var engineTableData = [
   {"longdesc":"11\" bore x 12\" stroke", "supdata":"<b>Simple exp.<\/b><br>1 cyl.<br>Prim. engine", "firstbuilt":"1870", "lastbuilt":"1870", "unitsbuilt":"1", "primengdwg":"", "assodwgs":"", "imgs":"", "usedby":"<span title=\"header=[] body=[<b>#3p Seven Brothers (1870)<br>Fishing Steamer built for Church Brothers; designed by NGH; LOA&nbsp;65ft&nbsp;0in<\/b><img src='..\/Images_Vessels\/w250px\/P00003_Seven_Brothers.jpg'>] \"><a href=\"..\/Docs\/P00003_Seven_Brothers.htm\">#3p<\/a><\/span> Seven Brothers", "collection1":"", "note":"\"A plan for this engine is in the collection of the Herreshoff Marine Museum.\" (Source: van der Linde, Claas. January 23, 2025.)", "uei":"1Exp_12000Stroke_11000H_Prim"},
   {"longdesc":"4 3\/4\" bore x 9\" stroke", "supdata":"<b>Simple exp.<\/b><br>1 cyl.<br>Prim. engine", "firstbuilt":"1870", "lastbuilt":"1875", "unitsbuilt":"2", "primengdwg":"", "assodwgs":"", "imgs":"", "usedby":"<span title=\"header=[] body=[<b>#4p Anemone (1870)<br>Open Steam Yacht built for J. B. Herreshoff; designed by NGH; LOA&nbsp;38ft<\/b>] \"><a href=\"..\/Docs\/P00004_Anemone.htm\">#4p<\/a><\/span> Anemone, <span title=\"header=[] body=[<b>#17p Flech\u00E9 {Fleche} (1875)<br>Open Steam Yacht built for Virgil Price {?}; designed by NGH; LOA&nbsp;42ft&nbsp;0in<\/b>] \"><a href=\"..\/Docs\/P00017_Fleche.htm\">#17p<\/a><\/span> Flech\u00E9", "collection1":"", "note":"\"No plans or pattern descriptions for this engine appear to have survived.\" (Source: van der Linde, Claas. July 31, 2021.)", "uei":"1Exp_09000Stroke_04750H_Prim"},
   {"longdesc":"12\" bore x 16\" stroke", "supdata":"<b>Simple exp.<\/b><br>1 cyl.<br>Prim. engine", "firstbuilt":"1871", "lastbuilt":"1872", "unitsbuilt":"2", "primengdwg":"", "assodwgs":"", "imgs":"", "usedby":"<span title=\"header=[] body=[<b>#6p Ospray {Osprey} (1871)<br>Fishing Steamer built for Bristol Steam Fishing Company (Herreshoff) {?}; designed by NGH; LOA&nbsp;72ft&nbsp;6in<\/b>] \"><a href=\"..\/Docs\/P00006_Osprey_Ospray.htm\">#6p<\/a><\/span> Osprey, <span title=\"header=[] body=[<b>#9p King Fisher {Kingfisher} (1872)<br>Fishing Steamer built for Bristol Steam Fishing Company (Herreshoff) {?}; designed by NGH; LOA&nbsp;72ft&nbsp;6in<\/b>] \"><a href=\"..\/Docs\/P00009_King_Fisher.htm\">#9p<\/a><\/span> King Fisher", "collection1":"", "note":"\"No plans or pattern descriptions for this engine appear to have survived.\" (Source: van der Linde, Claas. July 31, 2021.)", "uei":"1Exp_16000Stroke_12000H_Prim"},
   {"longdesc":"5 1\/2\" bore x 7\" stroke", "supdata":"<b>Simple exp.<\/b><br>1 cyl.<br>Prim. engine<br>10h.p.<br>Price $1250", "firstbuilt":"1871", "lastbuilt":"1871", "unitsbuilt":"2", "primengdwg":"", "assodwgs":"", "imgs":"", "usedby":"<span title=\"header=[] body=[<b>#7p Julia (1871)<br>Steam Yacht built for Frank Burtch; designed by NGH; LOA&nbsp;42ft&nbsp;0in<\/b>] \"><a href=\"..\/Docs\/P00007_Julia.htm\">#7p<\/a><\/span> Julia, <span title=\"header=[] body=[<b>#8p Actinia (1871)<br>Open Steam Yacht built for Alexander Agassiz; designed by NGH; LOA&nbsp;42ft<\/b>] \"><a href=\"..\/Docs\/P00008_Actinia.htm\">#8p<\/a><\/span> Actinia", "collection1":"", "note":"\"5 1\/2 x 7in [Cylinder Dia.]; 32in x 5ft [Boiler]; 10 [Horse Power]; 32lbs [Consumption of coal per hour]; 240 [Revolution of propeller per min.]; 3 x 6ft [Floor space of Boiler and Engine]; 5 3\/4ft [Height over all]; $1250 [Price of Machinery Including Propeller].\" (Source: Steam engine description in Brown, Charles G. (Herreshoff Agent, creator). \"The Herreshoff Steam Yachts and Yacht Machinery.\" Leaflet. Herreshoff Marine Museum Collection. HMM Library Rare Books Room (Box 1), Folder [no #]. No date (early 1870s ??).)\n\n\"No plans for this engine appear to have survived.\" (Source: van der Linde, Claas. July 31, 2021.)", "uei":"1Exp_07000Stroke_05500H_Prim"},
   {"longdesc":"3 1\/2\" bore x 7\" stroke", "supdata":"<b>Simple exp.<\/b><br>1 cyl.<br>Prim. engine<br>6 \/ 10h.p.<br>Price $800", "firstbuilt":"1873", "lastbuilt":"1884", "unitsbuilt":"24", "primengdwg":"", "assodwgs":"014-024, 014-027, 014-025, 014-026, 014-022, 014-023, 014-045", "imgs":"Eng_1Exp_07000Stroke_03500H_Prim_from_HDwg003-008_HH50015400_70p_Launch_for_USS_Essex.jpg, Eng_1Exp_07000Stroke_03500H_Prim_from_HDwg003-004_HH50015000_57p_Launch.jpg", "usedby":"<span title=\"header=[] body=[<b>#11p Fire Brand {Firebrand} (1873)<br>Open Steam Yacht; designed by NGH; LOA&nbsp;33ft&nbsp;0in<\/b>] \"><a href=\"..\/Docs\/P00011_Fire_Brand.htm\">#11p<\/a><\/span> Fire Brand, <span title=\"header=[] body=[<b>#12p Crest (1873)<br>Open Steam Yacht built for J. B. Herreshoff; designed by NGH; LOA&nbsp;30ft<\/b>] \"><a href=\"..\/Docs\/P00012_Crest.htm\">#12p<\/a><\/span> Crest, <span title=\"header=[] body=[<b>#14p Vision (1874)<br>Open Steam Yacht built for James Herreshoff; designed by NGH; LOA&nbsp;48ft&nbsp;0in<\/b>] \"><a href=\"..\/Docs\/P00014_Vision.htm\">#14p<\/a><\/span> Vision, <span title=\"header=[] body=[<b>#15p Gem (1875)<br>Open Steam Yacht built for George L{yman} Appleton; designed by NGH; LOA&nbsp;30ft&nbsp;0in<\/b>] \"><a href=\"..\/Docs\/P00015_Gem.htm\">#15p<\/a><\/span> Gem, <span title=\"header=[] body=[<b>#16p Spray (1875)<br>Open Steam Yacht built for Tilley Bros. & Eaton {Norfolk}; designed by NGH; LOA&nbsp;31ft&nbsp;8in<\/b>] \"><a href=\"..\/Docs\/P00016_Spray.htm\">#16p<\/a><\/span> Spray, <span title=\"header=[] body=[<b>#18p Spitfire {Spit Fire} (1875)<br>Open Steam Yacht built for {Savannah, GA Plantation Owner}; designed by NGH; LOA&nbsp;31ft&nbsp;8in<\/b>] \"><a href=\"..\/Docs\/P00018_Spit_Fire.htm\">#18p<\/a><\/span> Spit Fire, <span title=\"header=[] body=[<b>#19p Centennial (1876)<br>Steam Launch For Fishing; LOA&nbsp;23ft&nbsp;0in<\/b>] \"><a href=\"..\/Docs\/P00019_Centennial.htm\">#19p<\/a><\/span> Centennial, <span title=\"header=[] body=[<b>#21p {Open yacht machinery in middle} (1876)<br>Open Steam Yacht built for Lawrence; designed by NGH; LOA&nbsp;30ft<\/b>] \"><a href=\"..\/Docs\/P00021_Open_yacht.htm\">#21p<\/a><\/span> [Open yacht machinery in middle], <span title=\"header=[] body=[<b>#22p {Open yacht machinery in middle} (1876)<br>Open Steam Yacht built for E. A. Lawrence; designed by NGH; LOA&nbsp;33ft<\/b>] \"><a href=\"..\/Docs\/P00022_Open_yacht.htm\">#22p<\/a><\/span> [Open yacht machinery in middle], <span title=\"header=[] body=[<b>#23p Wasp (1876)<br>Steam Launch built for U.S. Coast Survey; LOA&nbsp;23ft&nbsp;0in<\/b>] \"><a href=\"..\/Docs\/P00023_Wasp.htm\">#23p<\/a><\/span> Wasp, <span title=\"header=[] body=[<b>#28p No. 5 (1876)<br>Steam Launch built for U.S. Coast Survey; LOA&nbsp;30ft&nbsp;0in<\/b>] \"><a href=\"..\/Docs\/P00028_No_5.htm\">#28p<\/a><\/span> No. 5, <span title=\"header=[] body=[<b>#29p Coquina (1877)<br>Open Steam Yacht built for William H. Graham {For use in Florida}; designed by NGH; LOA&nbsp;30ft&nbsp;0in<\/b>] \"><a href=\"..\/Docs\/P00029_Coquina.htm\">#29p<\/a><\/span> Coquina, <span title=\"header=[] body=[<b>#34p Eleanor (1877)<br>Open Steam Yacht built for  {Owner in Baltimore, MD}; designed by NGH; LOA&nbsp;30ft&nbsp;0in<\/b>] \"><a href=\"..\/Docs\/P00034_Eleanor.htm\">#34p<\/a><\/span> Eleanor, <span title=\"header=[] body=[<b>#36p {Open steam yacht} (1878)<br>Open Steam Yacht built for Dr. Howell; designed by NGH; LOA&nbsp;35ft<\/b>] \"><a href=\"..\/Docs\/P00036_Open_yacht.htm\">#36p<\/a><\/span> [Open steam yacht], <span title=\"header=[] body=[<b>#38p Puck (1878)<br>Open Steam Yacht built for Ernest Edwards; designed by NGH; LOA&nbsp;45ft&nbsp;0in<\/b>] \"><a href=\"..\/Docs\/P00038_Puck.htm\">#38p<\/a><\/span> Puck, <span title=\"header=[] body=[<b>#37p Waif (1878)<br>Steam Launch built for A. E. Oatman; designed by NGH; LOA&nbsp;30ft&nbsp;0in<\/b><img src='..\/Images_Vessels\/w250px\/P00037_Waif.jpg'>] \"><a href=\"..\/Docs\/P00037_Waif.htm\">#37p<\/a><\/span> Waif, <span title=\"header=[] body=[<b>#57p {Launch for N. Y. Coast Survey} (1879)<br>Steam Launch built for U.S. Coast Survey; designed by NGH; LOA&nbsp;24ft<\/b>] \"><a href=\"..\/Docs\/P00057_Launch_for_N_Y_Coast_Survey.htm\">#57p<\/a><\/span> [Launch for N. Y. Coast Survey], <span title=\"header=[] body=[<b>#58p {Launch for N. Y. Coast Survey} (1879)<br>Steam Launch built for U.S. Coast Survey; designed by NGH; LOA&nbsp;24ft<\/b>] \"><a href=\"..\/Docs\/P00058_Launch_for_N_Y_Coast_Survey.htm\">#58p<\/a><\/span> [Launch for N. Y. Coast Survey], <span title=\"header=[] body=[<b>#61p Waterwitch (1879)<br>Steam Launch built for Earle & Flint, C. T. & Charles R.; designed by NGH; LOA&nbsp;24ft<\/b>] \"><a href=\"..\/Docs\/P00061_Waterwitch.htm\">#61p<\/a><\/span> Waterwitch, <span title=\"header=[] body=[<b>#66p Kauplius {Nauplius} (1880)<br>Steam Launch built for Johns Hopkins University (Prof. Brooks); designed by NGH; LOA&nbsp;24ft<\/b>] \"><a href=\"..\/Docs\/P00066_Kauplius.htm\">#66p<\/a><\/span> Kauplius, <span title=\"header=[] body=[<b>#68p Fish Hawk Jr. {Launch for U.S.S. Fish Hawk} (1880)<br>Steam Launch built for U.S. Fish Commission {Capt. Zera Luther Tanner}; designed by NGH; LOA&nbsp;24ft<\/b><img src='..\/Images_Vessels\/w250px\/P00068_Probably_Fish_Hawk_Jr_Detail.jpg'>] \"><a href=\"..\/Docs\/P00068_Fish_Hawk_Jr.htm\">#68p<\/a><\/span> Fish Hawk Jr., <span title=\"header=[] body=[<b>#70p {Launch for U.S.S. Essex} (1880)<br>Steam Launch built for U.S. Navy; designed by NGH; LOA&nbsp;26ft<\/b><img src='..\/Images_Vessels\/w250px\/P00070_Launch_for_USS_Essex_by_Kathy_Bray.gif'>] \"><a href=\"..\/Docs\/P00070_Launch_for_USS_Essex.htm\">#70p<\/a><\/span> [Launch for U.S.S. Essex], <span title=\"header=[] body=[<b>#108p Thetis {Greely Relief Expedition} (1884)<br>Steam Whale Boat built for Greely relief expedition; designed by NGH; LOA&nbsp;28ft&nbsp;2in<\/b>] \"><a href=\"..\/Docs\/P00108_Whale_boat_for_Greely.htm\">#108p<\/a><\/span> Thetis [Greely relief expedition], <span title=\"header=[] body=[<b>#109p Cub {Greely Relief Expedition} (1884)<br>Steam Whale Boat built for Greely relief expedition; designed by NGH; LOA&nbsp;28ft&nbsp;2in<\/b>] \"><a href=\"..\/Docs\/P00109_Whale_boat_for_Greely.htm\">#109p<\/a><\/span> Cub [Greely relief expedition]", "collection1":"", "note":"\"3 1\/2 x 7in [Cylinder Dia.]; 2ft x 4 1\/4 [Boiler]; 6 [Horse Power]; 22lbs [Consumption of coal per hour]; 275 [Revolution of propeller per min.]; 2 1\/4 x 3 1\/2ft [Floor space of Boiler and Engine]; 4 3\/4ft [Height over all]; $800 [Price of Machinery Including Propeller].\" (Source: Steam engine description in Brown, Charles G. (Herreshoff Agent, creator). \"The Herreshoff Steam Yachts and Yacht Machinery.\" Leaflet. Herreshoff Marine Museum Collection. HMM Library Rare Books Room (Box 1), Folder [no #]. No date (early 1870s ??).)\n\n\"Diameter of Cylinder 3.5in.; Stroke 7in.; Max. Rev. per Min. 343; Max. Steam Pres. per Sq. Inch. 140lbs.; Max. Horse Power 10. [Fitted] with feed pumps, with or without air pumps and regulators. Complete brass casing for cylinders.\" (Source: Herreshoff Manufacturing Co. (creator). Data from 'Descriptive List of Plain, Single & Double Engines, for Portable, Stationary or Marine Use' on Printed Advertising Leaflet titled 'Herreshoff Manufacturing Company, Bristol, R.I. Sole Manufacturers of the Patent Safety Coil Boiler, Builders of Steam Vessels, Yachts, Launches, Portable, Stationary and Marine Engines, Pumps, Propeller Wheels and Safety Valves'. Herreshoff Marine Museum Collection, Acc. no. 86.228A. HMM Library Rare Books Room (Box 1), Folder [no #]. No date, ca1879??.)\n\n\"A 'Herreshoff 3 1\/2 x 7 slide valve steam engine' was listed in the 1924 auction catalog when HMCo was auctioned off.\" (Source: van der Linde, Claas. July 31, 2021.)", "uei":"1Exp_07000Stroke_03500H_Prim"},
   {"longdesc":"14\" bore x 16\" stroke", "supdata":"<b>Simple exp.<\/b><br>1 cyl.<br>Prim. engine", "firstbuilt":"1874", "lastbuilt":"1874", "unitsbuilt":"1", "primengdwg":"", "assodwgs":"", "imgs":"", "usedby":"<span title=\"header=[] body=[<b>#13p William Spicer (1874)<br>Fishing Steamer built for Bristol Steam Fishing Company (Herreshoff) {?}; designed by JBH?; LOA&nbsp;78ft<\/b>] \"><a href=\"..\/Docs\/P00013_William_Spicer.htm\">#13p<\/a><\/span> William Spicer", "collection1":"", "note":"\"No plans or pattern descriptions for this engine appear to have survived. This engine appears to have been Herreshoff-designed but built by Bawoon & Hittinger of Cambridgeport.\" (Source: van der Linde, Claas. July 31, 2021.)", "uei":"1Exp_16000Stroke_14000H_Prim"},
   {"longdesc":"2x3 1\/2\" bore x 7\" stroke", "supdata":"<b>Simple exp.<\/b><br>2 cyl.<br>Prim. engine<br>20h.p.", "firstbuilt":"1876", "lastbuilt":"1878", "unitsbuilt":"3", "primengdwg":"", "assodwgs":"014-021", "imgs":"", "usedby":"<span title=\"header=[] body=[<b>#187604ep Speedwell (1876)<br>Steamer built for Walter Langdon; LOA&nbsp;45ft<\/b>] \"><a href=\"..\/Docs\/EP187604_Speedwell.htm\">#187604ep<\/a><\/span> Speedwell, <span title=\"header=[] body=[<b>#32p {Open yacht} (1877)<br>Open Steam Yacht; designed by NGH; LOA&nbsp;45ft<\/b>] \"><a href=\"..\/Docs\/P00032_Open_yacht.htm\">#32p<\/a><\/span> [Open yacht], <span title=\"header=[] body=[<b>#43p Kelpie (1878)<br>Steam Launch built for William H. Graham; designed by NGH; LOA&nbsp;47ft&nbsp;0in<\/b><img src='..\/Images_Vessels\/w250px\/P00043_Kelpie.jpg'>] \"><a href=\"..\/Docs\/P00043_Kelpie.htm\">#43p<\/a><\/span> Kelpie", "collection1":"", "note":"\"Diameter of Cylinder 3.5in.; Stroke 7in.; Max. Rev. per Min. 343; Max. Steam Pres. per Sq. Inch. 140lbs.; Max. Horse Power 10 [sic, i.e. 20h.p. because this was a 'double engine' said on the same leaflet as having twice the horsepower of a regular engine]. [Fitted] with feed pumps, with or without air pumps and regulators. Complete brass casing for cylinders.\" (Source: Herreshoff Manufacturing Co. (creator). Data from 'Descriptive List of Plain, Single & Double Engines, for Portable, Stationary or Marine Use' on Printed Advertising Leaflet titled 'Herreshoff Manufacturing Company, Bristol, R.I. Sole Manufacturers of the Patent Safety Coil Boiler, Builders of Steam Vessels, Yachts, Launches, Portable, Stationary and Marine Engines, Pumps, Propeller Wheels and Safety Valves'. Herreshoff Marine Museum Collection, Acc. no. 86.228A. HMM Library Rare Books Room (Box 1), Folder [no #]. No date, ca1879??.)\n\n\"10 H. P. Ind[icated].\" (Source: Olsen's American Yacht List, s. v. #1453 Speedwell. New York, 1885.)\n\n\"This engine was a 'double engine' and consisted basically of two single-cylinder high pressure engines running in tandem and driving the same propeller shaft.  NGH employed double engines only between 1876 and 1880. Their advantage may have been a more compact form factor compared to a single high-pressure engine of much larger stroke and cylinder diameter and the capability to self-start in all positions. Double engines were quickly superceded by two-cylinder compound engines and, eventually, three cylinder triple engines which also offered these advantages in addition to much better efficiency and a better power-per-weight performance.\" (Source: van der Linde, Claas. November 12, 2018.)", "uei":"1Exp_07000Stroke_03500H03500H_Prim"},
   {"longdesc":"2x5\" bore x 10\" stroke", "supdata":"<b>Simple exp.<\/b><br>2 cyl.<br>Prim. engine<br>44h.p.<br>1040lbs", "firstbuilt":"1876", "lastbuilt":"1878", "unitsbuilt":"2", "primengdwg":"", "assodwgs":"", "imgs":"Eng_1Exp_10000Stroke_05000H05000H_Prim_from_US_Navy_Report_1876_a.jpg, Eng_1Exp_10000Stroke_05000H05000H_Prim_from_US_Navy_Report_1876_b.jpg, Eng_1Exp_10000Stroke_05000H05000H_Prim_from_US_Navy_Report_1876_c.jpg", "usedby":"<span title=\"header=[] body=[<b>#20p Lightning (1876)<br>Navy Steam Torpedo Boat built for U.S. Navy; designed by NGH; LOA&nbsp;58ft&nbsp;0in<\/b><img src='..\/Images_Vessels\/w250px\/P00020_Lightning.jpg'>] \"><a href=\"..\/Docs\/P00020_Lightning.htm\">#20p<\/a><\/span> Lightning, <span title=\"header=[] body=[<b>#41p Kittatinny (1878)<br>Passenger Steam Boat Sidewheel built for John Davis & Horatio Brodhead; designed by NGH; LOA&nbsp;60ft&nbsp;0in<\/b><img src='..\/Images_Vessels\/w250px\/P00041_Kittatinny_HMM.jpg'>] \"><a href=\"..\/Docs\/P00041_Kittatinny.htm\">#41p<\/a><\/span> Kittatinny", "collection1":"", "note":"\"Engine. --- Double, direct acting; cylinders, 5 inches diameter, 10 inches stroke; fitted with Herreshoff's patent cut-off valves; shaft, rods, studs, and bolts of Ulster iron; pins and keys of steel; weight, 1,040 pounds.\" (Source: U.S. Secretary of the Nayy. Report of the Secretary of the United States Navy. Washington, 1876, p. 140.)\n\n\"Diameter of Cylinder 5in.; Stroke 10in.; Max. Rev. per Min. 277; Max. Steam Pres. per Sq. Inch. 135lbs.; Max. Horse Power 22 [sic, i.e. 24h.p. because this was a 'double engine' said on the same leaflet as having twice the horsepower of a regular engine]. [Fitted] with feed pumps, with or without air pumps and regulators. Complete brass casing for cylinders.\" (Source: Herreshoff Manufacturing Co. (creator). Data from 'Descriptive List of Plain, Single & Double Engines, for Portable, Stationary or Marine Use' on Printed Advertising Leaflet titled 'Herreshoff Manufacturing Company, Bristol, R.I. Sole Manufacturers of the Patent Safety Coil Boiler, Builders of Steam Vessels, Yachts, Launches, Portable, Stationary and Marine Engines, Pumps, Propeller Wheels and Safety Valves'. Herreshoff Marine Museum Collection, Acc. no. 86.228A. HMM Library Rare Books Room (Box 1), Folder [no #]. No date, ca1879??.)\n\n\"This engine was possibly the first Herreshoff-built 'double engine' (another, less likely, possibility is that the 2x3 1\/2\" bore x 7\" stroke engine for #187604ep Speedwell was first). A double engine consisted basically of two single-cylinder high pressure engines running in tandem and driving the same propeller shaft.  NGH employed double engines only between 1876 and 1880. Their advantage may have been a more compact form factor compared to a single high-pressure engine of much larger stroke and cylinder diameter and the capability to self-start in all positions. Double engines were quickly superceded by two-cylinder compound engines and, eventually, three cylinder triple engines which also offered these advantages in addition to much better efficiency and a better power-per-weight performance.\" (Source: van der Linde, Claas. November 12, 2018.)", "uei":"1Exp_10000Stroke_05000H05000H_Prim"},
   {"longdesc":"2 1\/2\" bore x 5\" stroke", "supdata":"<b>Simple exp.<\/b><br>1 cyl.<br>Prim. engine<br>4.5h.p.", "firstbuilt":"1876", "lastbuilt":"1894", "unitsbuilt":"13", "primengdwg":"", "assodwgs":"012-002, 012-001, 012-006, 012-005, 012-003, 012-008, 012-021, 012-007, 012-010, 012-022, 012-017, 012-020", "imgs":"Eng_1Exp_05000Stroke_02500H_Prim_1880s_ca_HMCo_Photo_HMCo_Photobox_Bray_Collection_crop.jpg, Eng_1Exp_05000Stroke_02500H_Prim_1880s_ca_HMCo_Photo_HMCo_Photobox_Bray_Collection.jpg, Eng_1Exp_05000Stroke_02500H_Prim_from_HDwg002-002_HH50000200_158p_Launch_for_shad_fishing_a.jpg, Eng_1Exp_05000Stroke_02500H_Prim_from_HDwg002-002_HH50000200_158p_Launch_for_shad_fishing_b.jpg, Eng_1Exp_05000Stroke_02500H_Prim_HMM_TR222_2015_08_Redds_Pond_Boatworks_Photo.jpg, Eng_1Exp_05000Stroke_02500H_Prim_HMM_TR222_2015_11_Redds_Pond_Boatworks_Photo.jpg, Eng_1Exp_05000Stroke_02500H_Prim_HMM_TR222_Builders_Plate_HMM_Photo.jpg, Eng_1Exp_05000Stroke_02500H_Prim_MIT_1962_03_Steamboats_and_Modern_Steam_Launches_p33_a.jpg, Eng_1Exp_05000Stroke_02500H_Prim_MIT_1962_03_Steamboats_and_Modern_Steam_Launches_p33_b.jpg, Eng_1Exp_05000Stroke_02500H_Prim_MIT_1980s_or_earlier_or_later.jpg, Eng_1Exp_05000Stroke_02500H_Prim_MIT_2018_10_18_van_der_Linde_Photo_a.jpg, Eng_1Exp_05000Stroke_02500H_Prim_MIT_2018_10_18_van_der_Linde_Photo_b.jpg, Eng_1Exp_05000Stroke_02500H_Prim_R_Gross_2014_09_13_a.jpg, Eng_1Exp_05000Stroke_02500H_Prim_R_Gross_2014_09_13_b.jpg, Eng_1Exp_05000Stroke_02500H_Prim_R_Gross_2014_09_13_c.jpg, Eng_1Exp_05000Stroke_02500H_Prim_R_Gross_2014_09_13_d.jpg", "usedby":"<span title=\"header=[] body=[<b>#24p {Cutter for NY Bureau of Ordnance} (1876)<br>Steam Cutter built for U.S. N.Y. Bureau of Ordnance; designed by NGH; LOA&nbsp;22ft<\/b>] \"><a href=\"..\/Docs\/P00024_Cutter.htm\">#24p<\/a><\/span> [Cutter for NY Bureau of Ordnance], <span title=\"header=[] body=[<b>#27p {Tender for N.Y. Coast Survey built in N.Y.} (1876)<br>Steam Launch built for U.S. Coast Survey; LOA&nbsp;23ft<\/b>] \"><a href=\"..\/Docs\/P00027_Tender_NY_Coast_Survey_built_in_NY.htm\">#27p<\/a><\/span> [Tender for N.Y. Coast Survey built in N.Y.], <span title=\"header=[] body=[<b>#33p {Tender for Sch. Y. Palmer} (1877)<br>Steam Launch; designed by NGH; LOA&nbsp;24ft&nbsp;6in<\/b><img src='..\/Images_Vessels\/w250px\/P00033_Yacht_Tender_a.jpg'>] \"><a href=\"..\/Docs\/P00033_Yachts_tender.htm\">#33p<\/a><\/span> [Yacht tender], <span title=\"header=[] body=[<b>#42p {Launch for #39p Clara} (1878)<br>Steam Launch built for Spanish Naval Commission; designed by NGH; LOA&nbsp;23ft<\/b>] \"><a href=\"..\/Docs\/P00042_Steam_Launch.htm\">#42p<\/a><\/span> [Launch for <span title=\"header=[] body=[<b>#39p Clara (1878)<br>Steam Gunboat built for Spanish Naval Commission; designed by NGH; LOA&nbsp;140ft&nbsp;0in<\/b><img src='..\/Images_Vessels\/w250px\/P00039_Clara.jpg'>] \"><a href=\"..\/Docs\/P00039_Clara.htm\">#39p<\/a><\/span> Clara], <span title=\"header=[] body=[<b>#51p {Launch for St. Y. Lurline} (1879)<br>Steam Launch built for Phillips Phoenix {?}; designed by NGH; LOA&nbsp;17ft<\/b>] \"><a href=\"..\/Docs\/P00051_Launch_for_St_Y_Lurline.htm\">#51p<\/a><\/span> [Launch for St. Y. Lurline], <span title=\"header=[] body=[<b>#84p {Launch for St. Y. Pastime} (1881)<br>Steam Launch built for K. C. Walker {?}; designed by NGH; LOA&nbsp;17ft<\/b>] \"><a href=\"..\/Docs\/P00084_Launch_for_St_Y_Pastime.htm\">#84p<\/a><\/span> [Launch for St. Y. Pastime], <span title=\"header=[] body=[<b>#93p Maud {Launch for #88p Siesta} (1882, Extant)<br>Steam Launch built for H{ulbert} H. Warner; designed by NGH; LOA&nbsp;20ft<\/b><img src='..\/Images_Vessels\/w250px\/P00093_Maud_by_Kathy_Bray.gif'>] \"><a href=\"..\/Docs\/P00093_Maud.htm\">#93p<\/a><\/span> Maud [Launch for <span title=\"header=[] body=[<b>#88p Siesta (1882)<br>Steam Yacht built for H{ulbert} H. Warner; designed by NGH; LOA&nbsp;98ft<\/b><img src='..\/Images_Vessels\/w250px\/P00088_Siesta.jpg'>] \"><a href=\"..\/Docs\/P00088_Siesta.htm\">#88p<\/a><\/span> Siesta], <span title=\"header=[] body=[<b>#121p Duck {Launch for Schr. Y. Gitana} (1885)<br>Steam Launch built for William F. Weld; LOA&nbsp;20ft<\/b>] \"><a href=\"..\/Docs\/P00121_Launch_for_schooner_yacht_Gitana.htm\">#121p<\/a><\/span> Duck, <span title=\"header=[] body=[<b>#137p {Machinery for R. Y. Bruce} (1886)<br>Steam Engine Only built for R. Y. Bruce<\/b>] \"><a href=\"..\/Docs\/P00137_Machinery_for_R_Y_Bruce.htm\">#137p<\/a><\/span> [Machinery for R. Y. Bruce], <span title=\"header=[] body=[<b>#158p {Launch for Seal Fishing} (1889)<br>Steam Launch built for N\/A {owner in San Francisco}; designed by NGH; LOA&nbsp;23ft<\/b>] \"><a href=\"..\/Docs\/P00158_Launch_for_shad_fishing_San_Francisco.htm\">#158p<\/a><\/span> [Launch for shad fishing San Francisco], <span title=\"header=[] body=[<b>#159p {Machinery only for Launch for Seal Fishing} (1889)<br>Steam Engine Only built for N\/A {owner in San Francisco}<\/b>] \"><a href=\"..\/Docs\/P00159_Machinery_only.htm\">#159p<\/a><\/span> [Machinery only for same as <span title=\"header=[] body=[<b>#158p {Launch for Seal Fishing} (1889)<br>Steam Launch built for N\/A {owner in San Francisco}; designed by NGH; LOA&nbsp;23ft<\/b>] \"><a href=\"..\/Docs\/P00158_Launch_for_shad_fishing_San_Francisco.htm\">#158p<\/a><\/span>], <span title=\"header=[] body=[<b>#160p {Machinery only for Launch for Seal Fishing} (1889)<br>Steam Engine Only built for N\/A {owner in San Francisco}<\/b>] \"><a href=\"..\/Docs\/P00160_Machinery_only.htm\">#160p<\/a><\/span> [Machinery only for same as <span title=\"header=[] body=[<b>#158p {Launch for Seal Fishing} (1889)<br>Steam Launch built for N\/A {owner in San Francisco}; designed by NGH; LOA&nbsp;23ft<\/b>] \"><a href=\"..\/Docs\/P00158_Launch_for_shad_fishing_San_Francisco.htm\">#158p<\/a><\/span>], <span title=\"header=[] body=[<b>#180p {Launch for St. Y. Thespia} (1894)<br>Steam Launch built for  {George or C. B. Greene?}; designed by NGH; LOA&nbsp;18ft<\/b>] \"><a href=\"..\/Docs\/P00180_Launch.htm\">#180p<\/a><\/span> [Launch for St. Y. Thespia]", "collection1":"Three engines:\n1) Herreshoff Marine Museum (acc. no. TR222, originally for #93p Maud, formerly owned by B. McClung in Canada, then by Ulf Heide, owner of reduced-size #94p replica Dragon, built at Redd Pond Boatworks and launched in 2017 and subsequently donated to H.M.M.)\n2) M.I.T Museum (formerly owned by Spalding Dunbar).\n3) Private owner, U.S.A.\nReplicas are being built by Pearl Steam Engine Company (Zenith engine) and a builder in England.", "note":"\"Diameter of Cylinder 2.5in.; Stroke 5in.; Max. Rev. per Min. 420; Max. Steam Pres. per Sq. Inch. 145lbs.; Max. Horse Power 4.5. [Fitted] with feed pumps, with or without air pumps and regulators. Complete brass casing for cylinders.\" (Source: Herreshoff Manufacturing Co. (creator). Data from 'Descriptive List of Plain, Single & Double Engines, for Portable, Stationary or Marine Use' on Printed Advertising Leaflet titled 'Herreshoff Manufacturing Company, Bristol, R.I. Sole Manufacturers of the Patent Safety Coil Boiler, Builders of Steam Vessels, Yachts, Launches, Portable, Stationary and Marine Engines, Pumps, Propeller Wheels and Safety Valves'. Herreshoff Marine Museum Collection, Acc. no. 86.228A. HMM Library Rare Books Room (Box 1), Folder [no #]. No date, ca1879??.)\n\n\"[About the engine once owned by Barrie McClung, now at HMM:] Hand engraved on the cylinder head was 'Herreshoff Manufacturing Co., Bristol, R.I. #93, 1882.' ... Although the block is cast of the finest grey iron, the lagging is polished brass --- a lovely contrast with the bronze. This engine is 2 1\/2in x 5in with a slide valve, Stephenson link, cross-head feed pump, and overhung crank. It was originally sold by Fleming Machine Co., Ottawa, Canada [A plate, now apparently missing, with this name was affixed to the engine's frame]. My research found that it powered a 26' pleasure launch on the Ottawa River to the end of the depression when it was removed from the hull and used as stationary power for a cord-wood mill for several years. The engine was found under an immigrant farmer's workbench by an Airforce radio technician and purchased by him in 1965 and followed him through many transfers until retirement in Victoria in 1971. [Image Captions:] [a:] Herreshoff crosshead driven feed pump, displacement type. Beautiful casting. [b:] Jewelry showing eccentric straps, feed pump, Stephenson link, valve chest cover and cylinder head hand engraved, 'Herreshoff Mfg. Co., Bristol, R.I., #93, 1882.' [c:] Sole, engine bed and engine base of polished cast bronze of Herreshoff engine #93 showing overhung, balanced crankshaft, crosshead feedwater pump, valve eccentrics, etc. [d:] Main frame of engine with plate affixed reading: 'Supplied by: Fleming Machine Co., 10 Sparks St., Ottawa, Canada. Serial number 4'.\" (Source: McClung, Barrie. [Title?] Steamboater's Handbook VI, 1996, p. II-39-20 and II-39-21. Text written apparently ca. 1990 or slightly earlier.)\n\n\"The privately owned engine is engraved on its steam chest cover: Herreshoff Mfg. Co.; Bristol, R.I., U.S.A.\" (Source: van der Linde, Claas. July 27, 2022.)", "uei":"1Exp_05000Stroke_02500H_Prim"},
   {"longdesc":"8\" bore x 12\" stroke", "supdata":"<b>Simple exp.<\/b><br>1 cyl.<br>Prim. engine<br>50h.p.", "firstbuilt":"1876", "lastbuilt":"1878", "unitsbuilt":"2", "primengdwg":"", "assodwgs":"", "imgs":"", "usedby":"<span title=\"header=[] body=[<b>#25p Viola (1876)<br>Steam Yacht built for J. B. Herreshoff {sold to Virgil Price}; designed by NGH; LOA&nbsp;50ft&nbsp;0in<\/b>] \"><a href=\"..\/Docs\/P00025_Viola.htm\">#25p<\/a><\/span> Viola, <span title=\"header=[] body=[<b>#46p Ogeechee (1878)<br>Steam Tug built for George L{yman} Appleton {Truck and Towing?}; designed by NGH; LOA&nbsp;50ft<\/b><img src='..\/Images_Vessels\/w250px\/P00046_Ogeechee.jpg'>] \"><a href=\"..\/Docs\/P00046_Ogeechee.htm\">#46p<\/a><\/span> Ogeechee", "collection1":"", "note":"\"Diameter of Cylinder 8in.; Stroke 12in.; Max. Rev. per Min. 230; Max. Steam Pres. per Sq. Inch. 130lbs.; Max. Horse Power 50. [Fitted] with feed pumps, with or without air pumps and regulators. Complete brass casing for cylinders. [Furnished] with variable cut-off valve.\" (Source: Herreshoff Manufacturing Co. (creator). Data from 'Descriptive List of Plain, Single & Double Engines, for Portable, Stationary or Marine Use' on Printed Advertising Leaflet titled 'Herreshoff Manufacturing Company, Bristol, R.I. Sole Manufacturers of the Patent Safety Coil Boiler, Builders of Steam Vessels, Yachts, Launches, Portable, Stationary and Marine Engines, Pumps, Propeller Wheels and Safety Valves'. Herreshoff Marine Museum Collection, Acc. no. 86.228A. HMM Library Rare Books Room (Box 1), Folder [no #]. No date, ca1879??.)\n\n\"No plans for this engine appear to have survived. But note that two double pages (49-50) are dedicated to this engine in the book of steam engine casting patterns in the Hart Nautical Collections HH.6.120 and a number of pattern descriptions have survived.\" (Source: van der Linde, Claas. July 31, 2021.)", "uei":"1Exp_12000Stroke_08000H_Prim"},
   {"longdesc":"5\" bore x 10\" stroke", "supdata":"<b>Simple exp.<\/b><br>1 cyl.<br>Prim. engine<br>22h.p.", "firstbuilt":"1877", "lastbuilt":"1877", "unitsbuilt":"2", "primengdwg":"", "assodwgs":"016-003, 022-002, 023-002", "imgs":"Eng_1Exp_10000Stroke_05000H_Prim_1880s_ca_HMCo_Photo_HMCo_Photobox_Bray_Collection_crop.jpg, Eng_1Exp_10000Stroke_05000H_Prim_1880s_ca_HMCo_Photo_HMCo_Photobox_Bray_Collection.jpg", "usedby":"<span title=\"header=[] body=[<b>#30p Kanawa (1877)<br>Steam Launch Sidewheel built for U.S. Army; designed by NGH; LOA&nbsp;45ft&nbsp;0in<\/b>] \"><a href=\"..\/Docs\/P00030_Kanawa.htm\">#30p<\/a><\/span> Kanawa, <span title=\"header=[] body=[<b>#31p {Francesca?} (1877)<br>Open Steam Yacht built for Frank Birch {? Ultimately an owner in Buenos Ayres}; designed by NGH; LOA&nbsp;47ft<\/b>] \"><a href=\"..\/Docs\/P00031_Open_yacht.htm\">#31p<\/a><\/span> [River Steamer]", "collection1":"", "note":"\"Diameter of Cylinder 5in.; Stroke 10in.; Max. Rev. per Min. 277; Max. Steam Pres. per Sq. Inch. 135lbs.; Max. Horse Power 22. [Fitted] with feed pumps, with or without air pumps and regulators. Complete brass casing for cylinders.\" (Source: Herreshoff Manufacturing Co. (creator). Data from 'Descriptive List of Plain, Single & Double Engines, for Portable, Stationary or Marine Use' on Printed Advertising Leaflet titled 'Herreshoff Manufacturing Company, Bristol, R.I. Sole Manufacturers of the Patent Safety Coil Boiler, Builders of Steam Vessels, Yachts, Launches, Portable, Stationary and Marine Engines, Pumps, Propeller Wheels and Safety Valves'. Herreshoff Marine Museum Collection, Acc. no. 86.228A. HMM Library Rare Books Room (Box 1), Folder [no #]. No date, ca1879??.)\n\n\"Drawing MRDE11_02280 is titled '5x10in. April 1877' and shows another detail of this engine.\" (Source: van der Linde, Claas. October 27, 2021.)", "uei":"1Exp_10000Stroke_05000H_Prim"},
   {"longdesc":"12\" & 21\" bore x 24\" stroke", "supdata":"<b>Double exp.<\/b><br>2 cyl.<br>Prim. engine<br>274h.p.", "firstbuilt":"1877", "lastbuilt":"1878", "unitsbuilt":"2", "primengdwg":"", "assodwgs":"", "imgs":"", "usedby":"<span title=\"header=[] body=[<b>#35p Estelle (1877)<br>Steamboat built for Cuban Insurgents Government; designed by NGH; LOA&nbsp;120ft&nbsp;0in<\/b><img src='..\/Images_Vessels\/w250px\/P00035_Estelle_Bristol_Customhouse.jpg'>] \"><a href=\"..\/Docs\/P00035_Estelle.htm\">#35p<\/a><\/span> Estelle, <span title=\"header=[] body=[<b>#39p Clara (1878)<br>Steam Gunboat built for Spanish Naval Commission; designed by NGH; LOA&nbsp;140ft&nbsp;0in<\/b><img src='..\/Images_Vessels\/w250px\/P00039_Clara.jpg'>] \"><a href=\"..\/Docs\/P00039_Clara.htm\">#39p<\/a><\/span> Clara", "collection1":"", "note":"\"Diam. of High. Pres. Cyl. 12in.; Diam. of Low Pres. Cyl. 21in.; Stroke 24in.; Max. Rev. per Min. 164; Max. Steam Pres. per Sq. Inch. 120lbs.; Max. Horse Power 274. [Fitted] with feed and air pumps, with or without regulators. Brass casing to cylinders. [Has] variable cut-off valve.\" (Source: Herreshoff Manufacturing Co. (creator). Data from 'Descriptive List of Compound Condensing Engines for Stationary or Marine Use' on Printed Advertising Leaflet titled 'Herreshoff Manufacturing Company, Bristol, R.I. Sole Manufacturers of the Patent Safety Coil Boiler, Builders of Steam Vessels, Yachts, Launches, Portable, Stationary and Marine Engines, Pumps, Propeller Wheels and Safety Valves'. Herreshoff Marine Museum Collection, Acc. no. 86.228A. HMM Library Rare Books Room (Box 1), Folder [no #]. No date, ca1879??.)\n\n\"Apparently the first Hereshoff-designed double-expansion (compound) steam engine. No plans for this engine appear to have survived but a number of pattern descriptions are known. NGH designed this engine in 1877 for #35p Estelle. HMCo not having the capacity to build it itself, Estelle's engine was built by the Rhode Island Locomotive Company of Providence, RI. It appears that the second engine of this type, built in 1878 for #39p Clara, was built by HMCo itself. Thus, even though two of these engines were fitted to HMCo built vessels, only one of them was built by HMCo.\" (Source: van der Linde, Claas. July 31, 2021.)", "uei":"2Exp_24000Stroke_12000H21000L_Prim"},
   {"longdesc":"9\" & 16\" bore x 18\" stroke", "supdata":"<b>Double exp.<\/b><br>2 cyl.<br>Prim. engine<br>144h.p.", "firstbuilt":"1878", "lastbuilt":"1878", "unitsbuilt":"1", "primengdwg":"", "assodwgs":"054-005, 021-012, 021-021, 021-008, 021-025, 021-015, 021-003, 021-014, 021-018, 021-019, 021-020, 021-011, 021-024, 022-003, 021-009, 021-022, 021-005, 021-002, 021-004, 021-006, 021-013, 021-001, 021-007, 021-017, 021-023, 021-010, 021-016, 021-026, 021-037, 021-031 B, 021-034, 021-036, 021-041, 021-054, 021-048", "imgs":"Eng_2Exp_18000Stroke_09000H16000L_Prim_1898_07_Van_Nostrands_Engineering_Magazine_p630.jpg", "usedby":"<span title=\"header=[] body=[<b>#40p Leila (1878)<br>Steam Yacht built for William H. Graham; designed by NGH; LOA&nbsp;100ft&nbsp;0in<\/b><img src='..\/Images_Vessels\/w250px\/P00040_Leila.jpg'>] \"><a href=\"..\/Docs\/P00040_Leila.htm\">#40p<\/a><\/span> Leila", "collection1":"", "note":"\"Diam. of High. Pres. Cyl. 9in.; Diam. of Low Pres. Cyl. 16in.; Stroke 18in.; Max. Rev. per Min. 195; Max. Steam Pres. per Sq. Inch. 125lbs.; Max. Horse Power 144. [Fitted] with feed and air pumps, with or without regulators. Brass casing to cylinders. [Has] variable cut-off valve.\" (Source: Herreshoff Manufacturing Co. (creator). Data from 'Descriptive List of Compound Condensing Engines for Stationary or Marine Use' on Printed Advertising Leaflet titled 'Herreshoff Manufacturing Company, Bristol, R.I. Sole Manufacturers of the Patent Safety Coil Boiler, Builders of Steam Vessels, Yachts, Launches, Portable, Stationary and Marine Engines, Pumps, Propeller Wheels and Safety Valves'. Herreshoff Marine Museum Collection, Acc. no. 86.228A. HMM Library Rare Books Room (Box 1), Folder [no #]. No date, ca1879??.)\n\n\"This engine appears to have been the first compound engine built at HMCo --- notably in the same year that NGH joined the firm and it was incorporated. One double page (30) is dedicated to this engine in the book of steam engine casting patterns in the Hart Nautical Collections HH.6.120-02. A detailed report about this engine, including indicator diagrams, can be found in Isherwood, Benjamin Franklin. \"Report Made to the Bureau of Steam-Engineering, Navy Department, on the Hull, Engine, and Boiler of the Steam-Yacht 'Siesta,' constructed by the Herreshoff Manufacturing Company.\" Washington, March 3, 1883.\" (Source: van der Linde, Claas. July 21, 2021.)", "uei":"2Exp_18000Stroke_09000H16000L_Prim"},
   {"longdesc":"6\" & 10 1\/2\" bore x 10\" stroke", "supdata":"<b>Double exp.<\/b><br>2 cyl.<br>Prim. engine<br>54h.p.", "firstbuilt":"1878", "lastbuilt":"1905", "unitsbuilt":"17", "primengdwg":"", "assodwgs":"016-001, 016-002, 016-005, 016-006, 016-009, 016-007, 016-013, 016-014, 016-021, 016-020, 016-022, 016-025, 016-027, 016-023, 016-026, 016-024, 016-028, 016-016, 016-064, 016-000, 016-000, 016-068", "imgs":"Eng_2Exp_10000Stroke_06000H10500L_Prim_from_HDwg003-015_HH50015803_77p_Edith_a.jpg, Eng_2Exp_10000Stroke_06000H10500L_Prim_from_HDwg003-015_HH50015803_77p_Edith_b.jpg, Eng_2Exp_10000Stroke_06000H10500L_Prim_1879_04_05_Scientific_American_p210.jpg", "usedby":"<span title=\"header=[] body=[<b>#44p Herreshoff (1878)<br>Navy Steam Torpedo Boat built for George R. Dunell {for British Navy}; designed by NGH; LOA&nbsp;59ft<\/b><img src='..\/Images_Vessels\/w250px\/P00044_Herreshoff.jpg'>] \"><a href=\"..\/Docs\/P00044_Herreshoff.htm\">#44p<\/a><\/span> Herreshoff, <span title=\"header=[] body=[<b>#53p Republica (1879)<br>Navy Steam Torpedo Boat built for Peruvian Navy; designed by NGH; LOA&nbsp;59ft<\/b><img src='..\/Images_Vessels\/w250px\/P00053_Republica_Torpedo_Boat.jpg'>] \"><a href=\"..\/Docs\/P00053_Torpedo_Boat_for_Peru.htm\">#53p<\/a><\/span> Republica, <span title=\"header=[] body=[<b>#55p Alianza (1879)<br>Navy Steam Torpedo Boat built for Peruvian Navy; designed by NGH; LOA&nbsp;56ft<\/b><img src='..\/Images_Vessels\/w250px\/P00055_Alianza_Torpedo_Boat.jpg'>] \"><a href=\"..\/Docs\/P00055_Torpedo_Boat_for_Peru.htm\">#55p<\/a><\/span> Alianza, <span title=\"header=[] body=[<b>#60p {Torpedo Boat for Peru} (1879)<br>Navy Steam Torpedo Boat built for Peruvian Navy {not delivered}; designed by NGH; LOA&nbsp;56ft<\/b><img src='..\/Images_Vessels\/w250px\/P00060_Torpedo_Boat_for_Peru_with_torpedo.jpg'>] \"><a href=\"..\/Docs\/P00060_Torpedo_Boat_for_Peru.htm\">#60p<\/a><\/span> [Torpedo Boat for Peru], <span title=\"header=[] body=[<b>#76p Idle Hour (1881)<br>Steam Yacht built for B. J. Carver; designed by NGH; LOA&nbsp;60ft<\/b><img src='..\/Images_Vessels\/w250px\/P00076_Idle_Hour_Stebbins_14581.jpg'>] \"><a href=\"..\/Docs\/P00076_Idle_Hour.htm\">#76p<\/a><\/span> Idle Hour, <span title=\"header=[] body=[<b>#72p Camilla (1881)<br>Steam Yacht built for Dr. J. G. (Josiah Gilbert) Holland; designed by NGH; LOA&nbsp;60ft<\/b><img src='..\/Images_Vessels\/w250px\/P00072_Camilla.jpg'>] \"><a href=\"..\/Docs\/P00072_Camilla.htm\">#72p<\/a><\/span> Camilla, <span title=\"header=[] body=[<b>#77p Edith (1881)<br>Steam Yacht built for William Woodward Jr.; designed by NGH; LOA&nbsp;60ft&nbsp;0in<\/b><img src='..\/Images_Vessels\/w250px\/P00077_Edith_by_Kathy_Bray.gif'>] \"><a href=\"..\/Docs\/P00077_Edith.htm\">#77p<\/a><\/span> Edith, <span title=\"header=[] body=[<b>#79p Dido (1881)<br>Steam Yacht built for Robert Lenox Kennedy; designed by NGH; LOA&nbsp;60ft&nbsp;0in<\/b><img src='..\/Images_Vessels\/w250px\/P00079_Dido.jpg'>] \"><a href=\"..\/Docs\/P00079_Dido.htm\">#79p<\/a><\/span> Dido, <span title=\"header=[] body=[<b>#101p 101 (1883)<br>Steam Yacht built for Archibald Rogers {Percy R. Pyne, Jr.?}; designed by NGH; LOA&nbsp;68ft&nbsp;8in<\/b><img src='..\/Images_Vessels\/w250px\/P00101_101_Ossabaw_a.jpg'>] \"><a href=\"..\/Docs\/P00101_101.htm\">#101p<\/a><\/span> 101, <span title=\"header=[] body=[<b>#104p Magnolia (1883)<br>Steam Yacht built for Fairman Rogers; designed by NGH; LOA&nbsp;99ft&nbsp;0in<\/b><img src='..\/Images_Vessels\/w250px\/P00104_Magnolia_Stebbins_4522.jpg'>] \"><a href=\"..\/Docs\/P00104_Magnolia.htm\">#104p<\/a><\/span> Magnolia, <span title=\"header=[] body=[<b>#110p Lucile {Lucile I} (1884)<br>Steam Yacht built for Charles H. Kellogg; designed by NGH; LOA&nbsp;69ft&nbsp;8in<\/b>] \"><a href=\"..\/Docs\/P00110_Lucile_Lucille.htm\">#110p<\/a><\/span> Lucile, <span title=\"header=[] body=[<b>#120p Polly (1885)<br>Steam Yacht built for Gen. C. A. Whittier; designed by NGH; LOA&nbsp;68ft&nbsp;8in<\/b><img src='..\/Images_Vessels\/w250px\/P00120_Polly_Stebbins_3997.jpg'>] \"><a href=\"..\/Docs\/P00120_Polly.htm\">#120p<\/a><\/span> Polly, <span title=\"header=[] body=[<b>#146p Augusta {II} (1887)<br>Steam Yacht built for J. B. Herreshoff {I. L. Elwood}; designed by NGH; LOA&nbsp;90ft<\/b><img src='..\/Images_Vessels\/w250px\/P00146_Augusta_Stebbins_1916.jpg'>] \"><a href=\"..\/Docs\/P00146_Augusta.htm\">#146p<\/a><\/span> Augusta [II], <span title=\"header=[] body=[<b>#161p Reposo (1890)<br>Steam Yacht built for Bradford B. McGregor; designed by NGH; LOA&nbsp;67ft&nbsp;4in<\/b><img src='..\/Images_Vessels\/w250px\/P00161_Reposo_Bolles_371.jpg'>] \"><a href=\"..\/Docs\/P00161_Reposo.htm\">#161p<\/a><\/span> Reposo, <span title=\"header=[] body=[<b>#170p Tranquilo {Tranquillo} (1892)<br>Steam Yacht built for Herreshoff Mfg. Co Stock {S. B. Sexton}; designed by NGH; LOA&nbsp;88ft<\/b><img src='..\/Images_Vessels\/w250px\/P00170_Tranquillo_Johnston_479.jpg'>] \"><a href=\"..\/Docs\/P00170_Tranquillo_Tranquilo.htm\">#170p<\/a><\/span> Tranquilo, <span title=\"header=[] body=[<b>#247p Sea Urchin (1905)<br>Steam Yacht built for Robert M. Riddle; LOA&nbsp;61ft&nbsp;6in<\/b>] \"><a href=\"..\/Docs\/P00247_Sea_Urchin.htm\">#247p<\/a><\/span> Sea Urchin", "collection1":"", "note":"\"Diam. of High. Pres. Cyl. 6in.; Diam. of Low Pres. Cyl. 10.5in.; Stroke 10in.; Max. Rev. per Min. 277; Max. Steam Pres. per Sq. Inch. 135lbs.; Max. Horse Power 54. [Fitted] with feed and air pumps, with or without regulators. Brass casing to cylinders.\" (Source: Herreshoff Manufacturing Co. (creator). Data from 'Descriptive List of Compound Condensing Engines for Stationary or Marine Use' on Printed Advertising Leaflet titled 'Herreshoff Manufacturing Company, Bristol, R.I. Sole Manufacturers of the Patent Safety Coil Boiler, Builders of Steam Vessels, Yachts, Launches, Portable, Stationary and Marine Engines, Pumps, Propeller Wheels and Safety Valves'. Herreshoff Marine Museum Collection, Acc. no. 86.228A. HMM Library Rare Books Room (Box 1), Folder [no #]. No date, ca1879??.)", "uei":"2Exp_10000Stroke_06000H10500L_Prim"},
   {"longdesc":"2x2 1\/2\" bore x 5\" stroke", "supdata":"<b>Simple exp.<\/b><br>2 cyl.<br>Prim. engine<br>9h.p.", "firstbuilt":"1878", "lastbuilt":"1879", "unitsbuilt":"4", "primengdwg":"", "assodwgs":"012-002", "imgs":"Eng_1Exp_05000Stroke_02500H02500H_Prim_from_HDwg003-006_HH50015200_59p_Open_Yacht.jpg", "usedby":"<span title=\"header=[] body=[<b>#45p Ibis Jr. {Launch for St. Y. Ibis or Leila?} (1878)<br>Steam Launch built for J. F. Brown, Jr.; designed by NGH; LOA&nbsp;30ft<\/b><img src='..\/Images_Vessels\/w250px\/P00045_Ibis_Jr.jpg'>] \"><a href=\"..\/Docs\/P00045_Ibis_Jr.htm\">#45p<\/a><\/span> Ibis Jr., <span title=\"header=[] body=[<b>#47p Gymnotus (1878)<br>Steam Launch built for George R. Dunell {England}; designed by NGH; LOA&nbsp;30ft<\/b>] \"><a href=\"..\/Docs\/P00047_Gymnotus.htm\">#47p<\/a><\/span> Gymnotus, <span title=\"header=[] body=[<b>#48p {Steam Launch} (1879)<br>Steam Launch; designed by NGH; LOA&nbsp;30ft<\/b>] \"><a href=\"..\/Docs\/P00048_Steam_Launch.htm\">#48p<\/a><\/span> [Steam Launch], <span title=\"header=[] body=[<b>#59p {Open Steam Yacht} (1879)<br>Open Steam Yacht Sidewheel; designed by NGH; LOA&nbsp;30ft<\/b>] \"><a href=\"..\/Docs\/P00059_Open_Yacht.htm\">#59p<\/a><\/span> [Open Steam Yacht]", "collection1":"", "note":"\"Diameter of Cylinder 2.5in.; Stroke 5in.; Max. Rev. per Min. 420; Max. Steam Pres. per Sq. Inch. 145lbs.; Max. Horse Power 4.5 [sic, i.e. 9h.p. because this was a 'double engine' said on the same leaflet as having twice the horsepower of a regular engine]. [Fitted] with feed pumps, with or without air pumps and regulators. Complete brass casing for cylinders.\" (Source: Herreshoff Manufacturing Co. (creator). Data from 'Descriptive List of Plain, Single & Double Engines, for Portable, Stationary or Marine Use' on Printed Advertising Leaflet titled 'Herreshoff Manufacturing Company, Bristol, R.I. Sole Manufacturers of the Patent Safety Coil Boiler, Builders of Steam Vessels, Yachts, Launches, Portable, Stationary and Marine Engines, Pumps, Propeller Wheels and Safety Valves'. Herreshoff Marine Museum Collection, Acc. no. 86.228A. HMM Library Rare Books Room (Box 1), Folder [no #]. No date, ca1879??.)\n\n\"This engine was a 'double engine' and consisted basically of two single-cylinder high pressure engines running in tandem and driving the same propeller shaft.  NGH employed double engines only between 1876 and 1880. Their advantage may have been a more compact form factor compared to a single high-pressure engine of much larger stroke and cylinder diameter and the capability to self-start in all positions. Double engines were quickly superceded by two-cylinder compound engines and, eventually, three cylinder triple engines which also offered these advantages in addition to much better efficiency and a better power-per-weight performance.\" (Source: van der Linde, Claas. November 12, 2018.)", "uei":"1Exp_05000Stroke_02500H02500H_Prim"},
   {"longdesc":"3 1\/2\" & 6\" bore x 7\" stroke", "supdata":"<b>Double exp.<\/b><br>2 cyl.<br>Prim. engine<br>16h.p.", "firstbuilt":"1879", "lastbuilt":"1884", "unitsbuilt":"12", "primengdwg":"", "assodwgs":"014-028, 014-030, 014-027, 014-029, 014-001, 014-032, 014-031 1/2", "imgs":"Eng_2Exp_07000Stroke_03500H06000L_Prim_1880_03_11_Forest_p115.jpg, Eng_2Exp_07000Stroke_03500H06000L_Prim_HMM_2018-075-001.jpg, Eng_2Exp_07000Stroke_03500H06000L_Prim_2018-075-001v.jpg, Eng_2Exp_07000Stroke_03500H06000L_Prim_from_HDwg003-020_HH50016300_94p_Launch_for_USS_Albatross.jpg", "usedby":"<span title=\"header=[] body=[<b>#49p Sinbad {Sindbad} (1879)<br>Cabin Steam Launch built for Philip Schuyler {F. S. G. d'Hauteville?}; designed by NGH; LOA&nbsp;42ft<\/b><img src='..\/Images_Vessels\/w250px\/P00049_Sinbad_a.jpg'>] \"><a href=\"..\/Docs\/P00049_Sinbad.htm\">#49p<\/a><\/span> Sinbad, <span title=\"header=[] body=[<b>#50p Spray (1879)<br>Cabin Steam Launch built for U.S. Navy; designed by NGH; LOA&nbsp;42ft<\/b>] \"><a href=\"..\/Docs\/P00050_Spray.htm\">#50p<\/a><\/span> Spray, <span title=\"header=[] body=[<b>#54p Dolphin (1879)<br>Cabin Steam Launch built for Robert Lenox Kennedy; designed by NGH; LOA&nbsp;42ft<\/b>] \"><a href=\"..\/Docs\/P00054_Dolphin.htm\">#54p<\/a><\/span> Dolphin, <span title=\"header=[] body=[<b>#56p Lucy (1880)<br>Cabin Steam Launch built for Frank S. Birch; designed by NGH; LOA&nbsp;42ft<\/b>] \"><a href=\"..\/Docs\/P00056_Lucy.htm\">#56p<\/a><\/span> Lucy, <span title=\"header=[] body=[<b>#67p {Harvard Coaching Launch} (1880)<br>Steam Launch built for Harvard Rowing Association; designed by NGH; LOA&nbsp;40ft<\/b><img src='..\/Images_Vessels\/w250px\/P00067_Harvard_Coaching_Launch.jpg'>] \"><a href=\"..\/Docs\/P00067_Harvard_Coaching_Launch.htm\">#67p<\/a><\/span> [Harvard Coaching Launch], <span title=\"header=[] body=[<b>#71p Sport (1880)<br>Steam Yacht built for Charles R. and Joseph P. Flint and Earle; designed by NGH; LOA&nbsp;45ft<\/b>] \"><a href=\"..\/Docs\/P00071_Sport.htm\">#71p<\/a><\/span> Sport, <span title=\"header=[] body=[<b>#90p {Whale Boat built in New Bedford} (1882)<br>Steam Whale Boat; LOA&nbsp;27ft<\/b>] \"><a href=\"..\/Docs\/P00090_Whale_boat_built_in_New_Bedford.htm\">#90p<\/a><\/span> [Whale boat built in New Bedford], <span title=\"header=[] body=[<b>#94p {Launch for U.S.S. Albatross} (1882)<br>Steam Launch built for U.S. Fish Commission; designed by NGH; LOA&nbsp;26ft&nbsp;3in<\/b><img src='..\/Images_Vessels\/w250px\/P00094_Launch_for_Albatross.jpg'>] \"><a href=\"..\/Docs\/P00094_Launch_for_Albatross.htm\">#94p<\/a><\/span> [Launch for U.S.S. Albatross], <span title=\"header=[] body=[<b>#96p {Whale Boat built in New Bedford} (1882)<br>Steam Whale Boat; LOA&nbsp;29ft<\/b>] \"><a href=\"..\/Docs\/P00096_Whale_boat_built_in_New_Bedford.htm\">#96p<\/a><\/span> [Whale boat built in New Bedford], <span title=\"header=[] body=[<b>#97p {Whale Boat built in New Bedford} (1882)<br>Steam Whale Boat; LOA&nbsp;29ft<\/b>] \"><a href=\"..\/Docs\/P00097_Whale_boat_built_in_New_Bedford.htm\">#97p<\/a><\/span> [Whale boat built in New Bedford], <span title=\"header=[] body=[<b>#107p {Cutter for U.S.C.S. Patterson} (1884)<br>Steam Cutter built for U.S. Coast Survey; designed by NGH; LOA&nbsp;27ft<\/b>] \"><a href=\"..\/Docs\/P00107_Cutter_for_USCS_Patterson.htm\">#107p<\/a><\/span> [Cutter for U.S.C.S. Patterson]", "collection1":"", "note":"\"Diam. of High. Pres. Cyl. 3.5in.; Diam. of Low Pres. Cyl. 6in.; Stroke 7in.; Max. Rev. per Min. 343; Max. Steam Pres. per Sq. Inch. 140lbs.; Max. Horse Power 16. [Fitted] with feed and air pumps, with or without regulators. Brass casing to cylinders.\" (Source: Herreshoff Manufacturing Co. (creator). Data from 'Descriptive List of Compound Condensing Engines for Stationary or Marine Use' on Printed Advertising Leaflet titled 'Herreshoff Manufacturing Company, Bristol, R.I. Sole Manufacturers of the Patent Safety Coil Boiler, Builders of Steam Vessels, Yachts, Launches, Portable, Stationary and Marine Engines, Pumps, Propeller Wheels and Safety Valves'. Herreshoff Marine Museum Collection, Acc. no. 86.228A. HMM Library Rare Books Room (Box 1), Folder [no #]. No date, ca1879??.)\n\n\"... The Compound Condensing Engine, the cut of which is given, has a side lever air pump, with hot well and feed pump attached to it. It is the representation of the engine exhibited at the Fair of the American Institute, New York, 1879, to which, and the boiler, medals of excellence and a diploma were awarded. ...[Same woodcut as in Forest and Stream, March 11, 1880, p. 115-116.]\" (Source: Anon. \"The Herreshoff Marine Engine and Boiler.\" American Machinist, January 17, 1880, p. 5.)\n\n\"A note in the Construction Record shows that the old 2x3 1\/2\" bore x 7\" stroke double engine of #43p Kelpie was replaced with this type of engine in March 1870.\" (Source: van der Linde, Claas. July 18, 2021.)", "uei":"2Exp_07000Stroke_03500H06000L_Prim"},
   {"longdesc":"4 1\/4\" & 7\" bore x 7\" stroke", "supdata":"<b>Double exp.<\/b><br>2 cyl.<br>Prim. engine<br>23h.p.<br>460lbs", "firstbuilt":"1880", "lastbuilt":"1898", "unitsbuilt":"21", "primengdwg":"", "assodwgs":"014-031, 014-033, 014-034, 014-037, 014-043, 014-042, 014-040, 014-039, 014-041, 014-044, 014-036, 014-035, 014-038, 014-047 1/2, 014-047, 014-000", "imgs":"Eng_2Exp_07000Stroke_04250H07000L_Prim_from_HDwg003-016_HH50015900_78p_Juliet_a.jpg, Eng_2Exp_07000Stroke_04250H07000L_Prim_from_HDwg003-016_HH50015900_78p_Juliet_b.jpg, Eng_2Exp_07000Stroke_04250H07000L_Prim_from_HDwg003-007_HH50015300_62p_Launch_for_US_Navy.jpg, Eng_2Exp_07000Stroke_04250H07000L_Prim_from_HDwg003-034_HH50017400_115p_Launch_for_USS_Boston_a.jpg, Eng_2Exp_07000Stroke_04250H07000L_Prim_from_HDwg003-034_HH50017400_115p_Launch_for_USS_Boston_b.jpg, Eng_2Exp_07000Stroke_04250H07000L_Prim_from_HDwg003-034_HH50017400_115p_Launch_for_USS_Boston_c.jpg, Eng_2Exp_07000Stroke_04250H07000L_Prim_from_HDwg002-007_HH50000700_195p_Launch_for_St_Y_Dorothy_a.jpg, Eng_2Exp_07000Stroke_04250H07000L_Prim_from_HDwg002-007_HH50000700_195p_Launch_for_St_Y_Dorothy_b.jpg", "usedby":"<span title=\"header=[] body=[<b>#62p {Launch for U.S. Navy} (1880)<br>Steam Launch built for U.S. Navy; designed by NGH; LOA&nbsp;33ft&nbsp;1in<\/b><img src='..\/Images_Vessels\/w250px\/P00062_Launch_US_Navy_No_Hood_b.jpg'>] \"><a href=\"..\/Docs\/P00062_Launch_for_US_Navy.htm\">#62p<\/a><\/span> [Launch for U.S. Navy], <span title=\"header=[] body=[<b>#78p Juliet (1881)<br>Cabin Steam Launch built for A. Newbold Morris; designed by NGH; LOA&nbsp;45ft<\/b><img src='..\/Images_Vessels\/w250px\/P00078_Juliet_by_Kathy_Bray.gif'>] \"><a href=\"..\/Docs\/P00078_Juliet.htm\">#78p<\/a><\/span> Juliet, <span title=\"header=[] body=[<b>#80p {Launch for British Navy} (1881)<br>Steam Launch built for British Navy; designed by NGH; LOA&nbsp;33ft&nbsp;1in<\/b>] \"><a href=\"..\/Docs\/P00080_Launch_for_British_Navy.htm\">#80p<\/a><\/span> [Launch for British Navy], <span title=\"header=[] body=[<b>#81p {Launch for British Navy} (1881)<br>Steam Launch built for British Navy; designed by NGH; LOA&nbsp;33ft&nbsp;1in<\/b>] \"><a href=\"..\/Docs\/P00081_Launch_for_British_Navy.htm\">#81p<\/a><\/span> [Launch for British Navy], <span title=\"header=[] body=[<b>#82p Cygnet (1882)<br>Steam Launch built for N.Y. Fish Commission.; designed by NGH; LOA&nbsp;33ft&nbsp;1in<\/b>] \"><a href=\"..\/Docs\/P00082_Cygnet.htm\">#82p<\/a><\/span> Cygnet, <span title=\"header=[] body=[<b>#99p Xantho (1884)<br>Cabin Steam Launch built for J{abez} B{unting} Watkins; designed by NGH; LOA&nbsp;45ft&nbsp;0in<\/b><img src='..\/Images_Vessels\/w250px\/P00099_Xantho_being_built.jpg'>] \"><a href=\"..\/Docs\/P00099_Xantho.htm\">#99p<\/a><\/span> Xantho, <span title=\"header=[] body=[<b>#106p {Cutter for U.S.S. Dolphin} (1884)<br>Steam Cutter built for U.S. Navy; designed by NGH; LOA&nbsp;28ft<\/b>] \"><a href=\"..\/Docs\/P00106_Cutter_for_USS_Dolphin.htm\">#106p<\/a><\/span> [Cutter for U.S.S. Dolphin], <span title=\"header=[] body=[<b>#111p {Launch for U.S.S. Hartford} (1884)<br>Steam Launch built for U.S. Navy; designed by NGH; LOA&nbsp;33ft<\/b>] \"><a href=\"..\/Docs\/P00111_Launch_for_USS_Hartford.htm\">#111p<\/a><\/span> [Launch for U.S.S. Hartford], <span title=\"header=[] body=[<b>#115p {Launch for U.S.S. Boston} (1884)<br>Steam Launch built for U.S. Navy; designed by NGH; LOA&nbsp;33ft<\/b>] \"><a href=\"..\/Docs\/P00115_Launch_for_USS_Boston.htm\">#115p<\/a><\/span> [Launch for U.S.S. Boston], <span title=\"header=[] body=[<b>#112p {Drawings only for Open Steam Yacht built in Ottawa} (1884)<br>Cabin Steam Launch built for N\/A {owner in Ottawa}; LOA&nbsp;45ft<\/b>] \"><a href=\"..\/Docs\/P00112_Drawings_only_for_open_steam_yacht.htm\">#112p<\/a><\/span> [Drawings only for open steam yacht built in Ottawa], <span title=\"header=[] body=[<b>#113p {Cutter for St. Y. Nourmahal hull built by Harlan} (1884)<br>Steam Cutter built for William Astor; LOA&nbsp;35ft<\/b>] \"><a href=\"..\/Docs\/P00113_Cutter_for_St_Y_Nourmahal.htm\">#113p<\/a><\/span> [Cutter for St. Y. Nourmahal hull built by Harlan], <span title=\"header=[] body=[<b>#119p Surprise {Launch for St. Y. Atalanta} (1884)<br>Steam Launch built for Jay Gould; designed by NGH; LOA&nbsp;35ft<\/b><img src='..\/Images_Vessels\/w250px\/P00119_Atalantas_Launch.jpg'>] \"><a href=\"..\/Docs\/P00119_Launch_for_St_Y_Atalanta.htm\">#119p<\/a><\/span> Surprise [Launch for St. Y. Atalanta], <span title=\"header=[] body=[<b>#125p {Machinery only for cutter Portsmouth Navy Yard} (1885)<br>Steam Engine Only built for U.S. Portsmouth Navy Yard; LOA&nbsp;33ft<\/b>] \"><a href=\"..\/Docs\/P00125_Cutter_for_US_Navy_Yard_Portsmouth.htm\">#125p<\/a><\/span> [Cutter for U.S. Navy Yard Portsmouth], <span title=\"header=[] body=[<b>#126p {Machinery only for Adelante built by Poillon} (1885)<br>Steam Engine Only<\/b>] \"><a href=\"..\/Docs\/P00126_Machinery_only_hull_built_by_Poillon.htm\">#126p<\/a><\/span> [Machinery only hull Adelante built by Poillon], <span title=\"header=[] body=[<b>#127p {Machinery only for Ollie built by Poillon} (1885)<br>Steam Engine Only<\/b>] \"><a href=\"..\/Docs\/P00127_Machinery_only_hull_built_by_Poillon.htm\">#127p<\/a><\/span> [Machinery only hull Ollie built by Poillon], <span title=\"header=[] body=[<b>#135p {Machinery only for U.S. Navy} (1886)<br>Steam Engine Only built for U.S. Navy<\/b>] \"><a href=\"..\/Docs\/P00135_Machinery_only_for_US_Navy.htm\">#135p<\/a><\/span> [Machinery only for U.S. Navy], <span title=\"header=[] body=[<b>#132p {Launch for U.S.S. Atlanta} (1886)<br>Steam Launch built for U.S. Navy; designed by NGH; LOA&nbsp;33ft<\/b>] \"><a href=\"..\/Docs\/P00132_Launch_for_USS_Atlanta.htm\">#132p<\/a><\/span> [Launch for U.S.S. Atlanta], <span title=\"header=[] body=[<b>#143p {Machinery only for cutter Portsmouth Navy Yard} (1887)<br>Steam Engine Only built for U.S. Portsmouth Navy Yard; LOA&nbsp;33ft<\/b>] \"><a href=\"..\/Docs\/P00143_Machinery_only_for_cutter_Portsmouth_Navy_Yard.htm\">#143p<\/a><\/span> [Machinery only for cutter Portsmouth Navy Yard], <span title=\"header=[] body=[<b>#145p {Machinery only for cutter Portsmouth Navy Yard} (1887)<br>Steam Engine Only built for U.S. Portsmouth Navy Yard; LOA&nbsp;33ft<\/b>] \"><a href=\"..\/Docs\/P00145_Machinery_only_for_cutter_Portsmouth_Navy_Yard.htm\">#145p<\/a><\/span> [Machinery only for cutter Portsmouth Navy Yard], <span title=\"header=[] body=[<b>#174p Loon (1893)<br>Steam Yacht built for Robert M. Riddle {Herreshoff, N. G. owner in 1896}; designed by NGH; LOA&nbsp;62ft<\/b><img src='..\/Images_Vessels\/w250px\/P00174_Loon_Almy_Album.jpg'>] \"><a href=\"..\/Docs\/P00174_Loon.htm\">#174p<\/a><\/span> Loon, <span title=\"header=[] body=[<b>#195p {Launch for St. Y. Dorothy} (1898)<br>Steam Launch built for William Cramp & Sons {McKean}; designed by NGH; LOA&nbsp;27ft&nbsp;11.25in<\/b>] \"><a href=\"..\/Docs\/P00195_Launch_for_Dorothea.htm\">#195p<\/a><\/span> [Launch for St. Y. Dorothy]", "collection1":"", "note":"\"Diam. of High. Pres. Cyl. 4.25in.; Diam. of Low Pres. Cyl. 7in.; Stroke 7in.; Max. Rev. per Min. 343; Max. Steam Pres. per Sq. Inch. 140lbs.; Max. Horse Power 23. [Fitted] with feed and air pumps, with or without regulators. Brass casing to cylinders.\" (Source: Herreshoff Manufacturing Co. (creator). Data from 'Descriptive List of Compound Condensing Engines for Stationary or Marine Use' on Printed Advertising Leaflet titled 'Herreshoff Manufacturing Company, Bristol, R.I. Sole Manufacturers of the Patent Safety Coil Boiler, Builders of Steam Vessels, Yachts, Launches, Portable, Stationary and Marine Engines, Pumps, Propeller Wheels and Safety Valves'. Herreshoff Marine Museum Collection, Acc. no. 86.228A. HMM Library Rare Books Room (Box 1), Folder [no #]. No date, ca1879??.)\n\n\"[Detailed data and dimensioned sketches of valve titled 'Notes and data from model of [Stephenson Link] Valve Gearing' of 4 1\/4\" & 7\" bore x 7\" stroke engine.]\" (Source: Herreshoff, N.G. Handwritten notes in Design Book No. 1. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum. November 16, 1884.)", "uei":"2Exp_07000Stroke_04250H07000L_Prim"},
   {"longdesc":"2x4 1\/4\" bore x 7\" stroke", "supdata":"<b>Simple exp.<\/b><br>2 cyl.<br>Prim. engine<br>28h.p.", "firstbuilt":"1880", "lastbuilt":"1880", "unitsbuilt":"1", "primengdwg":"", "assodwgs":"", "imgs":"", "usedby":"<span title=\"header=[] body=[<b>#63p {Launch for U.S.S. Tennessee} (1880)<br>Steam Launch built for U.S. Navy; designed by NGH; LOA&nbsp;33ft&nbsp;1in<\/b>] \"><a href=\"..\/Docs\/P00063_Launch_for_US_Navy.htm\">#63p<\/a><\/span> [Launch for U.S. Navy]", "collection1":"", "note":"\"Diameter of Cylinder 4.25in.; Stroke 7in.; Max. Rev. per Min. 343; Max. Steam Pres. per Sq. Inch. 140lbs.; Max. Horse Power 14 [sic, i.e. 28h.p. because this was a 'double engine' said on the same leaflet as having twice the horsepower of a regular engine]. [Fitted] with feed pumps, with or without air pumps and regulators. Complete brass casing for cylinders.\" (Source: Herreshoff Manufacturing Co. (creator). Data from 'Descriptive List of Plain, Single & Double Engines, for Portable, Stationary or Marine Use' on Printed Advertising Leaflet titled 'Herreshoff Manufacturing Company, Bristol, R.I. Sole Manufacturers of the Patent Safety Coil Boiler, Builders of Steam Vessels, Yachts, Launches, Portable, Stationary and Marine Engines, Pumps, Propeller Wheels and Safety Valves'. Herreshoff Marine Museum Collection, Acc. no. 86.228A. HMM Library Rare Books Room (Box 1), Folder [no #]. No date, ca1879??.)\n\n\"No plans or pattern descriptions for this engine appear to have survived. It was a 'double engine' and consisted basically of two single-cylinder high pressure engines running in tandem and driving the same propeller shaft.  NGH employed double engines only between 1876 and 1880. Their advantage may have been a more compact form factor compared to a single high-pressure engine of much larger stroke and cylinder diameter and the capability to self-start in all positions. Double engines were quickly superceded by two-cylinder compound engines and, eventually, three cylinder triple engines which also offered these advantages in addition to much better efficiency and a better power-per-weight performance.\" (Source: van der Linde, Claas. November 12, 2018.)", "uei":"1Exp_07000Stroke_04250H04250H_Prim"},
   {"longdesc":"8\" & 14\" bore x 9\" stroke", "supdata":"<b>Double exp.<\/b><br>2 cyl.<br>Prim. engine", "firstbuilt":"1880", "lastbuilt":"1881", "unitsbuilt":"3", "primengdwg":"", "assodwgs":"010-010, 009-002, 010-012", "imgs":"Eng_2Exp_09000Stroke_08000H14000L_Prim_from_HDwg003-013_HH50015702_74p_149_75p_150_a.jpg, Eng_2Exp_09000Stroke_08000H14000L_Prim_from_HDwg003-013_HH50015702_74p_149_75p_150_b.jpg", "usedby":"<span title=\"header=[] body=[<b>#64p {Torpedo Boat for Russian Navy} (1880)<br>Navy Steam Torpedo Boat built for Russian Navy; designed by NGH; LOA&nbsp;59ft<\/b><img src='..\/Images_Vessels\/w250px\/P00064_Torpedo_Boat_for_Russian_Navy.jpg'>] \"><a href=\"..\/Docs\/P00064_Torpedo_Boat_for_Russian_Navy.htm\">#64p<\/a><\/span> [Torpedo Boat for Russian Navy], <span title=\"header=[] body=[<b>#74p 149 (1881)<br>Navy Steam Vedette Boat built for British Navy; designed by NGH; LOA&nbsp;48ft<\/b>] \"><a href=\"..\/Docs\/P00074_149.htm\">#74p<\/a><\/span> 149, <span title=\"header=[] body=[<b>#75p 150 (1881)<br>Navy Steam Vedette Boat built for British Navy; designed by NGH; LOA&nbsp;48ft<\/b><img src='..\/Images_Vessels\/w250px\/P00075_No150.jpg'>] \"><a href=\"..\/Docs\/P00075_150.htm\">#75p<\/a><\/span> 150", "collection1":"", "note":"\"[Detailed data and dimensioned sketches of valve and Stephenson link titled 'Notes and data from model of Valve Gearing' of 8\" & 14\" bore x 9\" stroke engine.]\" (Source: Herreshoff, N.G. Handwritten notes in Design Book No. 1. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum. May 23, 1881.)\n\n\"See MRDE11_02380 which appears to show 8\" & 14\" bore x 9\" stroke cylinders that might be related to this engine.\" (Source: van der Linde, Claas. October 28, 2021.)", "uei":"2Exp_09000Stroke_08000H14000L_Prim"},
   {"longdesc":"10 1\/2\" & 18\" bore x 18\" stroke", "supdata":"<b>Double exp.<\/b><br>2 cyl.<br>Prim. engine<br>192 \/ 200h.p.", "firstbuilt":"1880", "lastbuilt":"1882", "unitsbuilt":"2", "primengdwg":"", "assodwgs":"021-047, 021-031, 021-030, 021-033, 021-035, 021-026, 021-032, 021-042, 021-046, 021-051, 021-056, 021-061", "imgs":"Eng_2Exp_18000Stroke_10500H18000L_Prim_from_HDwg001-001_HH50041400_88p_Siesta_a.jpg, Eng_2Exp_18000Stroke_10500H18000L_Prim_from_HDwg001-001_HH50041400_88p_Siesta_b.jpg", "usedby":"<span title=\"header=[] body=[<b>#65p Gleam (1880)<br>Steam Yacht built for William H. Graham; designed by NGH; LOA&nbsp;112ft<\/b><img src='..\/Images_Vessels\/w250px\/P00065_Gleam_HMM86180B.jpg'>] \"><a href=\"..\/Docs\/P00065_Gleam.htm\">#65p<\/a><\/span> Gleam, <span title=\"header=[] body=[<b>#88p Siesta (1882)<br>Steam Yacht built for H{ulbert} H. Warner; designed by NGH; LOA&nbsp;98ft<\/b><img src='..\/Images_Vessels\/w250px\/P00088_Siesta.jpg'>] \"><a href=\"..\/Docs\/P00088_Siesta.htm\">#88p<\/a><\/span> Siesta", "collection1":"", "note":"\"Diam. of High. Pres. Cyl. 10.5in.; Diam. of Low Pres. Cyl. 18in.; Stroke 18in.; Max. Rev. per Min. 195; Max. Steam Pres. per Sq. Inch. 125lbs.; Max. Horse Power 192. [Fitted] with feed and air pumps, with or without regulators. Brass casing to cylinders. [Has] variable cut-off valve.\" (Source: Herreshoff Manufacturing Co. (creator). Data from 'Descriptive List of Compound Condensing Engines for Stationary or Marine Use' on Printed Advertising Leaflet titled 'Herreshoff Manufacturing Company, Bristol, R.I. Sole Manufacturers of the Patent Safety Coil Boiler, Builders of Steam Vessels, Yachts, Launches, Portable, Stationary and Marine Engines, Pumps, Propeller Wheels and Safety Valves'. Herreshoff Marine Museum Collection, Acc. no. 86.228A. HMM Library Rare Books Room (Box 1), Folder [no #]. No date, ca1879??.)\n\n\"...The Siesta is propelled by a compound condensing engine of 200 I. H. P. (maximum), having cylinders 10 1\/2\" and 18\" x 18\". Steam is supplied by a Herreshoff boiler, having a grate 68 inches in diameter. ...\" (Source: Anon. \"Steam Yacht Building In Rhode Island. The Herreshoff Manufacturing Company And Its Operations.\" The Mechanical Engineer, September 2, 1882, p. 55.)\n\n\"Detailed information about this engine, including indicator diagrams, can be found in Isherwood, Benjamin Franklin. \"Report Made to the Bureau of Steam-Engineering, Navy Department, on the Hull, Engine, and Boiler of the Steam-Yacht 'Siesta,' constructed by the Herreshoff Manufacturing Company.\" Washington, March 3, 1883.\" (Source: van der Linde, Claas. July 21, 2021.)", "uei":"2Exp_18000Stroke_10500H18000L_Prim"},
   {"longdesc":"6\" bore x 24\" stroke", "supdata":"<b>Simple exp.<\/b><br>1 cyl.<br>Prim. engine", "firstbuilt":"1880", "lastbuilt":"1882", "unitsbuilt":"2", "primengdwg":"", "assodwgs":"", "imgs":"", "usedby":"<span title=\"header=[] body=[<b>#69p {Machinery and drawings of hull only} (1880)<br>Steam Engine Only Sidewheel; designed by NGH; LOA&nbsp;50ft<\/b>] \"><a href=\"..\/Docs\/P00069_Machinery_and_drawings_of_hull_only.htm\">#69p<\/a><\/span> [Machinery and drawings of hull only], <span title=\"header=[] body=[<b>#98p Augusta {I} (1882)<br>Steam Yacht Sidewheel built for Charles H. Kellogg; designed by NGH; LOA&nbsp;55ft<\/b>] \"><a href=\"..\/Docs\/P00098_Augusta.htm\">#98p<\/a><\/span> Augusta [I]", "collection1":"", "note":"\"No plans or pattern descriptions for this engine appear to have survived. This engine was used for two side-wheel steam yachts.\" (Source: van der Linde, Claas. July 31, 2021.)", "uei":"1Exp_24000Stroke_06000H_Prim"},
   {"longdesc":"2 1\/2\" & 4 1\/4\" bore x 5\" stroke", "supdata":"<b>Double exp.<\/b><br>2 cyl.<br>Prim. engine<br>7.6h.p.", "firstbuilt":"1881", "lastbuilt":"1885", "unitsbuilt":"6", "primengdwg":"", "assodwgs":"009-041, 012-004, 012-009", "imgs":"Eng_2Exp_05000Stroke_02500H04250L_Prim_Henry_Ford_1880s_ca_HMCo_Photo_HMCo_Photobox_Bray_Collection_a_crop.jpg, Eng_2Exp_05000Stroke_02500H04250L_Prim_Henry_Ford_1880s_ca_HMCo_Photo_HMCo_Photobox_Bray_Collection_a.jpg, Eng_2Exp_05000Stroke_02500H04250L_Prim_Henry_Ford_1880s_ca_HMCo_Photo_HMCo_Photobox_Bray_Collection_b.jpg, Eng_2Exp_05000Stroke_02500H04250L_Prim_Henry_Ford_Museum_2010_06_16_Internet_Photo_02.jpg, Eng_2Exp_05000Stroke_02500H04250L_Prim_Henry_Ford_Museum_2010_06_16_Internet_Photo_18.jpg, Eng_2Exp_05000Stroke_02500H04250L_Prim_Henry_Ford_Museum_2010_06_16_Internet_Photo_25.jpg, Eng_2Exp_05000Stroke_02500H04250L_Prim_Henry_Ford_Museum_2010_06_16_Internet_Photo_43.jpg, Eng_2Exp_05000Stroke_02500H04250L_Prim_HMM_2018_10_22_van_der_Linde_Photo_c.jpg, Eng_2Exp_05000Stroke_02500H04250L_Prim_HMM_2018_10_27_van_der_Linde_Photo_a.jpg, Eng_2Exp_05000Stroke_02500H04250L_Prim_HMM_2018_10_27_van_der_Linde_Photo_b.jpg, Eng_2Exp_05000Stroke_02500H04250L_Prim_HMM_2018_10_27_van_der_Linde_Photo_d.jpg", "usedby":"<span title=\"header=[] body=[<b>#73p {Launch for St. Y. Radha} (1881)<br>Steam Launch built for Pierre Lorillard; designed by NGH; LOA&nbsp;30ft<\/b>] \"><a href=\"..\/Docs\/P00073_Launch_for_St_Y_Radha.htm\">#73p<\/a><\/span> [Launch for St. Y. Radha], <span title=\"header=[] body=[<b>#87p {Whale Boat built in New Bedford} (1881)<br>Steam Whale Boat; LOA&nbsp;31ft<\/b>] \"><a href=\"..\/Docs\/P00087_Whale_boat_built_in_New_Bedford.htm\">#87p<\/a><\/span> [Whale boat built in New Bedford], <span title=\"header=[] body=[<b>#95p {Gig for U.S.S. Albatross} (1882)<br>Steam Launch built for U.S. Fish Commission; designed by NGH; LOA&nbsp;25ft<\/b><img src='..\/Images_Vessels\/w250px\/P00095_Gig_for_Albatross.jpg'>] \"><a href=\"..\/Docs\/P00095_Gig_for_Albatross.htm\">#95p<\/a><\/span> [Gig for U.S.S. Albatross], <span title=\"header=[] body=[<b>#103p {Launch for St. Y. Atalanta} (1883)<br>Steam Launch built for Jay Gould; designed by NGH; LOA&nbsp;30ft<\/b>] \"><a href=\"..\/Docs\/P00103_Launch_for_St_Y_Atalanta.htm\">#103p<\/a><\/span> [Tender for U.S.S. Atlanta], <span title=\"header=[] body=[<b>#129p Republic {Launch for Schr. Y. Republic} (1885)<br>Steam Launch built for Wright Duryea; designed by NGH; LOA&nbsp;22ft&nbsp;6in<\/b>] \"><a href=\"..\/Docs\/P00129_Launch_for_schooner_Republic.htm\">#129p<\/a><\/span> Republic [Launch for Schr. Y. Republic], <span title=\"header=[] body=[<b>#130p {Launch for St. Y. Electra} (1885)<br>Steam Launch built for Elbridge T. Gerry; designed by NGH; LOA&nbsp;22ft&nbsp;6in<\/b>] \"><a href=\"..\/Docs\/P00130_Launch_for_St_Y_Electra.htm\">#130p<\/a><\/span> [Launch for St. Y. Electra]", "collection1":"Two engines:\n1) Herreshoff Marine Museum (acc. no. 1977-020)\n2) Henry Ford Museum (which reports it as 3 1\/2\" x 6\" x 6\").", "note":"\"Diam. of High. Pres. Cyl. 2.5in.; Diam. of Low Pres. Cyl. 4.25in.; Stroke 5in.; Max. Rev. per Min. 420; Max. Steam Pres. per Sq. Inch. 145lbs.; Max. Horse Power 7.6. [Fitted] with feed and air pumps, with or without regulators. Brass casing to cylinders.\" (Source: Herreshoff Manufacturing Co. (creator). Data from 'Descriptive List of Compound Condensing Engines for Stationary or Marine Use' on Printed Advertising Leaflet titled 'Herreshoff Manufacturing Company, Bristol, R.I. Sole Manufacturers of the Patent Safety Coil Boiler, Builders of Steam Vessels, Yachts, Launches, Portable, Stationary and Marine Engines, Pumps, Propeller Wheels and Safety Valves'. Herreshoff Marine Museum Collection, Acc. no. 86.228A. HMM Library Rare Books Room (Box 1), Folder [no #]. No date, ca1879??.)\n\n\"[Detailed data and dimensioned sketches of valve titled 'Notes and data from model of [Stephenson Link] Valve Gearing' of 2 1\/2\" & 4 1\/4\" bore x 5\" stroke engine.]\" (Source: Herreshoff, N.G. Handwritten notes in Design Book No. 1. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum. October 10, 1885.)\n\n\"A compound 2 1\/2in & 4 1\/4in x 5in engine of type designed for small launches. This one was fitted up with surface condenser in the bell shaped base and was for instructionn purposes in a college. I have forgotton what one. The whole engine above bed was of polished bronze. Built in early [18]80s. N.G. H. Memo of M[ar]ch 1931.\" (Source: Herreshoff, Nathanael G. Handwritten (in ink) memo on verso of photo of steam engine in Maynard Bray Collecton.)\n\n\"A. Sidney DeW. Herreshoff\nNaval Architect and Marine Engineer\n125 Hope St., Bristol, Rhode Island\nFeb. 26, 1958\nMr. Robert M. Vogel\nAssociate Curator\nDivision of Mechanical and Civil Engineering\nSmithsonian Institution\nWashington 25, D.C.\nDear Mr. Vogel,\nThis is in rely to your letter of Feb. 14, 1958 inquiring about the Herreshoff steam engine that was at Brown University. I remember of seeing this engine at the Brown Engineering Laboratory about fifteen or twenty years ago, and I have seen photographs of it. It was a compound launch engine mounted on a heavy cast iron base and fitted up to be suitable for students to run tests on. This engine was of a type built by the Herreshoff Mfg. Co. about 1880, and is quite different from those that were developed later, all designed by my Father Nathanael Greene Herreshoff. ...\nSincerely yours,\nA. Sidney DeW. Herreshoff.\" (Source: Herreshoff, A. Sidney DeW. Letter to Robert M. Vogel, Associate Curator, Division of Mechanical and Civil Engineering, Smithsonian Institution, Washington. Febryary 26, 1958. Letter in the Collection of the Smithsonian Institution.)\n\n\"[This engine had piston valves.]\" (Source: Evans, Rolly. Email to Claas van der Linde, May 12, 2015.)\n\n\"The engine at HMM was apparently donated to HMM in 1977 by Fred Simmons as per an article 'Herreshoff Museum Dedicated.' in the Bristol Phoenix of August 18, 1977, p. 4. It is engraved on its LP cylinder cover, but almost unreadable due to years of polishing: Herreshoff Mfg. Co.[?]; Hull No[?], Bristol, R.I.; U.S.A.[?]\" (Source: van der Linde, Claas. July 28, 2022.)", "uei":"2Exp_05000Stroke_02500H04250L_Prim"},
   {"longdesc":"8\" & 14\" bore x 14\" stroke", "supdata":"<b>Double exp.<\/b><br>2 cyl.<br>Prim. engine<br>106 \/ 100 \/ 150h.p.", "firstbuilt":"1882", "lastbuilt":"1891", "unitsbuilt":"10", "primengdwg":"", "assodwgs":"018-003, 018-006, 018-007, 018-008, 018-009, 036-025, 018-002, 018-001, 018-005, 018-004, 018-013, 018-012, 018-014, 018-022, 018-019, 018-011, 018-016, 018-017, 018-018, 018-020, 018-021, 018-015, 018-024, 018-023, 007-027, 007-029, 009-018, 018-025, 018-026", "imgs":"Eng_2Exp_14000Stroke_08000H14000L_Prim_from_HDwg003-023_HH50016600_102p_Gov_Hamilton_a.jpg, Eng_2Exp_14000Stroke_08000H14000L_Prim_from_HDwg003-023_HH50016600_102p_Gov_Hamilton_b.jpg", "usedby":"<span title=\"header=[] body=[<b>#83p Nereid (1882)<br>Steam Yacht built for Jay C. Smith; designed by NGH; LOA&nbsp;76ft&nbsp;0in<\/b><img src='..\/Images_Vessels\/w250px\/P00083_Nereid_aground.jpg'>] \"><a href=\"..\/Docs\/P00083_Nereid.htm\">#83p<\/a><\/span> Nereid, <span title=\"header=[] body=[<b>#85p {Vedette boat for French Navy} (1882)<br>Navy Steam Vedette Boat built for French Navy; designed by NGH; LOA&nbsp;48ft<\/b>] \"><a href=\"..\/Docs\/P00085_Vedette_boat_for_French_Navy.htm\">#85p<\/a><\/span> [Vedette boat for French Navy], <span title=\"header=[] body=[<b>#86p {Vedette boat for French Navy} (1882)<br>Navy Steam Vedette Boat built for French Navy; designed by NGH; LOA&nbsp;48ft<\/b>] \"><a href=\"..\/Docs\/P00086_Vedette_boat_for_French_Navy.htm\">#86p<\/a><\/span> [Vedette boat for French Navy], <span title=\"header=[] body=[<b>#92p Permelia (1882)<br>Steam Yacht built for Mark Hopkins; designed by NGH; LOA&nbsp;95ft<\/b><img src='..\/Images_Vessels\/w250px\/P00092_Aida_ex-Permelia_Cozzens.jpg'>] \"><a href=\"..\/Docs\/P00092_Permelia.htm\">#92p<\/a><\/span> Permelia, <span title=\"header=[] body=[<b>#102p Gov. Hamilton (1883)<br>Steamboat built for U.S. State of Maryland {owned by J. B. Herreshoff in 1894 and 1895}; designed by NGH; LOA&nbsp;76ft<\/b><img src='..\/Images_Vessels\/w250px\/P00102_Viva_ex-Gov_Hamilton_Stebbins_3273.jpg'>] \"><a href=\"..\/Docs\/P00102_Gov_Hamilton.htm\">#102p<\/a><\/span> Gov. Hamilton, <span title=\"header=[] body=[<b>#105p Marina (1884)<br>Steam Yacht built for J. B. Herreshoff {George A. Beck}; designed by NGH; LOA&nbsp;86ft<\/b><img src='..\/Images_Vessels\/w250px\/P00105_Marina_a.jpg'>] \"><a href=\"..\/Docs\/P00105_Marina.htm\">#105p<\/a><\/span> Marina, <span title=\"header=[] body=[<b>#122p Lucile {Lucile II} (1885)<br>Steam Yacht built for Charles H. Kellogg; designed by NGH; LOA&nbsp;90ft<\/b><img src='..\/Images_Vessels\/w250px\/P00122_Lucile_HMM86158.jpg'>] \"><a href=\"..\/Docs\/P00122_Lucile_Lucille.htm\">#122p<\/a><\/span> Lucile, <span title=\"header=[] body=[<b>#123p Ladoga (1885)<br>Steam Yacht built for George Gordon King; designed by NGH; LOA&nbsp;97ft<\/b><img src='..\/Images_Vessels\/w250px\/P00123_Ladoga_HMM.jpg'>] \"><a href=\"..\/Docs\/P00123_Ladoga.htm\">#123p<\/a><\/span> Ladoga, <span title=\"header=[] body=[<b>#147p {Machinery only for St. Y. Thyra} (1887)<br>Steam Engine Only built for A. A. Stewart {?}<\/b>] \"><a href=\"..\/Docs\/P00147_Machinery_only.htm\">#147p<\/a><\/span> [Machinery only for St. Y. Thyra], <span title=\"header=[] body=[<b>#167p {Machinery only for Wm. H. Hoyt} (1891)<br>Steam Engine Only built for Wm. H. Hoyt & Son<\/b>] \"><a href=\"..\/Docs\/P00167_Machinery_only_for_Wm_H_Hoyt.htm\">#167p<\/a><\/span> [Machinery only for Wm. H. Hoyt]", "collection1":"", "note":"\"Diam. of High. Pres. Cyl. 8in.; Diam. of Low Pres. Cyl. 14in.; Stroke 14in.; Max. Rev. per Min. 227; Max. Steam Pres. per Sq. Inch. 130lbs.; Max. Horse Power 106. [Fitted] with feed and air pumps, with or without regulators. Brass casing to cylinders. [Has] variable cut-off valve.\" (Source: Herreshoff Manufacturing Co. (creator). Data from 'Descriptive List of Compound Condensing Engines for Stationary or Marine Use' on Printed Advertising Leaflet titled 'Herreshoff Manufacturing Company, Bristol, R.I. Sole Manufacturers of the Patent Safety Coil Boiler, Builders of Steam Vessels, Yachts, Launches, Portable, Stationary and Marine Engines, Pumps, Propeller Wheels and Safety Valves'. Herreshoff Marine Museum Collection, Acc. no. 86.228A. HMM Library Rare Books Room (Box 1), Folder [no #]. No date, ca1879??.)\n\n\"[Detailed data and dimensioned sketches of Stephenson Link and valves titled 'Notes and data from model of Valve Gearing' of 8\" & 14\" bore x 14\" stroke engine.]\" (Source: Herreshoff, N.G. Handwritten notes in Design Book No. 1. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum. October 4, and October 7, 1880.)\n\n\"[Nereid's] machinery consists of an inverted, compound, condensing engine of 100 I. H. P., having cylinders of 8\" and 14\" x 14\". The boiler is on the Herreshoff coil system, and has a grate of 58 inches in diameter.\" (Source: Anon. \"Steam Yacht Building In Rhode Island. The Herreshoff Manufacturing Company And Its Operations.\" The Mechanical Engineer, September 2, 1882, p. 55.)\n\n\"... In pursuance of an order given by the French Admiralty the Herreshoff Company finished and delivered in July two vedette boats for use in the French navy. ... The vedette boats have engines of 150 H. P., their cylinders being 8\" and 14\" x 14\", the engine being specially made for this duty, its weight being 1400 pounds. The Herreshoff boilers in these boats have grates of 48 inches in diameter. ...\" (Source: Anon. \"Steam Yacht Building In Rhode Island. The Herreshoff Manufacturing Company And Its Operations.\" The Mechanical Engineer, September 2, 1882, p. 55.)\n\n\"Detailed information about this engine can be found in Isherwood, Benjamin Franklin. \"Report Made to the Bureau of Steam-Engineering, Navy Department, August 9, 1882, on the Vedette Boats Constructed for the British and French Navies by the Herreshoff Manufacturing Company at Bristol, R.I.\" Washington, 1882. [Held by: Haffenreffer-Herreshoff Collection. Francis Russell Hart Nautical Collections, MIT Museum, Cambridge, Mass. Technical and Business Records pertaining to the Herreshoff Manufacturing Company, Series VI, Folder HH.6.90 (Vedette Boats), Box Number Box HAFH.6.2B.].\" (Source: van der Linde, Claas. July 21, 2021.)", "uei":"2Exp_14000Stroke_08000H14000L_Prim"},
   {"longdesc":"14\" & 24\" bore x 24\" stroke", "supdata":"<b>Double exp.<\/b><br>2 cyl.<br>Prim. engine<br>350 \/ 370h.p.", "firstbuilt":"1882", "lastbuilt":"1882", "unitsbuilt":"2", "primengdwg":"", "assodwgs":"036-037", "imgs":"Eng_2Exp_24000Stroke_14000H24000L_Prim_from_HDwg119-006_HH50972100_89p_Orienta.jpg", "usedby":"<span title=\"header=[] body=[<b>#89p Orienta (1882)<br>Steam Yacht built for Jabez A. Bostwick; designed by NGH; LOA&nbsp;126ft&nbsp;0in<\/b><img src='..\/Images_Vessels\/w250px\/P00089_Orienta_Cozzens.jpg'>] \"><a href=\"..\/Docs\/P00089_Orienta.htm\">#89p<\/a><\/span> Orienta, <span title=\"header=[] body=[<b>#91p Mary {Machinery & lines only} (1882)<br>Steam Engine Only built for Crockett E. McElroy; designed by NGH; LOA&nbsp;133ft<\/b>] \"><a href=\"..\/Docs\/P00091_Mary_Machinery_and_lines_only.htm\">#91p<\/a><\/span> Mary [Machinery & lines only]", "collection1":"", "note":"\"Diam. of High. Pres. Cyl. 14in.; Diam. of Low Pres. Cyl. 24in.; Stroke 24in.; Max. Rev. per Min. 164; Max. Steam Pres. per Sq. Inch. 120lbs.; Max. Horse Power 370. [Fitted] with feed and air pumps, with or without regulators. Brass casing to cylinders. [Has] variable cut-off valve.\" (Source: Herreshoff Manufacturing Co. (creator). Data from 'Descriptive List of Compound Condensing Engines for Stationary or Marine Use' on Printed Advertising Leaflet titled 'Herreshoff Manufacturing Company, Bristol, R.I. Sole Manufacturers of the Patent Safety Coil Boiler, Builders of Steam Vessels, Yachts, Launches, Portable, Stationary and Marine Engines, Pumps, Propeller Wheels and Safety Valves'. Herreshoff Marine Museum Collection, Acc. no. 86.228A. HMM Library Rare Books Room (Box 1), Folder [no #]. No date, ca1879??.)\n\n\"[Detailed data and dimensioned sketches of valves titled 'Notes and data from model of [Stephenson Link] Valve Gearing' of 14\" & 24\" bore x 24\" stroke engine.]\" (Source: Herreshoff, N.G. Handwritten notes in Design Book No. 1. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum. January 1 and January 11, 1882.)\n\n\"... The engine of the Orienta is the usual type of compound condensing, with feed and air pumps attached, the cylinders are 14\" and 24\" in diameter, by 24\" in stroke. ... The machinery complete for a yacht 135 feet long [#91p], belonging to C. M. Elroy, has just been completed, the engine is a counterpart of that of the Orienta [#89p], it is 350 H. P., and the boiler, which is the largest of the coil type ever made, has a grate 7 feet in diameter. ...\" (Source: Anon. \"Steam Yacht Building In Rhode Island. The Herreshoff Manufacturing Company And Its Operations.\" The Mechanical Engineer, September 2, 1882, p. 55.)\n\n\"No detail plans for this engine appear to have survived. But the general arrangement plan 119-006 (HH.5.09721) for #89p Orienta depicts a wonderfully artistic rendering. And note that two double pages (45-46) are dedicated to this engine in the book of steam engine casting patterns in the Hart Nautical Collections HH.6.120. It is unclear why this massive engine that was powered by two boilers was exchanged for another Herreshoff engine just a year after it had been built.\" (Source: van der Linde, Claas. May 16, 2025.)", "uei":"2Exp_24000Stroke_14000H24000L_Prim"},
   {"longdesc":"12\" & 21\" bore x 12\" stroke", "supdata":"<b>Double exp.<\/b><br>2 cyl.<br>Prim. engine<br>4275lbs", "firstbuilt":"1883", "lastbuilt":"1885", "unitsbuilt":"2", "primengdwg":"017-001 (HH.5.01317)", "assodwgs":"017-001, 017-002, 017-016, 017-046, 017-005, 017-003, 017-004, 017-006, 017-043, 017-049, 017-050, 017-062, 017-014, 017-030, 036-055, 036-057, 017-015, 036-054, 017-008, 017-009, 017-066, 017-060, 017-042, 017-031, 021-000, 017-025, 017-044, 017-026, 017-038, 017-028, 017-035, 017-054, 017-012, 017-041, 017-065, 017-021, 017-064, 017-053, 016-047, 017-037, 017-047, 017-059, 017-019, 017-039, 017-036, 017-061, 017-011, 017-007, 017-010, 017-018, 017-052, 017-063, 017-067, 017-045, 017-013, 017-033, 017-051, 017-020, 017-057, 017-017, 017-058, 017-032, 017-048, 017-027, 017-040, 017-022, 017-055, 017-023, 017-056, 017-029, 017-034, 017-024, 017-068, 017-069, 036-056, 017-000, 017-000, 017-000, 017-000", "imgs":"", "usedby":"<span title=\"header=[] body=[<b>#100p Permelia {One Hundred} (1883)<br>Steam Yacht built for J. B. Herreshoff {Sold to Mark Hopkins}; designed by NGH; LOA&nbsp;100ft<\/b><img src='..\/Images_Vessels\/w250px\/P00100_Permelia_100.jpg'>] \"><a href=\"..\/Docs\/P00100_Permelia_100.htm\">#100p<\/a><\/span> Permelia, <span title=\"header=[] body=[<b>#118p Stiletto (1885)<br>High Speed Steam Yacht (later Torpedo Boat) built for Herreshoff Mfg. Co.; designed by NGH; LOA&nbsp;94ft&nbsp;0in<\/b><img src='..\/Images_Vessels\/w250px\/P00118_Stiletto_Stebbins_465.jpg'>] \"><a href=\"..\/Docs\/P00118_Stiletto.htm\">#118p<\/a><\/span> Stiletto", "collection1":"", "note":"\"[Detailed data and dimensioned sketches of valve and Stephenson link titled 'Notes and data from model of Valve Gearing' of 12\" & 21\" bore x 12\" stroke engine.]\" (Source: Herreshoff, N.G. Handwritten notes in Design Book No. 1. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum. February 14, 1883.)\n\n\"... The engine is designed to produce the greatest amount of power with the least possible amount of vibration. It is an annular valve inverted compound engine [see NGH's patent 280,311 for annular valves filed on March 12, 1883 and granted on June 26, 1883]. It has two cylinders, one of 12 inches, the other of 21 inches diameter, with 12 inches stroke of piston. With the maximum steam pressure of 150 pounds it will make 450 revolutions per minute, and is capable of working with that high pressure and high number of revolutions with very little wear and very little liability to break down. The space required for it is very much smaller than that occupied by any other engine in use of the same power. The ordinary yacht engines are capable of making only from 175 to 225 revolutions per minute. The essential feature of the engine is in the construction of the cylinder, which consists of one cylinder within the other, with an annular space between in which the valve works. The steam ports, or openings through which the steam enters the inner cylinder, are ranged all around it at the top and bottom, so that the steam pressure is exerted on the piston head from all sides at once, and not as in the engines in use now from only one side. ...\" (Source: Anon. \"The Stiletto's Great Speed. The Principles Upon Which The New Yacht is Built. \" New York Times, June 15, 1885, p. 8.)\n\n\"... The engine ... is a compound, 12 and 21x12, capable of 450 turns per minute. Annular valves are used, cutting off generally at 5\/8. The weight of the engines is 4.275lbs., and they can work up to 450 H. P. Many of the parts are of steel, the shaft being 4in. diameter. ...\" (Source: Anon. \"Stiletto.\" Forest and Stream, July 2, 1885, p. 459.) \n\n\"The engine for #118p Stiletto appears to have been identical to the one for #100p Permelia which had been built two years before. Weight of engine, 4275lbs from government report about Stiletto.\" (Source: van der Linde, Claas. December 29, 2021.)", "uei":"2Exp_12000Stroke_12000H21000L_Prim"},
   {"longdesc":"3 1\/2\" & 6\" bore x 6\" stroke", "supdata":"<b>Double exp.<\/b><br>2 cyl.<br>Prim. engine<br>316lbs", "firstbuilt":"1884", "lastbuilt":"1896", "unitsbuilt":"13", "primengdwg":"", "assodwgs":"014-003, 014-012, 014-006 [013-006], 014-008, 014-013, 014-014, 014-011, 014-009, 014-007 [013-007], 014-010, 014-015, 003-031, 014-016, 014-005, 014-004, 014-017, 014-018, 014-019, 014-020", "imgs":"Eng_2Exp_06000Stroke_03500H06000L_Prim_Rough_and_Tumble_Museum_1961_07_Steamboats_and_Modern_Steam_Launches_p28.jpg, Eng_2Exp_06000Stroke_03500H06000L_Prim_from_HDwg003-035_HH50017500_117p_Launch_for_St_Y_Electra_a.jpg, Eng_2Exp_06000Stroke_03500H06000L_Prim_from_HDwg003-035_HH50017500_117p_Launch_for_St_Y_Electra_b.jpg", "usedby":"<span title=\"header=[] body=[<b>#114p {Whale Boat for U.S.C.S. Patterson} (1884)<br>Steam Whale Boat built for U.S. Coast Survey; designed by NGH; LOA&nbsp;28ft<\/b>] \"><a href=\"..\/Docs\/P00114_Whale_boat_for_USCS_Patterson.htm\">#114p<\/a><\/span> [Whale boat for U.S.C.S. Patterson], <span title=\"header=[] body=[<b>#116p {Machinery only for U.S. Navy} (1884)<br>Steam Engine Only built for U.S. Navy<\/b>] \"><a href=\"..\/Docs\/P00116_Machinery_only_for_US_Navy.htm\">#116p<\/a><\/span> [Machinery only for U.S. Navy], <span title=\"header=[] body=[<b>#117p {Launch for St. Y. Electra} (1884)<br>Steam Launch built for Elbridge T. Gerry; designed by NGH; LOA&nbsp;27ft<\/b><img src='..\/Images_Vessels\/w250px\/P00117_Launch_for_Electra_probably.jpg'>] \"><a href=\"..\/Docs\/P00117_Launch_for_St_Y_Electra.htm\">#117p<\/a><\/span> [Launch for St. Y. Electra], <span title=\"header=[] body=[<b>#124p {Machinery only for U.S. Navy} (1885)<br>Steam Engine Only built for U.S. Navy<\/b>] \"><a href=\"..\/Docs\/P00124_Machinery_only_for_US_Navy.htm\">#124p<\/a><\/span> [Machinery only for U.S. Navy], <span title=\"header=[] body=[<b>#131p {Whale Boat (for U.S.C.S. Patterson?)} (1885)<br>Steam Whale Boat built for U.S. Coast Survey; designed by NGH; LOA&nbsp;28ft<\/b>] \"><a href=\"..\/Docs\/P00131_Whale_boat_for_USCS_Patterson.htm\">#131p<\/a><\/span> [Whale boat for U.S.C.S. Patterson], <span title=\"header=[] body=[<b>#134p {Launch for St. Y. Peerless} (1886)<br>Steam Launch built for William Cramp & Sons; designed by NGH; LOA&nbsp;27ft<\/b>] \"><a href=\"..\/Docs\/P00134_Launch_for_St_Y_Peerless.htm\">#134p<\/a><\/span> [Launch for St. Y. Peerless], <span title=\"header=[] body=[<b>#136p {Launch for St. Y. Atalanta} (1886)<br>Steam Launch built for Jay Gould; designed by NGH; LOA&nbsp;27ft<\/b>] \"><a href=\"..\/Docs\/P00136_Launch_for_St_Y_Atalanta.htm\">#136p<\/a><\/span> [Launch for St. Y. Atalanta], <span title=\"header=[] body=[<b>#138p {Launch for J. E. Ward} (1887)<br>Steam Launch built for J{ames} E. Ward; designed by NGH; LOA&nbsp;27ft<\/b>] \"><a href=\"..\/Docs\/P00138_Launch_for_J_E_Ward.htm\">#138p<\/a><\/span> [Launch for J. E. Ward], <span title=\"header=[] body=[<b>#141p {Machinery only for U.S.N. Thetis} (1887)<br>Steam Engine Only built for U.S. Navy<\/b>] \"><a href=\"..\/Docs\/P00141_Machinery_only_for_USN_Thetis.htm\">#141p<\/a><\/span> [Machinery only for U.S.N. Thetis], <span title=\"header=[] body=[<b>#144p {Machinery only for cutter Portsmouth Navy Yard} (1887)<br>Steam Engine Only built for U.S. Portsmouth Navy Yard; LOA&nbsp;28ft<\/b>] \"><a href=\"..\/Docs\/P00144_Machinery_only_for_cutter_Portsmouth_Navy_Yard.htm\">#144p<\/a><\/span> [Machinery only for cutter Portsmouth Navy Yard], <span title=\"header=[] body=[<b>#165p Katydid (1890)<br>Steam Launch built for E. D. Morgan; designed by NGH; LOA&nbsp;27ft<\/b><img src='..\/Images_Vessels\/w250px\/P00165_Katydid_Morgan_Recollections.jpg'>] \"><a href=\"..\/Docs\/P00165_Katydid.htm\">#165p<\/a><\/span> Katydid, <span title=\"header=[] body=[<b>#176p {Launch for Massachusetts School Ship Enterprise} (1893)<br>Steam Launch built for U.S. Massachusetts School Ship; designed by NGH; LOA&nbsp;28ft<\/b>] \"><a href=\"..\/Docs\/P00176_Launch_for_Massachusetts_school_ship_Enterprise.htm\">#176p<\/a><\/span> [Launch for Massachusetts school ship Enterprise], <span title=\"header=[] body=[<b>#187p Hist {Launch for St. Y. Thespia} (1896)<br>Steam Launch built for David Dows Jr.; LOA&nbsp;27ft<\/b>] \"><a href=\"..\/Docs\/P00187_Hist.htm\">#187p<\/a><\/span> Hist [Launch for St. Y. Thespia]", "collection1":"Rough and Tumble Engineers Historical Association in Kinzers, PA.", "note":"\"[Detailed data and dimensioned sketches of valve titled 'Notes and data from model of [Stephenson Link] Valve Gearing' of 3 1\/2\" & 6\" bore x 6\" stroke engine.]\" (Source: Herreshoff, N.G. Handwritten notes in Design Book No. 1. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum. September 1884.)\n\n\"#70p [Launch for U.S.S. Essex] later received a replacement 3 1\/2\" & 6\" x 6\" engine. The surviving engine is from 1885 and has the Herreshoff running number 129.\" (Source: van der Linde, Claas. July 31, 2021.)", "uei":"2Exp_06000Stroke_03500H06000L_Prim"},
   {"longdesc":"5\" & 9\" bore x 10\" stroke", "supdata":"<b>Double exp.<\/b><br>2 cyl.<br>Prim. engine<br>38h.p.", "firstbuilt":"1879", "lastbuilt":"1884", "unitsbuilt":"2", "primengdwg":"", "assodwgs":"", "imgs":"Eng_2Exp_10000Stroke_05000H09000L_Prim_1880s_ca_HMCo_Photo_HMCo_Photobox_Bray_Collection_crop.jpg, Eng_2Exp_10000Stroke_05000H09000L_Prim_1880s_ca_HMCo_Photo_HMCo_Photobox_Bray_Collection.jpg", "usedby":"<span title=\"header=[] body=[<b>#52p Javelin (1879)<br>Steam Yacht built for U.S. Navy; designed by NGH; LOA&nbsp;54ft&nbsp;3in<\/b><img src='..\/Images_Vessels\/w250px\/P00052_Javelin_a.jpg'>] \"><a href=\"..\/Docs\/P00052_Javelin.htm\">#52p<\/a><\/span> Javelin, <span title=\"header=[] body=[<b>#188401ep {Machinery only for St. Y. Satan} (1884)<br>Steam Engine Only built for N\/A {W. O. Cutter owner in 1884}<\/b><img src='..\/Images_Vessels\/w250px\/EP188401_Satan_Stebbins_00022.jpg'>] \"><a href=\"..\/Docs\/EP188401_Machinery_only.htm\">#188401ep<\/a><\/span> [Machinery only for St. Y. Satan]", "collection1":"", "note":"\"Diam. of High. Pres. Cyl. 5in.; Diam. of Low Pres. Cyl. 9in.; Stroke 10in.; Max. Rev. per Min. 277; Max. Steam Pres. per Sq. Inch. 135lbs.; Max. Horse Power 38. [Fitted] with feed and air pumps, with or without regulators. Brass casing to cylinders.\" (Source: Herreshoff Manufacturing Co. (creator). Data from 'Descriptive List of Compound Condensing Engines for Stationary or Marine Use' on Printed Advertising Leaflet titled 'Herreshoff Manufacturing Company, Bristol, R.I. Sole Manufacturers of the Patent Safety Coil Boiler, Builders of Steam Vessels, Yachts, Launches, Portable, Stationary and Marine Engines, Pumps, Propeller Wheels and Safety Valves'. Herreshoff Marine Museum Collection, Acc. no. 86.228A. HMM Library Rare Books Room (Box 1), Folder [no #]. No date, ca1879??.)\n\n\"A photo of this engine exists and there are plans for a stationary engine of these dimensions. However, plans for a boat engine of these dimensions could not be found.\" (Source: van der Linde, Claas. July 31, 2021.)", "uei":"2Exp_10000Stroke_05000H09000L_Prim"},
   {"longdesc":"4\" & 6 1\/2\" & 10\" bore x 8\" stroke", "supdata":"<b>Triple exp.<\/b><br>3 cyl.<br>Prim. engine<br>46.7h.p.<br>1620lbs", "firstbuilt":"1885", "lastbuilt":"1896", "unitsbuilt":"11", "primengdwg":"", "assodwgs":"015-007, 015-032, 015-030, 015-013, 015-019, 015-028, 015-021, 015-031, 015-018, 015-027, 015-006, 015-014, 015-016, 015-015, 015-037, 015-022, 015-029, 015-024, 015-017, 015-020, 015-025, 015-026, 015-008, 015-011, 015-009, 015-005, 015-012, 015-010, 015-001, 015-023, 015-021", "imgs":"Eng_3Exp_08000Stroke_04000H06500I10000L_Prim_from_HDwg119-020_HH50973800_128p_Launch_for_USS_Chicago_a.jpg, Eng_3Exp_08000Stroke_04000H06500I10000L_Prim_from_HDwg119-020_HH50973800_128p_Launch_for_USS_Chicago_b.jpg, Eng_3Exp_08000Stroke_04000H06500I10000L_Prim_from_HDwg003-040_HH50018000_133p_Henrietta_a.jpg, Eng_3Exp_08000Stroke_04000H06500I10000L_Prim_from_HDwg003-040_HH50018000_133p_Henrietta_b.jpg, Eng_3Exp_08000Stroke_04000H06500I10000L_Prim_from_HDwg003-040_HH50018000_133p_Henrietta_c.jpg", "usedby":"<span title=\"header=[] body=[<b>#128p {Launch for U.S.S. Chicago} (1885)<br>Steam Launch built for Herreshoff Manufacturing Company? {sold to U.S. Navy 1886}; designed by NGH; LOA&nbsp;39ft&nbsp;5.5in<\/b>] \"><a href=\"..\/Docs\/P00128_Ladoga.htm\">#128p<\/a><\/span> [Launch for U.S.S. Chicago], <span title=\"header=[] body=[<b>#133p Henrietta (1886)<br>High Speed Steam Launch built for Norman L. Munro; designed by NGH; LOA&nbsp;48ft<\/b><img src='..\/Images_Vessels\/w250px\/P00133_Henrietta.jpg'>] \"><a href=\"..\/Docs\/P00133_Henrietta.htm\">#133p<\/a><\/span> Henrietta, <span title=\"header=[] body=[<b>#139p Lotus Seeker I (1887)<br>High Speed Steam Launch built for E. R. Holden; designed by NGH; LOA&nbsp;48ft&nbsp;0in<\/b><img src='..\/Images_Vessels\/w250px\/P00139_Imp_ex-Lotus_Seeker_Johnston_161.jpg'>] \"><a href=\"..\/Docs\/P00139_Lotus_Seeker.htm\">#139p<\/a><\/span> Lotus Seeker I, <span title=\"header=[] body=[<b>#148p Our Mary (1888)<br>Passenger Steam Boat built for Norman L. Munro; designed by NGH; LOA&nbsp;65ft<\/b>] \"><a href=\"..\/Docs\/P00148_Our_Mary.htm\">#148p<\/a><\/span> Our Mary, <span title=\"header=[] body=[<b>#149p Jersey Lily (1888)<br>Passenger Steam Boat built for Norman L. Munro; designed by NGH; LOA&nbsp;65ft<\/b><img src='..\/Images_Vessels\/w250px\/P00149_Charlotte_ex-Jersey_Lily_Mott.jpg'>] \"><a href=\"..\/Docs\/P00149_Jersey_Lily.htm\">#149p<\/a><\/span> Jersey Lily, <span title=\"header=[] body=[<b>#153p Madge (1888)<br>High Speed Steam Launch built for James A. and Franklin N. Drake; designed by NGH; LOA&nbsp;48ft<\/b>] \"><a href=\"..\/Docs\/P00153_Madge.htm\">#153p<\/a><\/span> Madge, <span title=\"header=[] body=[<b>#154p Dawn {I} (1889)<br>High Speed Steam Launch built for T. H. Newberry; designed by NGH; LOA&nbsp;48ft<\/b><img src='..\/Images_Vessels\/w250px\/P00154_Dawn.jpg'>] \"><a href=\"..\/Docs\/P00154_Dawn.htm\">#154p<\/a><\/span> Dawn [I], <span title=\"header=[] body=[<b>#156p Antoinette (1889)<br>Steam Launch built for Edward A. Hopkins; designed by NGH; LOA&nbsp;48ft<\/b>] \"><a href=\"..\/Docs\/P00156_Antoinette.htm\">#156p<\/a><\/span> Antoinette, <span title=\"header=[] body=[<b>#157p Aquila (1889)<br>High Speed Steam Launch built for William Randolph Hearst; designed by NGH; LOA&nbsp;48ft<\/b>] \"><a href=\"..\/Docs\/P00157_Aquila.htm\">#157p<\/a><\/span> Aquila, <span title=\"header=[] body=[<b>#166p Missisquoi (1890)<br>High Speed Steam Launch built for W. Seward Webb; designed by NGH; LOA&nbsp;48ft<\/b>] \"><a href=\"..\/Docs\/P00166_Missisquoi.htm\">#166p<\/a><\/span> Missisquoi, <span title=\"header=[] body=[<b>#183p Item (1896)<br>High Speed Steam Launch built for N. G. Herreshoff; designed by NGH; LOA&nbsp;45ft&nbsp;6in<\/b><img src='..\/Images_Vessels\/w250px\/P00183_Item.jpg'>] \"><a href=\"..\/Docs\/P00183_Item.htm\">#183p<\/a><\/span> Item", "collection1":"", "note":"\"[Detailed data and dimensioned sketches of valve titled 'Notes from model of [Stephenson Link] Valve Gearing' of 4\" & 6 1\/2\" & 10\" bore x 8\" stroke engine.]\" (Source: Herreshoff, N.G. Handwritten notes in Design Book No. 1. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum. March 16, 17 and 18, 1885.)\n\n\"Commenced work on new Triple Comp[ounding] Eng[ine] new one Nov[ember] 11 [18]85. ...\" (Source: Anon (C.H.K.). Handwritten note on last page of Casting Book #2. Haffenreffer-Herreshoff Collection, MIT Museum, acc. no. HH.6.120-05.)\n\n\"Under date of Spring 1886 NGH tabulated comparative data for the old 6 & 10 1\/2\" bore x 10\" stroke 41.2hp engine of #79p DIDO with her new 4\" & 6 1\/4\" & 10\" bore x 8\" stroke 46.7hp engine.]\" (Source: van der Linde, Claas. November 1, 2021.)\n\n\"This engine was apparently the first HMCo-built triple steam engine. It was still a straight engine, space-saving and vibration-reducing steeple type engines with their low pressure cylinder on top above the intermediate and high pressure cylinders would come only thirteen years later, in 1898. According to Wikipedia, triple-expansion engines became more common from the 1890s on, as increasing boiler pressures above 150 psi made their extra efficiency worth the extra cost. For marine engines, their better efficiency amounted to reduced fuel consumption, thus greater range or cargo capacity. For other uses, the increased capital cost of a triple-expansion engine was not so commonly worthwhile.\"  (Source: van der Linde, Claas. May 14, 2015.)", "uei":"3Exp_08000Stroke_04000H06500I10000L_Prim"},
   {"longdesc":"7 1\/2\" & 12\" & 19\" bore x 10 1\/2\" stroke", "supdata":"<b>Triple exp.<\/b><br>3 cyl.<br>Prim. engine", "firstbuilt":"1887", "lastbuilt":"1890", "unitsbuilt":"3", "primengdwg":"", "assodwgs":"016-029, 016-032, 016-037, 016-030, 016-033, 016-031, 016-055, 016-054, 016-038, 016-039, 016-043, 016-050, 016-042, 016-047, 016-044, 016-046, 016-051, 016-053, 016-035, 016-040, 016-048, 016-052, 016-057, 016-045, 016-056, 016-049, 016-041, 007-041, 016-060, 016-058, 016-061, 016-062, 016-063, 016-059", "imgs":"Eng_3Exp_10500Stroke_07500H12000I19000L_Prim_from_MRDE11_02230.jpg", "usedby":"<span title=\"header=[] body=[<b>#140p Clara (1887)<br>Steam Yacht built for Charles H. Kellogg; designed by NGH; LOA&nbsp;98ft&nbsp;6in<\/b><img src='..\/Images_Vessels\/w250px\/P00140_Clara_Stebbins_4575.jpg'>] \"><a href=\"..\/Docs\/P00140_Clara.htm\">#140p<\/a><\/span> Clara, <span title=\"header=[] body=[<b>#142p Now Then (1887)<br>Steam Yacht built for Norman L. Munro; designed by NGH; LOA&nbsp;86ft&nbsp;4in<\/b><img src='..\/Images_Vessels\/w250px\/P00142_Now_Then_Stebbins_1506.jpg'>] \"><a href=\"..\/Docs\/P00142_Now_Then.htm\">#142p<\/a><\/span> Now Then, <span title=\"header=[] body=[<b>#162p Judy (1890)<br>Steam Yacht built for Frank T. Howard; designed by NGH; LOA&nbsp;102ft&nbsp;3in<\/b><img src='..\/Images_Vessels\/w250px\/P00162_Judy_Stebbins_4530.jpg'>] \"><a href=\"..\/Docs\/P00162_Judy.htm\">#162p<\/a><\/span> Judy", "collection1":"", "note":"\"[Detailed data titled 'Notes and data of [Stephenson Link] Valve Gearing' of 7 1\/2\" & 12\" & 19\" bore x 10 1\/2\" stroke engine.]\" (Source: Herreshoff, N.G. Handwritten notes in Design Book No. 1. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum. December 10, 1885.)\n\n\"This engine was designed in the fall of 1885 and first built as a replacement engine for #122p Lucille in May 1886 as per a note in the Construction Record.\" (Source: van der Linde, Claas. October 22, 2021.)", "uei":"3Exp_10500Stroke_07500H12000I19000L_Prim"},
   {"longdesc":"11 1\/4\" & 16\" & 22 1\/2\" & 2x22 1\/2\" bore x 15\" stroke", "supdata":"<b>Quadruple exp.<\/b><br>5 cyl.<br>Prim. engine<br>1050h.p.<br>12925lbs", "firstbuilt":"1888", "lastbuilt":"1891", "unitsbuilt":"5", "primengdwg":"019-020 [019-021] (HH.5.01430)", "assodwgs":"019-004, 019-010, 019-011, 019-006, 019-018, 019-005, 019-013, 019-008, 019-012, 019-009, 019-015, 019-007, 019-001, 019-002, 019-003, 019-016, 019-017, 019-019, 019-020 [019-021], 019-022, 019-037, 019-038, 019-042, 019-044, 019-045, 019-048, 019-052, 022-011, 022-012, 019-025, 019-041, 019-030, 019-026, 019-031, 019-045, 019-023, 007-049, 019-032, 019-035, 019-042, 019-027, 019-028, 019-029, 022-014, 023-030, 019-040, 007-052, 019-034, 019-033, 019-014, 019-047, 019-024, 019-026, 019-036, 007-054, 019-020, 019-050, 019-049, 019-053, 019-046, 019-054, 019-055, 019-056, 019-057, 019-051, 019-000, 019-017", "imgs":"Eng_4Exp_15000Stroke_11250H16000I22500I22500L22500L_Prim_Cushing_engine_SMU_MSS0068_8a_10.jpg, Eng_4Exp_15000Stroke_11250H16000I22500I22500L22500L_Prim_Cushing_engine_SMU_MSS0068_8a_09.jpg, Eng_4Exp_15000Stroke_11250H16000I22500I22500L22500L_Prim_HMM_1989-117-001.jpg", "usedby":"<span title=\"header=[] body=[<b>#150p Say When (1888)<br>Steam Yacht built for Norman L. Munro; designed by NGH; LOA&nbsp;132ft<\/b><img src='..\/Images_Vessels\/w250px\/P00150_Say_When_Stebbins_1927.jpg'>] \"><a href=\"..\/Docs\/P00150_Say_When.htm\">#150p<\/a><\/span> Say When, <span title=\"header=[] body=[<b>#151p Ballymena (1888)<br>Steam Yacht built for George S. Brown; designed by NGH; LOA&nbsp;148ft&nbsp;0in<\/b><img src='..\/Images_Vessels\/w250px\/P00151_Ballymena_Johnston_456a.jpg'>] \"><a href=\"..\/Docs\/P00151_Ballymena.htm\">#151p<\/a><\/span> Ballymena, <span title=\"header=[] body=[<b>#152p Cushing (1890)<br>Navy Steam Torpedo Boat built for U.S. Navy; designed by NGH; LOA&nbsp;140ft<\/b><img src='..\/Images_Vessels\/w250px\/P00152_Cushing.jpg'>] \"><a href=\"..\/Docs\/P00152_Cushing.htm\">#152p<\/a><\/span> Cushing, <span title=\"header=[] body=[<b>#168p Vamoose (1891)<br>High Speed Steam Yacht built for William Randolph Hearst; designed by NGH; LOA&nbsp;112ft&nbsp;6in<\/b><img src='..\/Images_Vessels\/w250px\/P00168_Vamoose_Johnston_467.jpg'>] \"><a href=\"..\/Docs\/P00168_Vamoose.htm\">#168p<\/a><\/span> Vamoose", "collection1":"", "note":"\"Marine Engine of Open Type. 11 1\/4 & 16 & 22 1\/2 & 2x22.5 x 15, 430[rpm], 1050[hp].\" (Source: Herreshoff, N. G. Handwritten List of HMCo-Made Steam Engines. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum, MRDED1_00220. Undated, between 1903 and 1918.)\n\n\"This was the only quadruple-expansion steam engine ever designed by NGH. It was a very complicated and thus costly to make engine employing four stages of steam expansions and a double lower pressure cylinder, resulting in five cylinders. It may have been the first engine with diagonal bracing, a system that was used for all[?] later Herreshoff-built triple steam engines.\" (Source: van der Linde, Claas. July 15, 2021.)", "uei":"4Exp_15000Stroke_11250H16000I22500I22500L22500L_Prim"},
   {"longdesc":"10\" & 16\" & 25\" bore x 13 1\/2\" stroke", "supdata":"<b>Triple exp.<\/b><br>3 cyl.<br>Prim. engine<br>820 \/ 810h.p.<br>5000lbs<br>Price $3480", "firstbuilt":"1889", "lastbuilt":"1920", "unitsbuilt":"5", "primengdwg":"103-018 (HH.5.08416)", "assodwgs":"103-005, 103-006, 103-031, 103-007, 103-002, 103-008, 009-039, 103-001, 103-004, 103-009, 103-003, 103-011, 103-013, 103-012, 103-016, 103-017, 103-014, 103-010, 103-000, 103-015, 119-026, 103-028, 103-018, 103-019, 103-024, 103-020, 103-025, 103-023, 103-021, 103-027, 103-022, 103-026, 103-029, 103-030, 104-029, 103-000, 103-000, 103-032, 103-033, 103-034, 103-035, 103-036, 103-037, 050-066, 103-039, 103-038, 103-039, 103-040", "imgs":"Eng_3Exp_13500Stroke_10000H16000I25000L_Prim_Henry_Ford_Museum_Truant_engine_Henry_Ford_Museum_Photo.jpg, Eng_3Exp_13500Stroke_10000H16000I25000L_Prim_Henry_Ford_Museum_Truant_engine_2012_09_24_HMM_Photo_a.jpg, Eng_3Exp_13500Stroke_10000H16000I25000L_Prim_Henry_Ford_Museum_Truant_engine_2012_09_24_HMM_Photo_b.jpg", "usedby":"<span title=\"header=[] body=[<b>#155p Augusta {III} (1889)<br>Steam Yacht built for I. L. Elwood; designed by NGH; LOA&nbsp;131ft<\/b><img src='..\/Images_Vessels\/w250px\/P00155_Toinette_ex-Augusta_III_Stebbins_4346.jpg'>] \"><a href=\"..\/Docs\/P00155_Augusta.htm\">#155p<\/a><\/span> Augusta [III], <span title=\"header=[] body=[<b>#172p Truant (1892)<br>Steam Yacht built for Helen H. Newberry; designed by NGH; LOA&nbsp;131ft&nbsp;4in<\/b><img src='..\/Images_Vessels\/w250px\/P00172_Truant_Mott.jpg'>] \"><a href=\"..\/Docs\/P00172_Truant.htm\">#172p<\/a><\/span> Truant, <span title=\"header=[] body=[<b>#329p Carola V (1919)<br>Steam Yacht built for Leonard Richards; designed by NGH; LOA&nbsp;114ft<\/b><img src='..\/Images_Vessels\/w250px\/P00329_Carola.jpg'>] \"><a href=\"..\/Docs\/P00329_Carola.htm\">#329p<\/a><\/span> Carola, <span title=\"header=[] body=[<b>#374p Alert (1920)<br>Steam Yacht built for Charles A. Stone; designed by ASdeWH dir. by NGH; LOA&nbsp;140ft&nbsp;3in<\/b><img src='..\/Images_Vessels\/w250px\/P00374_Alert_Trial_3.jpg'>] \"><a href=\"..\/Docs\/P00374_Alert.htm\">#374p<\/a><\/span> Alert", "collection1":"Henry Ford Museum (from Truant).", "note":"\"Marine Engine of Open Type. 10 & 16 & 25 x 13 1\/2, 460[rpm], 810[hp].\" (Source: Herreshoff, N. G. Handwritten List of HMCo-Made Steam Engines. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum, MRDED1_00220. Undated, between 1903 and 1918.)\n\n\"The steam engine for Truant is in the collection of the Henry Ford Museum as Object ID 36.470.1.\" (Source: van der Linde, Claas. May 18, 2015.)\n\n\"Price from undated (1903 or later) diagram by N. G. Herreshoff titled 'Marine Engine. Weights and Prices' in the Halsey C. Herreshoff Collection at the Herreshoff Marine Museum.\" (Source: van der Linde, Claas. March 24, 2019.)\n\n\"10 & 16 & 25 x 13 1.2 at 240 rev[olutions per minute] & 210lbs steam [pressure] \u2026 340h.p. ... Orienta [#89p], Aug[ust] 27, [18]90. [Apparently such an engine was contemplated for Orienta.]\" (Source: Herreshoff, N.G. Penciled note dated August 27, 1890 laid in to Design Book No. 2. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum. August 27, 1890.)", "uei":"3Exp_13500Stroke_10000H16000I25000L_Prim"},
   {"longdesc":"5 5\/8\" & 9\" & 14\" bore x 9\" stroke", "supdata":"<b>Triple exp.<\/b><br>3 cyl.<br>Prim. engine<br>225h.p.<br>1936lbs<br>Price $1920", "firstbuilt":"1890", "lastbuilt":"1904", "unitsbuilt":"7", "primengdwg":"099-010 (HH.5.08207)", "assodwgs":"015-033, 099-001, 099-004, 099-005, 099-006, 099-007, 099-008, 015-034, 099-003, 099-009, 099-016, 099-011, 099-015, 015-035, 099-017, 099-013, 099-010, 099-014, 015-004, 099-002, 099-021, 099-018, 099-019, 099-020, 099-022, 099-000, 099-000, 099-012, 099-028, 099-025, 099-024, 099-026, 100-007, 054-053, 043-025, 043-030, 099-027, 100-029", "imgs":"Eng_3Exp_09000Stroke_05625H09000I14000L_Prim_from_HDwg119-028_HH50974600_163p_Katrina_I_a.jpg, Eng_3Exp_09000Stroke_05625H09000I14000L_Prim_from_HDwg119-028_HH50974600_163p_Katrina_I_b.jpg, Eng_3Exp_09000Stroke_05625H09000I14000L_Prim_from_HDwg119-028_HH50974600_163p_Katrina_I_c.jpg", "usedby":"<span title=\"header=[] body=[<b>#163p Katrina I (1890)<br>High Speed Steam Yacht built for Herreshoff Mfg. Co Stock {Charles L. Hubbard}; designed by NGH; LOA&nbsp;72ft&nbsp;10in<\/b><img src='..\/Images_Vessels\/w250px\/P00163_Katrina_leaving_dock_b.jpg'>] \"><a href=\"..\/Docs\/P00163_Katrina.htm\">#163p<\/a><\/span> Katrina I, <span title=\"header=[] body=[<b>#171p Lotus Seeker II (1892)<br>High Speed Steam Yacht built for E. R. Holden; designed by NGH; LOA&nbsp;72ft&nbsp;10in<\/b><img src='..\/Images_Vessels\/w250px\/P00171_Lotus_Seeker.jpg'>] \"><a href=\"..\/Docs\/P00171_Lotus_Seeker.htm\">#171p<\/a><\/span> Lotus Seeker II, <span title=\"header=[] body=[<b>#173p Kalolah {Kaloola} (1893)<br>Steam Yacht built for Herreshoff Mfg. Co Stock {Charles L. Hubbard}; designed by NGH; LOA&nbsp;91ft&nbsp;3in<\/b><img src='..\/Images_Vessels\/w250px\/P00173_Kalolah.jpg'>] \"><a href=\"..\/Docs\/P00173_Kalolah.htm\">#173p<\/a><\/span> Kalolah, <span title=\"header=[] body=[<b>#175p Louise (1893)<br>Steam Yacht built for Charles H. Hayden; designed by NGH; LOA&nbsp;102ft<\/b>] \"><a href=\"..\/Docs\/P00175_Louise.htm\">#175p<\/a><\/span> Louise, <span title=\"header=[] body=[<b>#188p Squib (1898)<br>High Speed Steam Launch built for N. G. Herreshoff; designed by NGH; LOA&nbsp;78ft<\/b><img src='..\/Images_Vessels\/w250px\/P00188_Squib.jpg'>] \"><a href=\"..\/Docs\/P00188_Squib.htm\">#188p<\/a><\/span> Squib, <span title=\"header=[] body=[<b>#244p Little Sovereign (1904)<br>High Speed Steam Yacht built for Matthew C. D. Borden; designed by NGH; LOA&nbsp;111ft&nbsp;10in<\/b><img src='..\/Images_Vessels\/w250px\/P00244_Sioux_ex-Little_Sovereign_Mercier.jpg'>] \"><a href=\"..\/Docs\/P00244_Little_Sovereign.htm\">#244p<\/a><\/span> Little Sovereign", "collection1":"", "note":"\"Marine Engine of Open Type. 5 5\/8 & 9 & 14 x 9, 600[rpm], 225[hp].\" (Source: Herreshoff, N. G. Handwritten List of HMCo-Made Steam Engines. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum, MRDED1_00220. Undated, between 1903 and 1918.)\n\n\"Price from undated (1903 or later) diagram by N. G. Herreshoff titled 'Marine Engine. Weights and Prices' in the Halsey C. Herreshoff Collection at the Herreshoff Marine Museum.\" (Source: van der Linde, Claas. March 24, 2019.)", "uei":"3Exp_09000Stroke_05625H09000I14000L_Prim"},
   {"longdesc":"9\" & 14\" & 22 1\/2\" bore x 12\" stroke", "supdata":"<b>Triple exp.<\/b><br>3 cyl.<br>Prim. engine<br>600h.p.<br>5425 \/ 4100lbs<br>Price $3480", "firstbuilt":"1891", "lastbuilt":"1918", "unitsbuilt":"11", "primengdwg":"102-014 (HH.5.08374)", "assodwgs":"102-015, 102-012, 102-004, 102-005, 102-016, 102-002, 102-006, 102-010, 102-001, 102-007, 102-008, 102-013, 102-017, 102-009, 102-019, 102-020, 102-014, 102-018, 102-025, 102-023, 102-024, 102-003, 102-021, 009-028, 102-028, 102-029, 102-030, 102-031, 102-032, 102-035, 102-033, 102-034, 102-036, 102-037, 102-011, 102-010 A, 102-000", "imgs":"Eng_3Exp_12000Stroke_09000H14000I22500L_Prim_from_HDwg119-029_HH50974700_164p_Javelin_a.jpg, Eng_3Exp_12000Stroke_09000H14000I22500L_Prim_from_HDwg119-029_HH50974700_164p_Javelin_b.jpg, Eng_3Exp_12000Stroke_09000H14000I22500L_Prim_from_HDwg119-029_HH50974700_164p_Javelin_c.jpg, Eng_3Exp_12000Stroke_09000H14000I22500L_Prim_from_HDwg001-059_HH50048200_306p_SP-1841_a.jpg, Eng_3Exp_12000Stroke_09000H14000I22500L_Prim_from_HDwg001-059_HH50048200_306p_SP-1841_b.jpg", "usedby":"<span title=\"header=[] body=[<b>#164p Javelin (1891)<br>High Speed Steam Yacht built for E. D. Morgan {William Randolph Hearst}; designed by NGH; LOA&nbsp;98ft<\/b><img src='..\/Images_Vessels\/w250px\/P00164_Javelin_Johnston_440.jpg'>] \"><a href=\"..\/Docs\/P00164_Javelin.htm\">#164p<\/a><\/span> Javelin, <span title=\"header=[] body=[<b>#181p Duquesne (1895)<br>Steam Yacht built for Theodore R. Hostetter; designed by NGH; LOA&nbsp;132ft<\/b><img src='..\/Images_Vessels\/w250px\/P00181_Duquesne_Stebbins_5693.jpg'>] \"><a href=\"..\/Docs\/P00181_Duquesne.htm\">#181p<\/a><\/span> Duquesne, <span title=\"header=[] body=[<b>#230p Wana (1903)<br>Steam Yacht built for Selah R. Van Duzer; designed by NGH; LOA&nbsp;132ft&nbsp;3in<\/b><img src='..\/Images_Vessels\/w250px\/P00230_Wana.jpg'>] \"><a href=\"..\/Docs\/P00230_Wana.htm\">#230p<\/a><\/span> Wana, <span title=\"header=[] body=[<b>#323p SP-2840 {Herreshoff #323} (1918)<br>Navy Steam Patrol Boat built for J. P. Morgan {for U.S. Navy}; designed by NGH & Swasey, A. Loring; LOA&nbsp;112ft&nbsp;9in<\/b>] \"><a href=\"..\/Docs\/P00323_SP-2840.htm\">#323p<\/a><\/span> SP-2840, <span title=\"header=[] body=[<b>#306p SP-1841 {Herreshoff #306} (1917)<br>Navy Steam Patrol Boat built for H. J. DuPont {for U.S. Navy}; designed by NGH & Swasey, A. Loring; LOA&nbsp;112ft&nbsp;5in<\/b><img src='..\/Images_Vessels\/w250px\/P00306_SP1841.jpg'>] \"><a href=\"..\/Docs\/P00306_SP-1841.htm\">#306p<\/a><\/span> SP-1841, <span title=\"header=[] body=[<b>#308p SP-2232 {Herreshoff #308} (1917)<br>Navy Steam Patrol Boat built for Robert E. Tod {for U.S. Navy}; designed by NGH & Swasey, A. Loring; LOA&nbsp;112ft&nbsp;9in<\/b>] \"><a href=\"..\/Docs\/P00308_SP-2232.htm\">#308p<\/a><\/span> SP-2232, <span title=\"header=[] body=[<b>#321p SP-2235 {Herreshoff #321} (1917)<br>Navy Steam Patrol Boat built for Payne Whitney {for U.S. Navy}; designed by NGH & Swasey, A. Loring; LOA&nbsp;112ft&nbsp;9in<\/b><img src='..\/Images_Vessels\/w250px\/P00321_SP2235.jpg'>] \"><a href=\"..\/Docs\/P00321_SP-2235.htm\">#321p<\/a><\/span> SP-2235", "collection1":"", "note":"\"Marine Engine of Open Type. 9 & 14 & 22 1\/2 x 12, 500[rpm], 600[hp].\" (Source: Herreshoff, N. G. Handwritten List of HMCo-Made Steam Engines. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum, MRDED1_00220. Undated, between 1903 and 1918.)\n\n\"Price from undated (1903 or later) diagram by N. G. Herreshoff titled 'Marine Engine. Weights and Prices' in the Halsey C. Herreshoff Collection at the Herreshoff Marine Museum.\" (Source: van der Linde, Claas. March 24, 2019.)\n\n\"A new version of this engine with oil casing was built in 1917. See plan 102-034.\" (Source: van der Linde, Claas. July 15, 2021.)", "uei":"3Exp_12000Stroke_09000H14000I22500L_Prim"},
   {"longdesc":"2 1\/2\" bore x 3 1\/2\" stroke", "supdata":"<b>Simple exp.<\/b><br>1 cyl.<br>Prim. engine", "firstbuilt":"1891", "lastbuilt":"1891", "unitsbuilt":"1", "primengdwg":"", "assodwgs":"013-020, 013-028, 013-029, 013-027, 013-030, 013-026", "imgs":"Eng_1Exp_03500Stroke_02500H_Prim_HMM_1970s_ca_Marine_Museum_Fall_River_Photo.jpg, Eng_1Exp_03500Stroke_02500H_Prim_HMM_2012_06_30_van_der_Linde_Photo_a.jpg, Eng_1Exp_03500Stroke_02500H_Prim_HMM_2012_06_30_van_der_Linde_Photo_b.jpg, Eng_1Exp_03500Stroke_02500H_Prim_HMM_2018_10_27_van_der_Linde_Photo_c.jpg", "usedby":"<span title=\"header=[] body=[<b>#169p Kid (1891)<br>Steam Launch built for W. Seward Webb {N. G. Herreshoff}; designed by NGH; LOA&nbsp;22ft<\/b>] \"><a href=\"..\/Docs\/P00169_Kid.htm\">#169p<\/a><\/span> Kid", "collection1":"Herreshoff Marine Museum (from Kid).", "note":"\"[This engine was donated to HMM in 1977 by Henry Luther and Mrs Wirth Munroe.]\" (Source: Anon. \"Herreshoff Mueseum Dedicated.\" Bristol Phoenix, August 18, 1977, p. 4.)\n\n\"[About Kid's steam engine:] This exquisite 1893 power plant is Herreshoff through and through. The stressing of parts is so precise (unusual in steam launch design) that the machinery appears spindly, even frail. The very long connecting rod is a Herreshoff trademark, and the high finish of the boiler is matched by its light weight. Locating the engines cylinder inside the boiler's steam drum results in compact dimensions and measurably improved thermal efficiency. (The spoked flywheel is extraneous, representing the size and weight of a boats propeller.)\nNathanael Herreshoff designed the unit, Herreshoff engine #543, for use in his own light 22-foot launch. ... Originally fired with kerosene, the boiler was later converted for solid fuel firing from either side. Henry M. Luther most recently owned the plant and loaned it to the (Massachusetts) Fall River Marine Museum for public display. (Drawings from the Hart Nautical Museum, M.I.T.) [The engine subsequently became part of the collection of the Herreshoff Marine Museum.]\" (Source: Mitchell, Richard M. \"The Steam Launch.\" Camden, Maine, 1982, p. 261.)\n\n\"An engine with the same basic cylinder and stroke dimensions was advertised by HMCo in ca1879 but must have been a vastly different engine with identical basic dimensions.\" (Source: van der Linde, Claas. July 31, 2021.)", "uei":"1Exp_03500Stroke_02500H_Prim"},
   {"longdesc":"4 1\/2\" & 7\" & 11 1\/4\" bore x 7\" stroke", "supdata":"<b>Triple exp.<\/b><br>3 cyl.<br>Prim. engine<br>115 \/ 120h.p.<br>1000 \/ 1080lbs<br>Price $1080", "firstbuilt":"1893", "lastbuilt":"1904", "unitsbuilt":"5", "primengdwg":"098-023 (HH.5.08192)", "assodwgs":"098-007, 098-010, 098-002, 098-009, 098-011, 098-013, 098-005, 098-003, 098-001, 098-004, 098-006, 098-008, 098-020, 098-016, 098-014, 098-019, 098-023, 098-018, 098-015, 098-017, 098-026, 098-027, 098-021, 098-024, 098-025, 098-028", "imgs":"Eng_3Exp_07000Stroke_04500H07000I11250L_Prim_HMM_2012_06_30_van_der_Linde_Photo.jpg, Eng_3Exp_07000Stroke_04500H07000I11250L_Prim_HMM_2014_06_25_van_der_Linde_Photo.jpg, Eng_3Exp_07000Stroke_04500H07000I11250L_Prim_HMM_2018_10_27_van_der_Linde_Photo_a.jpg, Eng_3Exp_07000Stroke_04500H07000I11250L_Prim_HMM_2018_10_27_van_der_Linde_Photo_b.jpg, Eng_3Exp_07000Stroke_04500H07000I11250L_Prim_HMM_2018_10_27_van_der_Linde_Photo_c.jpg, Eng_3Exp_07000Stroke_04500H07000I11250L_Prim_HMM_2018_10_27_van_der_Linde_Photo_d.jpg, Eng_3Exp_07000Stroke_04500H07000I11250L_Prim_HMM_2018_10_27_van_der_Linde_Photo_e.jpg", "usedby":"<span title=\"header=[] body=[<b>#177p Vanish (1893)<br>High Speed Steam Launch built for J{ohn} A{bel} Aspinwall; designed by NGH; LOA&nbsp;48ft&nbsp;0in<\/b><img src='..\/Images_Vessels\/w250px\/P00177_Vanish_Morgan_Recollections.jpg'>] \"><a href=\"..\/Docs\/P00177_Vanish.htm\">#177p<\/a><\/span> Vanish, <span title=\"header=[] body=[<b>#178p Eugenia I (1894)<br>Steam Yacht built for J. B. Herreshoff; designed by NGH; LOA&nbsp;72ft&nbsp;6in<\/b><img src='..\/Images_Vessels\/w250px\/P00178_Marjorie_ex-Eugenia_I_HMM_Chronicle.jpg'>] \"><a href=\"..\/Docs\/P00178_Eugenia_I.htm\">#178p<\/a><\/span> Eugenia I, <span title=\"header=[] body=[<b>#182p Eugenia II (1895)<br>Steam Yacht built for J. B. Herreshoff; designed by NGH; LOA&nbsp;85ft<\/b><img src='..\/Images_Vessels\/w250px\/P00182_Polyanthus_ex-Eugenia_II_Stebbins_10272.jpg'>] \"><a href=\"..\/Docs\/P00182_Eugenia_II.htm\">#182p<\/a><\/span> Eugenia II, <span title=\"header=[] body=[<b>#186p Vacuna (1896)<br>Steam Yacht built for Selah R. Van Duzer; designed by NGH; LOA&nbsp;85ft<\/b><img src='..\/Images_Vessels\/w250px\/P00188_Vacuna_Huronia_Museum.jpg'>] \"><a href=\"..\/Docs\/P00186_Vacuna.htm\">#186p<\/a><\/span> Vacuna, <span title=\"header=[] body=[<b>#243p Swiftsure (1904)<br>High Speed Steam Launch built for N. G. Herreshoff; designed by NGH; LOA&nbsp;51ft&nbsp;8in<\/b><img src='..\/Images_Vessels\/w250px\/P00243_Swiftsure.jpg'>] \"><a href=\"..\/Docs\/P00243_Swiftsure.htm\">#243p<\/a><\/span> Swiftsure", "collection1":"Herreshoff Marine Museum (possibly from Swiftsure).", "note":"\"Marine Engine of Open Type. 4 1\/2 & 7 & 11 1\/4 x 7, 700[rpm], 120[hp].\" (Source: Herreshoff, N. G. Handwritten List of HMCo-Made Steam Engines. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum, MRDED1_00220. Undated, between 1903 and 1918.)\n\n\"One might speculate that this engine was initially installed in Swiftsure of 1904, which was fitted in 1908 with a 55HP Stilson internal combustion engine.\" (Source: van der Linde, Claas. May 18, 2015.)\n\n\"Price from undated (1903 or later) diagram by N. G. Herreshoff titled 'Marine Engine. Weights and Prices' in the Halsey C. Herreshoff Collection at the Herreshoff Marine Museum.\" (Source: van der Linde, Claas. March 24, 2019.)\n\n\"#120p Polly was fitted with this type of engine in April 1899 as per a note in the Construction Record.\" (Source: van der Linde, Claas. December 28, 2021.)", "uei":"3Exp_07000Stroke_04500H07000I11250L_Prim"},
   {"longdesc":"7\" & 11 1\/4\" & 18\" bore x 10\" stroke", "supdata":"<b>Triple exp.<\/b><br>3 cyl.<br>Prim. engine<br>365h.p.<br>2780lbs<br>Price $2780", "firstbuilt":"1894", "lastbuilt":"1917", "unitsbuilt":"6", "primengdwg":"101-019 (HH.5.08337)", "assodwgs":"101-011, 101-013, 101-007, 101-009, 101-002, 101-004, 101-028, 101-005, 101-006, 101-001, 101-010, 101-008, 101-000, 101-012, 101-003, 101-018, 101-016, 101-014, 101-015, 101-017, 101-019, 101-000, 101-024, 101-029, 101-030, 101-031, 101-037, 101-032, 101-033, 101-034, 101-035, 101-036, 101-038, 101-039", "imgs":"", "usedby":"<span title=\"header=[] body=[<b>#179p Neckan (1894)<br>Steam Yacht built for Hartley C. Baxter; designed by NGH; LOA&nbsp;108ft&nbsp;9in<\/b><img src='..\/Images_Vessels\/w250px\/P00179_Neckan.jpg'>] \"><a href=\"..\/Docs\/P00179_Neckan.htm\">#179p<\/a><\/span> Neckan, <span title=\"header=[] body=[<b>#249p Sisilina {Siselena} (1906)<br>Steam Yacht built for Nathan Strauss; designed by NGH; LOA&nbsp;95ft&nbsp;0in<\/b><img src='..\/Images_Vessels\/w250px\/P00249_Shuttle_ex-Sisilina.jpg'>] \"><a href=\"..\/Docs\/P00249_Sisilina.htm\">#249p<\/a><\/span> Sisilina, <span title=\"header=[] body=[<b>#309p SP-1218 {Herreshoff #309} (1917)<br>Navy Steam Patrol Boat built for Winthrop W. Aldrich, Jr. {for U.S. Navy}; designed by NGH or ASdeWH; LOA&nbsp;83ft&nbsp;2in<\/b><img src='..\/Images_Vessels\/w250px\/P00309_SP1218_NH101788.jpg'>] \"><a href=\"..\/Docs\/P00309_SP-1218.htm\">#309p<\/a><\/span> SP-1218, <span title=\"header=[] body=[<b>#312p Stinger (1917)<br>Navy Steam Patrol Boat built for Richard S. Russell {for U.S. Navy}; designed by NGH or ASdeWH; LOA&nbsp;83ft&nbsp;2in<\/b><img src='..\/Images_Vessels\/w250px\/P00312_Stinger_NH102241.jpg'>] \"><a href=\"..\/Docs\/P00312_Stinger.htm\">#312p<\/a><\/span> Stinger", "collection1":"", "note":"\"Marine Engine of Open Type. 7 & 11 1\/4 & 18 x 10, 560[rpm], 365[hp].\" (Source: Herreshoff, N. G. Handwritten List of HMCo-Made Steam Engines. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum, MRDED1_00220. Undated, between 1903 and 1918.)\n\n\"A 'Herreshoff 250 h. p. triple expansion steam engine, steeple type[sic], cylinders 7 --- 11 1\/4 --- 18, 10 in., stroke' was listed in the 1924 auction catalog when HMCo was auctioned off. This would appear to have been an old engine for #179p Neckan, #249p Sisilina, #309p SP-1218, or #312p Stinger which were the only HMCo-built vessel to be equipped with this type of engine. The steam engine for #309p SP-1218 was reported by the 1925 Lloyd's Register as having been removed and replaced by a Diesel engine. Thus, it is possible that this was one of her engines. Note, however, that the engine for Neckan et al was not a steeple engine.\" (Source: van der Linde, Claas. May 18, 2015.)\n\n\"Price from undated (1903 or later) diagram by N. G. Herreshoff titled 'Marine Engine. Weights and Prices' in the Halsey C. Herreshoff Collection at the Herreshoff Marine Museum.\" (Source: van der Linde, Claas. March 24, 2019.)", "uei":"3Exp_10000Stroke_07000H11250I18000L_Prim"},
   {"longdesc":"18\" & 25\" & 2x28\" bore x 17\" stroke", "supdata":"<b>Triple exp.<\/b><br>4 cyl.<br>Prim. engine", "firstbuilt":"1896", "lastbuilt":"1896", "unitsbuilt":"0", "primengdwg":"041-000 [E] (HH.5.03306)", "assodwgs":"041-000 [E]", "imgs":"", "usedby":"<span title=\"header=[] body=[<b>#189601ep {Unbuilt 30-Knot Torpedo Boat} (1896)<br>Navy Steam Torpedo Boat built for U.S. Navy; designed by NGH; LOA&nbsp;198ft<\/b>] \"><a href=\"..\/Docs\/EP189601_Unbuilt_30kn_Torpedo_Boat.htm\">#189601ep<\/a><\/span> [Unbuilt 30-Knot Torpedo Boat]", "collection1":"", "note":"\"Not built. This was apparently the first four-cylinder triple expansion engine designed by NGH. It was designed to have two stacked low-pressure cylinders and a high-pressure cylinder located above the medium-pressure cylinder. This ingenious but costly and complicated to make engine was very compact and its very short crank and valve shafts as well as counterbalanced pistons were meant to greatly reduce vibrations.\" (Source: van der Linde, Claas. July 31, 2021.)", "uei":"3Exp_17000Stroke_18000H25000I28000L28000L_Prim"},
   {"longdesc":"16\" & 22 1\/2\" & 2x25\" bore x 16\" stroke", "supdata":"<b>Triple exp.<\/b><br>4 cyl.<br>Prim. engine<br>1720h.p.<br>18750lbs", "firstbuilt":"1897", "lastbuilt":"1897", "unitsbuilt":"4", "primengdwg":"105-003 (HH.5.08541)", "assodwgs":"105-008, 105-020, 105-024, 105-001, 105-015, 105-005, 105-007, 105-018, 105-016, 105-017, 105-006, 105-012, 105-010, 105-002, 105-025, 105-013, 105-004, 105-014, 105-009, 105-023, 105-011, 105-021, 105-022, 105-026, 105-019, 041-000, 105-000, 105-003, 105-037, 105-038, 105-040, 105-062, 105-031, 105-034, 105-029, 022-021, 105-030, 105-028, 105-044, 105-058, 105-061, 105-060, 105-033, 105-055, 105-054, 105-056, 050-051, 050-052, 105-051, 105-039, 105-059, 105-057, 105-045, 105-049, 105-052, 105-047, 105-048, 105-032, 105-050, 105-053, 105-041, 105-043, 105-046, 105-036, 105-027, 105-042, 105-065, 105-035, 105-064, 105-063, 041-000", "imgs":"", "usedby":"<span title=\"header=[] body=[<b>#184p Porter (1897)<br>Navy Steam Torpedo Boat built for U.S. Navy; designed by NGH; LOA&nbsp;175ft&nbsp;6in<\/b><img src='..\/Images_Vessels\/w250px\/P00184_Porter_Murat_Halstead.jpg'>] \"><a href=\"..\/Docs\/P00184_Porter.htm\">#184p<\/a><\/span> Porter, <span title=\"header=[] body=[<b>#185p Dupont (1897)<br>Navy Steam Torpedo Boat built for U.S. Navy; designed by NGH; LOA&nbsp;175ft&nbsp;6in<\/b><img src='..\/Images_Vessels\/w250px\/P00185_Dupont_NH63748.jpg'>] \"><a href=\"..\/Docs\/P00185_Dupont.htm\">#185p<\/a><\/span> Dupont", "collection1":"", "note":"\"Inspector's w[ei]gt[h] 18750lbs. NGH.\" (Source: Herreshoff, N.G. Penciled note on HMCo Plan HH.5.08541 (105-003) from January 1896.)\n\n\"Marine Engine of Open Type. 16 & 22 1\/2 & 2x25 x 16, 410[rpm], 1720[hp].\" (Source: Herreshoff, N. G. Handwritten List of HMCo-Made Steam Engines. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum, MRDED1_00220. Undated, between 1903 and 1918.)\n\n\"This was apparently the first four-cylinder triple expansion engine designed by NGH and built by HMCo. It had two stacked low-pressure cylinders and a high-pressure cylinder located above the medium-pressure cylinder. This ingenious but costly and complicated to make engine was very compact and its very short crank and valve shafts as well as counterbalanced pistons greatly reduced vibrations. This engine is described in the March 9, 1897 NGH patent no. 578697 which seeks as its invention a steam engine with perfectly balanced pairs of upper and lower cylinders in order to reduce vibrations and thus allow construction of lighter engines.\" (Source: van der Linde, Claas. May 24, 2019.)", "uei":"3Exp_16000Stroke_16000H22500I25000L25000L_Prim"},
   {"longdesc":"6 1\/4\" & 10\" & 16\" bore x 9\" stroke", "supdata":"<b>Triple exp.<\/b><br>3 cyl.<br>Prim. engine<br>285h.p.<br>2100 \/ 2250lbs<br>Price $2250", "firstbuilt":"1897", "lastbuilt":"1917", "unitsbuilt":"13", "primengdwg":"100-016 (HH.5.08282)", "assodwgs":"100-002, 100-001, 100-005, 100-003, 100-006, 100-004, 100-007, 100-009, 100-020, 100-019, 100-017, 100-008, 100-011, 100-013, 100-010, 100-018, 009-030, 100-012, 100-015, 100-014, 100-016, 100-021, 043-035, 100-022, 100-023, 100-024, 100-026, 100-027, 100-028, 100-030, 100-031, 100-032, 100-033", "imgs":"Eng_3Exp_09000Stroke_06250H10000I16000L_Prim_HMM_2012_06_30_van_der_Linde_Photo_a.jpg, Eng_3Exp_09000Stroke_06250H10000I16000L_Prim_HMM_2018_10_27_van_der_Linde_Photo_b.jpg, Eng_3Exp_09000Stroke_06250H10000I16000L_Prim_HMM_2018_10_27_van_der_Linde_Photo_c.jpg, Eng_3Exp_09000Stroke_06250H10000I16000L_Prim_HMM_2018_10_27_van_der_Linde_Photo_d.jpg, Eng_3Exp_09000Stroke_06250H10000I16000L_Prim_HMM_2018_10_27_van_der_Linde_Photo_e.jpg, Eng_3Exp_09000Stroke_06250H10000I16000L_Prim_HMM_2018_10_27_van_der_Linde_Photo_f.jpg, Eng_3Exp_09000Stroke_06250H10000I16000L_Prim_HMM_2018_10_27_van_der_Linde_Photo_g.jpg, Eng_3Exp_09000Stroke_06250H10000I16000L_Prim_Mystic_Navette_engine_a.jpg, Eng_3Exp_09000Stroke_06250H10000I16000L_Prim_Mystic_Navette_engine_b.jpg, Eng_3Exp_09000Stroke_06250H10000I16000L_Prim_Mystic_Navette_engine_c.jpg, Eng_3Exp_09000Stroke_06250H10000I16000L_Prim_Mystic_Navette_engine_van_der_Linde_photo.jpg, Eng_3Exp_09000Stroke_06250H10000I16000L_Prim_Nina_engine_2015_Tech_Antiques_Photo_a.jpg, Eng_3Exp_09000Stroke_06250H10000I16000L_Prim_Nina_engine_2015_Tech_Antiques_Photo_b.jpg, Eng_3Exp_09000Stroke_06250H10000I16000L_Prim_Nina_engine_2018_Preston_Services_Photo_a.jpg, Eng_3Exp_09000Stroke_06250H10000I16000L_Prim_Nina_engine_2018_Preston_Services_Photo_b.jpg, Eng_3Exp_09000Stroke_06250H10000I16000L_Prim_Nina_engine_2018_Preston_Services_Photo_c.jpg, Eng_3Exp_09000Stroke_06250H10000I16000L_Prim_Nina_engine_2018_Preston_Services_Photo_d.jpg, Eng_3Exp_09000Stroke_06250H10000I16000L_Prim_Nina_engine_2018_Preston_Services_Photo_e.jpg, Eng_3Exp_09000Stroke_06250H10000I16000L_Prim_Said_to_be_Scout_engine_1992_03_20_Connecticut_Day_pC8_C9.jpg", "usedby":"<span title=\"header=[] body=[<b>#193p Nina (1897)<br>Steam Yacht built for Charles G. Emery; designed by NGH; LOA&nbsp;99ft<\/b><img src='..\/Images_Vessels\/w250px\/P00193_Nina_LOC11420.jpg'>] \"><a href=\"..\/Docs\/P00193_Nina.htm\">#193p<\/a><\/span> Nina, <span title=\"header=[] body=[<b>#189p Katrina II (1897)<br>Steam Yacht built for H. F. Noyes; designed by NGH; LOA&nbsp;99ft<\/b><img src='..\/Images_Vessels\/w250px\/S00189p_Katrina_II_Stebbins_14520.jpg'>] \"><a href=\"..\/Docs\/P00189_Katrina.htm\">#189p<\/a><\/span> Katrina II, <span title=\"header=[] body=[<b>#194p Jean (1897)<br>Steam Yacht built for Thomas A. Gillespie; designed by NGH; LOA&nbsp;77ft&nbsp;2in<\/b><img src='..\/Images_Vessels\/w250px\/P00194_Jean_Mercier.jpg'>] \"><a href=\"..\/Docs\/P00194_Jean.htm\">#194p<\/a><\/span> Jean, <span title=\"header=[] body=[<b>#203p Scout {Tender for #529s Mineola} (1900)<br>Steam Yacht Scout Class built for August Belmont; designed by NGH; LOA&nbsp;81ft<\/b><img src='..\/Images_Vessels\/w250px\/P00203_Scout_Docked.jpg'>] \"><a href=\"..\/Docs\/P00203_Scout.htm\">#203p<\/a><\/span> Scout, <span title=\"header=[] body=[<b>#207p Mirage {Tender for #532s Rainbow} (1900)<br>Steam Yacht Scout Class built for Cornelius Vanderbilt III {E. D. Morgan}; designed by NGH; LOA&nbsp;81ft<\/b><img src='..\/Images_Vessels\/w250px\/P00207_Mirage_Stebbins_12854.jpg'>] \"><a href=\"..\/Docs\/P00207_Mirage.htm\">#207p<\/a><\/span> Mirage, <span title=\"header=[] body=[<b>#209p Stroller (1901)<br>Steam Yacht Scout Class built for Gilbert T. Rafferty; designed by NGH; LOA&nbsp;81ft<\/b><img src='..\/Images_Vessels\/w250px\/P00209_Stroller.jpg'>] \"><a href=\"..\/Docs\/P00209_Stroller.htm\">#209p<\/a><\/span> Stroller, <span title=\"header=[] body=[<b>#211p Tramp {Tender for #520s Athene} (1901)<br>Steam Yacht Scout Class built for William O. Gay; designed by NGH; LOA&nbsp;81ft<\/b><img src='..\/Images_Vessels\/w250px\/P00211_Tramp_Stebbins_17131.jpg'>] \"><a href=\"..\/Docs\/P00211_Tramp.htm\">#211p<\/a><\/span> Tramp, <span title=\"header=[] body=[<b>#210p Niagara III (1901)<br>Steam Yacht Scout Class built for Howard Gould; designed by NGH; LOA&nbsp;81ft<\/b><img src='..\/Images_Vessels\/w250px\/P00210_Niagara_III.jpg'>] \"><a href=\"..\/Docs\/P00210_Niagara_III.htm\">#210p<\/a><\/span> Niagara III, <span title=\"header=[] body=[<b>#212p Dawn {II} (1901)<br>Steam Yacht Scout Class built for John S. Newberry; designed by NGH; LOA&nbsp;81ft<\/b><img src='..\/Images_Vessels\/w250px\/P00212_Dawn.jpg'>] \"><a href=\"..\/Docs\/P00212_Dawn.htm\">#212p<\/a><\/span> Dawn [II], <span title=\"header=[] body=[<b>#216p Zinganee {Zingaree} (1902)<br>Steam Yacht Scout Class built for William H. Moore; designed by NGH; LOA&nbsp;81ft<\/b><img src='..\/Images_Vessels\/w250px\/P00216_Zinganee.jpg'>] \"><a href=\"..\/Docs\/P00216_Zinganee_Zingaree.htm\">#216p<\/a><\/span> Zinganee, <span title=\"header=[] body=[<b>#236p Express II (1903)<br>High Speed Steam Yacht built for Morton F. Plant; designed by NGH; LOA&nbsp;89ft&nbsp;3in<\/b><img src='..\/Images_Vessels\/w250px\/P00236_Mermaid_ex-Express_II_Evan_V_Evans.jpg'>] \"><a href=\"..\/Docs\/P00236_Express.htm\">#236p<\/a><\/span> Express, <span title=\"header=[] body=[<b>#303p Navette (1917)<br>High Speed Steam Yacht built for J. Pierpont Morgan; designed by NGH; LOA&nbsp;114ft&nbsp;2in<\/b><img src='..\/Images_Vessels\/w250px\/P00303_Navette.jpg'>] \"><a href=\"..\/Docs\/P00303_Navette.htm\">#303p<\/a><\/span> Navette", "collection1":"Three engines:\n1) Herreshoff Marine Museum (from Navette)\n2) Mystic Seaport Museum (from Navette)\n3) for sale in 2018 in England by Preston Services (from Nina)", "note":"\"Note that an engine said to have been used for Scout was once displayed at Mystic.\" (Source: van der Linde, Claas. March 24, 2019.)\n\n\"Price from undated (1903 or later) diagram by N. G. Herreshoff titled 'Marine Engine. Weights and Prices' in the Halsey C. Herreshoff Collection at the Herreshoff Marine Museum.\" (Source: van der Linde, Claas. March 24, 2019.)", "uei":"3Exp_09000Stroke_06250H10000I16000L_Prim"},
   {"longdesc":"7\" & 10\" & 16\" bore x 9\" stroke", "supdata":"<b>Triple exp.<\/b><br>3 cyl.<br>Prim. engine", "firstbuilt":"1900", "lastbuilt":"1900", "unitsbuilt":"1", "primengdwg":"", "assodwgs":"100-025", "imgs":"", "usedby":"<span title=\"header=[] body=[<b>#206p Iona (1900)<br>Steam Yacht Scout Class built for Capt. Frank R. Rice; designed by NGH; LOA&nbsp;81ft<\/b><img src='..\/Images_Vessels\/w250px\/P00206_Iona_Port_Huron.jpg'>] \"><a href=\"..\/Docs\/P00206_Iona.htm\">#206p<\/a><\/span> Iona", "collection1":"", "note":"\"This engine was used for #206p IONA as per NGH note in Trials Booklet under date of May 19, 1900.\" (Source: van der Linde, Claas. May 5, 2019.)", "uei":"3Exp_09000Stroke_07000H10000I16000L_Prim"},
   {"longdesc":"12 1\/2\" & 18\" & 25\" bore x 13 1\/2\" stroke", "supdata":"<b>Triple exp.<\/b><br>3 cyl.<br>Prim. engine<br>1000h.p.<br>8150 \/ 5600lbs<br>Price $5600", "firstbuilt":"1898", "lastbuilt":"1898", "unitsbuilt":"4", "primengdwg":"104-025 (HH.5.08466)", "assodwgs":"104-006, 104-004, 104-007, 104-005, 104-002, 104-010, 104-001, 104-003, 104-011, 104-012, 104-044, 104-054, 104-020, 104-022, 104-021, 104-014, 104-008, 104-035, 104-009, 104-013, 104-015, 009-040, 104-028, 104-026, 104-036, 104-016, 104-017, 104-019, 104-030, 104-018, 104-031, 104-027, 104-023, 104-040, 104-037, 104-038, 104-039, 104-033, 104-034, 104-025, 104-000, 104-032, 104-045, 104-000", "imgs":"", "usedby":"<span title=\"header=[] body=[<b>#191p Talbot (1898)<br>Navy Steam Torpedo Boat built for U.S. Navy; designed by NGH; LOA&nbsp;100ft<\/b><img src='..\/Images_Vessels\/w250px\/P00191_Talbot.jpg'>] \"><a href=\"..\/Docs\/P00191_Talbot.htm\">#191p<\/a><\/span> Talbot, <span title=\"header=[] body=[<b>#192p Gwin (1898)<br>Navy Steam Torpedo Boat built for U.S. Navy; designed by NGH; LOA&nbsp;100ft<\/b><img src='..\/Images_Vessels\/w250px\/P00192_Gwin_EAG_Smith_1.jpg'>] \"><a href=\"..\/Docs\/P00192_Gwin.htm\">#192p<\/a><\/span> Gwin, <span title=\"header=[] body=[<b>#190p Morris (1898)<br>Navy Steam Torpedo Boat built for U.S. Navy; designed by NGH; LOA&nbsp;139ft&nbsp;6in<\/b><img src='..\/Images_Vessels\/w250px\/P00190_Morris_EAG_Smith.jpg'>] \"><a href=\"..\/Docs\/P00190_Morris.htm\">#190p<\/a><\/span> Morris", "collection1":"", "note":"\"Marine Engine of Open Type. 12 1\/2 & 18 & 25 x 13 1\/2, 460[rpm], 1000[hp]. [Note:] 8425lbs [in pencil].\" (Source: Herreshoff, N. G. Handwritten List of HMCo-Made Steam Engines. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum, MRDED1_00220. Undated, between 1903 and 1918.)\n\n\"Price from undated (1903 or later) diagram by N. G. Herreshoff titled 'Marine Engine. Weights and Prices' in the Halsey C. Herreshoff Collection at the Herreshoff Marine Museum.\" (Source: van der Linde, Claas. March 24, 2019.)", "uei":"3Exp_13500Stroke_12500H18000I25000L_Prim"},
   {"longdesc":"3 1\/2\" & 5\" & 8\" bore x 4 1\/2\" stroke", "supdata":"<b>Triple exp.<\/b><br>3 cyl.<br>Prim. engine<br>48h.p.<br>355 \/ 500lbs<br>Price $500", "firstbuilt":"1898", "lastbuilt":"1915", "unitsbuilt":"27", "primengdwg":"097-011 (HH.5.08134)", "assodwgs":"097-001, 097-007, 097-005, 097-016, 097-002, 097-006, 097-004, 097-010, 097-013, 097-021, 097-014, 097-023, 097-017, 097-018, 097-003, 097-009, 009-032, 097-015, 097-020, 009-033, 097-011, 097-019, 097-008, 097-012, 097-022, 097-024, 097-025", "imgs":"Eng_3Exp_04500Stroke_03500H05000I08000L_Prim_HMM_2012_06_30_van_der_Linde_Photo.jpg, Eng_3Exp_04500Stroke_03500H05000I08000L_Prim_HMM_2015_07_30_Sandy_Lee_Photo_a.jpg, Eng_3Exp_04500Stroke_03500H05000I08000L_Prim_HMM_2015_07_30_Sandy_Lee_Photo_b.jpg, Eng_3Exp_04500Stroke_03500H05000I08000L_Prim_Vapor.jpg, Eng_3Exp_04500Stroke_03500H05000I08000L_Prim_Vapor_Builders_Plate.jpg", "usedby":"<span title=\"header=[] body=[<b>#196p {Tender for U.S.S. Albatross} (1898)<br>Steam Launch built for U.S. Fish Commission; designed by NGH; LOA&nbsp;26ft<\/b>] \"><a href=\"..\/Docs\/P00196_Tender_for_Albatross.htm\">#196p<\/a><\/span> [Tender for U.S.S. Albatross], <span title=\"header=[] body=[<b>#197p {Steam Tender for U.S.C.S. Yankton} (1898)<br>Steam Launch built for U.S. Coast Survey; designed by NGH; LOA&nbsp;26ft<\/b>] \"><a href=\"..\/Docs\/P00197_Steam_Tender_for_USCSS_Yankton.htm\">#197p<\/a><\/span> [Steam Tender for U.S.C.S. Yankton], <span title=\"header=[] body=[<b>#198p {Steam Tender for U.S.C.S. Yankton} (1898)<br>Steam Launch built for U.S. Coast Survey; designed by NGH; LOA&nbsp;26ft<\/b>] \"><a href=\"..\/Docs\/P00198_Steam_Tender_for_USCSS_Yankton.htm\">#198p<\/a><\/span> [Steam Tender for U.S.C.S. Yankton], <span title=\"header=[] body=[<b>#199p {Steam Tender for U.S.C.S. Eagle} (1898)<br>Steam Launch built for U.S. Coast Survey; designed by NGH; LOA&nbsp;28ft<\/b>] \"><a href=\"..\/Docs\/P00199_Steam_Tender_for_USCSS_Eagle.htm\">#199p<\/a><\/span> [Steam Tender for U.S.C.S. Eagle], <span title=\"header=[] body=[<b>#202p {Steam Tender for U.S.C.S. Vixen} (1899)<br>Steam Launch built for U.S. Coast Survey; designed by NGH; LOA&nbsp;30ft<\/b>] \"><a href=\"..\/Docs\/P00202_Steam_Tender_for_USCSS_Vixen.htm\">#202p<\/a><\/span> [Steam Tender for U.S.C.S. Vixen], <span title=\"header=[] body=[<b>#200p {Steam Tender for U.S.C.S. Yosemite} (1899)<br>Steam Launch built for U.S. Coast Survey; designed by NGH; LOA&nbsp;28ft<\/b>] \"><a href=\"..\/Docs\/P00200_Steam_Tender_for_USCSS_Yosemite.htm\">#200p<\/a><\/span> [Steam Tender for U.S.C.S. Yosemite], <span title=\"header=[] body=[<b>#201p {Steam Tender for U.S. Coast Survey} (1899)<br>Steam Launch built for U.S. Government {Dr. Hopkins}; designed by NGH; LOA&nbsp;28ft<\/b><img src='..\/Images_Vessels\/w250px\/P00201_possibly_Steam_Tender_No_328_a.jpg'>] \"><a href=\"..\/Docs\/P00201_Steam_Tender_for_US_Government.htm\">#201p<\/a><\/span> [Steam Tender for U.S. Coast Survey], <span title=\"header=[] body=[<b>#204p {Launch for St. Y. Valiant} (1899)<br>Steam Launch built for W. K. Vanderbilt; designed by NGH; LOA&nbsp;30ft<\/b>] \"><a href=\"..\/Docs\/P00204_Launch_for_St_Y_Valiant.htm\">#204p<\/a><\/span> [Launch for St. Y. Valiant], <span title=\"header=[] body=[<b>#220p Atala (1902)<br>Steam Launch built for H. J. Grosbeck; designed by NGH; LOA&nbsp;28ft&nbsp;0in<\/b>] \"><a href=\"..\/Docs\/P00220_Atala.htm\">#220p<\/a><\/span> Atala, <span title=\"header=[] body=[<b>#214p Isis {Launch for St. Y. Isis} (1902)<br>Steam Launch built for J. B. Webb {W. S. and J. T. Spaulding?}; designed by NGH; LOA&nbsp;26ft&nbsp;0in<\/b>] \"><a href=\"..\/Docs\/P00214_Isis.htm\">#214p<\/a><\/span> Isis, <span title=\"header=[] body=[<b>#227p {Launch for St. Y. Yacona} (1902, Extant)<br>Steam Launch built for Henry Clay Pierce; designed by NGH; LOA&nbsp;30ft<\/b>] \"><a href=\"..\/Docs\/P00227_Vapor.htm\">#227p<\/a><\/span> [Launch for St. Y. Yacona], <span title=\"header=[] body=[<b>#233p Delaware Junior {Launch for St. Y. Delaware} (1903)<br>Steam Launch built for Frederick G. Bourne; designed by NGH; LOA&nbsp;28ft<\/b>] \"><a href=\"..\/Docs\/P00233_Delaware_Junior.htm\">#233p<\/a><\/span> Delaware Junior [Launch for St. Y. Delaware], <span title=\"header=[] body=[<b>#237p North Star II {Launch for St. Y. North Star II} (1903)<br>Steam Launch built for Cornelius Vanderbilt III; designed by NGH; LOA&nbsp;28ft&nbsp;0in<\/b>] \"><a href=\"..\/Docs\/P00237_North_Star_II.htm\">#237p<\/a><\/span> North Star II [Launch for St. Y. North Star II], <span title=\"header=[] body=[<b>#238p {Launch for U.S.S. Eagle} (1903)<br>Steam Launch built for U.S. Navy; designed by NGH; LOA&nbsp;28ft&nbsp;0in<\/b>] \"><a href=\"..\/Docs\/P00238_Launch_for_USN_Eagle.htm\">#238p<\/a><\/span> [Launch for U.S.S. Eagle], <span title=\"header=[] body=[<b>#239p {Launch for U.S.S. Vixen} (1903)<br>Steam Launch built for U.S. Navy; designed by NGH; LOA&nbsp;28ft<\/b>] \"><a href=\"..\/Docs\/P00239_Launch_for_US_Navy.htm\">#239p<\/a><\/span> [Launch for U.S.S. Vixen], <span title=\"header=[] body=[<b>#241p {Launch for St. Y. Haida} (1903)<br>Steam Launch built for M. C. Fleischman; designed by NGH; LOA&nbsp;26ft<\/b>] \"><a href=\"..\/Docs\/P00241_Haida.htm\">#241p<\/a><\/span> [Launch for St. Y. Haida], <span title=\"header=[] body=[<b>#246p {Steam Launch for U.S.S. Yankton} (1904)<br>Steam Launch built for U.S. Navy; designed by NGH; LOA&nbsp;28ft<\/b>] \"><a href=\"..\/Docs\/P00246_Launch_for_US_Navy.htm\">#246p<\/a><\/span> [Steam Launch for U.S.S. Yankton], <span title=\"header=[] body=[<b>#255p Electra Jr. {Launch for St. Y. Electra} (1906)<br>Steam Launch built for Elbridge T. Gerry; designed by NGH; LOA&nbsp;28ft&nbsp;0in<\/b>] \"><a href=\"..\/Docs\/P00255_Electra_Jr.htm\">#255p<\/a><\/span> Electra Jr. [Launch for St. Y. Electra], <span title=\"header=[] body=[<b>#257p {Gannet (? Launch for St. Y. Electra)} (1907)<br>Steam Launch built for Elbridge T. Gerry; designed by NGH; LOA&nbsp;28ft&nbsp;0in<\/b>] \"><a href=\"..\/Docs\/P00257_Launch_for_St_Y_Electra.htm\">#257p<\/a><\/span> [Gannet (? Launch for St. Y. Electra)], <span title=\"header=[] body=[<b>#262p {Launch for St. Y. Iolanda} (1908)<br>Steam Launch built for Morton F. Plant; designed by NGH; LOA&nbsp;28ft&nbsp;0in<\/b>] \"><a href=\"..\/Docs\/P00262_Launch_for_M_F_Plant.htm\">#262p<\/a><\/span> [Launch for St. Y. Iolanda?], <span title=\"header=[] body=[<b>#263p Cassandra Jr. {Launch for St. Y. Cassandra} (1908)<br>Steam Launch built for Roy A. Rainey; designed by NGH; LOA&nbsp;34ft&nbsp;0in<\/b>] \"><a href=\"..\/Docs\/P00263_Cassandra_Jr.htm\">#263p<\/a><\/span> Cassandra Jr., <span title=\"header=[] body=[<b>#270p Wanderer Jr. {Launch for St. Y. Wanderer} (1909)<br>Steam Launch built for H. A. C. Taylor; designed by NGH; LOA&nbsp;27ft&nbsp;11in<\/b><img src='..\/Images_Vessels\/w250px\/P00270_Wanderer_Jr.jpg'>] \"><a href=\"..\/Docs\/P00270_Wanderer_Jr.htm\">#270p<\/a><\/span> Wanderer Jr., <span title=\"header=[] body=[<b>#274p Haulrey Jr. {Launch for St. S. Hatuey \/ Houtrey} (1910)<br>Steam Launch built for Bath Iron Works; designed by NGH; LOA&nbsp;27ft&nbsp;0in<\/b>] \"><a href=\"..\/Docs\/P00274_Haulrey_Jr.htm\">#274p<\/a><\/span> Haulrey Jr., <span title=\"header=[] body=[<b>#275p {Launch for U.S.S. Scorpion} (1910)<br>Steam Launch built for U.S. Navy; designed by NGH; LOA&nbsp;28ft&nbsp;0in<\/b>] \"><a href=\"..\/Docs\/P00275_Launch_for_US_Navy.htm\">#275p<\/a><\/span> [Launch for U.S.S. Scorpion], <span title=\"header=[] body=[<b>#290p {Launch for St. Y. Narada} (1912)<br>Steam Launch built for Henry Walters; LOA&nbsp;26ft&nbsp;0in<\/b><img src='..\/Images_Vessels\/w250px\/P00290_Launch_for_Narada_a.jpg'>] \"><a href=\"..\/Docs\/P00290_Launch_for_Narada.htm\">#290p<\/a><\/span> [Launch for St. Y. Narada], <span title=\"header=[] body=[<b>#294p {Tender for St. Y. Noma} (1914)<br>Steam Launch built for Vincent Astor; designed by NGH; LOA&nbsp;30ft&nbsp;3in<\/b><img src='..\/Images_Vessels\/w250px\/P00294_Tender_for_steam_yacht_Noma_a.jpg'>] \"><a href=\"..\/Docs\/P00294_Tender_for_St_Y_Noma.htm\">#294p<\/a><\/span> [Tender for St. Y. Noma], <span title=\"header=[] body=[<b>#313p {Launch for Carola IV} (1915)<br>Steam Launch built for Leonard Richards; LOA&nbsp;26ft<\/b>] \"><a href=\"..\/Docs\/P00313_Launch_for_Mr_L_Richards.htm\">#313p<\/a><\/span> [Launch for Mr. L. Richards]", "collection1":"Two engines:\n1) Herreshoff Marine Museum (acc. no. TR220)\n2) Herreshoff Marine Museum (from Jon Martin of Costa Mesa, CA as part of #227p Vapor ex-Launch for St. Y. Yacona).\nA replica engine has been built by Chris McMullen in New Zealand.", "note":"\"... Ap[ril] 30 [18]98. W[ei]g[h]t of reciprocating parts on little 3-5&8x4 1\/2 engine now building [for #196p Launch for Albatross: [Data table].\nJune 3 [18]98. W[ei]g[h]t of 3-5&8x4 1\/2 engine complete (without shaft coupling) 319 1\/2lbs. ...[This engine is also mentioned in the same book on p. 77 as a 'new style triple ex[pansion] engine, self-oiling'.]\" (Source: Herreshoff, N.G. Handwritten (in ink and pencil) notes in Design Book No. 3, p. 59. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum. April 30, 1898 to June 13, 1898.)\n\n\"Tests of small engines as to efficiency in use of steam. ... Feb[ruary] 19 [1903]. Trial of 3 1\/2 - 5 & 8 x 4 1\/2\" launch engine bolted to shop dynamo and charging storage batteries. Engine exhausting into temporary condenser and air & feed pump belonging to Roamer used to form vaccuum. ...\" (Source: Herreshoff, N.G. Penciled notes in Design Book No. 4, p. 56. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum. February 19, 1903.)\n\n\"Marine Engine of Inclosed Type. 3 1\/2 & 5 & 8 x 4 1\/2, 825[rpm], 48[hp].\" (Source: Herreshoff, N. G. Handwritten List of HMCo-Made Steam Engines. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum, MRDED1_00220. Undated, between 1903 and 1918.)\n\n\"This engine is the first triple expansion steeple engine designed by NGH. It has its low pressure cylinder above the high pressure and the intermediate pressure cylinders, which allowed a very compact and space-saving engine with very little vibration. This is the 'Herreshoff 30 h. p. steam engine, 3 1\/2\" - 5\" - 8\", 4 1\/2\" stroke' that was listed in the 1924 auction catalog when HMCo was auctioned off (as per a private Email from Michael Rossi to CvdL dated February 8, 2016).\"  (Source: van der Linde, Claas. May 14, 2015.)\n\n\"Price from undated (1903 or later) diagram by N. G. Herreshoff titled 'Marine Engine. Weights and Prices' in the Halsey C. Herreshoff Collection at the Herreshoff Marine Museum.\" (Source: van der Linde, Claas. March 24, 2019.)", "uei":"3Exp_04500Stroke_03500H05000I08000L_Prim"},
   {"longdesc":"5 5\/8\" & 8\" & 12 1\/2\" bore x 7\" stroke", "supdata":"<b>Triple exp.<\/b><br>3 cyl.<br>Prim. engine<br>140h.p.<br>1143 1280lbs<br>Price $1280", "firstbuilt":"1899", "lastbuilt":"1909", "unitsbuilt":"6", "primengdwg":"106-024 (HH.5.08663)", "assodwgs":"106-001, 106-002, 106-004, 106-003, 106-005, 106-006, 106-007, 106-008, 106-009, 106-010, 106-011, 106-012, 106-014, 106-013, 106-016, 106-019, 106-020, 106-021, 106-022, 106-023, 106-024, 106-025, 106-025, 106-025, 106-026, 106-027, 106-015, 106-028, 106-029, 106-030, 106-031, 106-032, 106-033, 106-000, 106-000, 106-000, 106-034, 022-000, 022-044, 022-045, 022-050, 022-051, 049-068, 049-069, 049-071", "imgs":"Eng_3Exp_07000Stroke_05625H08000I12500L_Prim_HMM_2018-077-004_ca1916.jpg", "usedby":"<span title=\"header=[] body=[<b>#205p Eugenia III (1899)<br>Steam Yacht built for J. B. Herreshoff; designed by NGH; LOA&nbsp;95ft<\/b><img src='..\/Images_Vessels\/w250px\/P00205_Empress_ex-Eugenia_III.jpg'>] \"><a href=\"..\/Docs\/P00205_Eugenia_III.htm\">#205p<\/a><\/span> Eugenia III, <span title=\"header=[] body=[<b>#208p Florence (1900)<br>Steam Yacht built for Alphonse H. Alker; designed by NGH; LOA&nbsp;98ft<\/b><img src='..\/Images_Vessels\/w250px\/P00208_Sapphire_ex-Florence.jpg'>] \"><a href=\"..\/Docs\/P00208_Florence.htm\">#208p<\/a><\/span> Florence, <span title=\"header=[] body=[<b>#215p Roamer (1902)<br>Steam Yacht built for N. G. Herreshoff; designed by NGH; LOA&nbsp;94ft<\/b><img src='..\/Images_Vessels\/w250px\/P00215_Roamer_1922_12_02.jpg'>] \"><a href=\"..\/Docs\/P00215_Roamer.htm\">#215p<\/a><\/span> Roamer, <span title=\"header=[] body=[<b>#235p Mist (1903)<br>High Speed Steam Launch built for Edward deV. Morrell; designed by NGH; LOA&nbsp;59ft<\/b><img src='..\/Images_Vessels\/w250px\/P00235_Mist.jpg'>] \"><a href=\"..\/Docs\/P00235_Mist.htm\">#235p<\/a><\/span> Mist, <span title=\"header=[] body=[<b>#229p Sunbeam (1903, Extant)<br>High Speed Steam Launch built for James L. Hutchinson; designed by NGH; LOA&nbsp;58ft&nbsp;8.5in<\/b><img src='..\/Images_Vessels\/w250px\/P00229_Sunbeam.jpg'>] \"><a href=\"..\/Docs\/P00229_Sunbeam.htm\">#229p<\/a><\/span> Sunbeam, <span title=\"header=[] body=[<b>#267p Enaj III (1909)<br>Steam Yacht built for Thomas G. Bennett; designed by NGH; LOA&nbsp;89ft&nbsp;4in<\/b><img src='..\/Images_Vessels\/w250px\/P00267_Enaj.jpg'>] \"><a href=\"..\/Docs\/P00267_Enaj_III.htm\">#267p<\/a><\/span> Enaj III", "collection1":"Private owner on Lake Chautauqua in New York (from Sunbeam) (info from Rolly Evans).", "note":"\"Marine Engine of Inclosed Type. 5 5\/8 & 8 & 12 1\/2 x 7, 615[rpm], 140[hp]. [Note:] 142 [hp in pencil].\" (Source: Herreshoff, N. G. Handwritten List of HMCo-Made Steam Engines. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum, MRDED1_00220. Undated, between 1903 and 1918.)\n\n\"[Roamer] had a triple expansion engine with bores of five and five eighths inches, eight inches, and twelve and one half inches, and seven inches stroke. The engine was of a type he was designing at that time and called a triple expansion steeple engine, having the low pressure cylinder above the high and intermediate cylinders so the engine was very short fore and aft, also remarkably free from vibration. The crankcase was enclosed, and the moving parts lubricated by the splash system as later internal combustion engines were to be.\" (Source: Herreshoff, L. Francis. The Wizard of Bristol. The Life and Achievements of Nathanael Greene Herreshoff, together with An Account of Some of the Yachts He Designed. New York, 1953, p. 119.) \n\n\"A 'Herreshoff triple expansion steam engine, steeple type, cylinders 5 5\/8 --- 8 --- 12 1\/2, 7 in. stroke' was listed in the 1924 auction catalog when HMCo was auctioned off. It is possible that the engine listed in the auction catalog was Roamer's old engine for Roamer had been rebuilt in 1922 and received a new 110hp Winton engine.\" (Source: van der Linde, Claas. May 18, 2015.)\n\n\"Price from undated (1903 or later) diagram by N. G. Herreshoff titled 'Marine Engine. Weights and Prices' in the Halsey C. Herreshoff Collection at the Herreshoff Marine Museum.\" (Source: van der Linde, Claas. March 24, 2019.)\n\n\"A ''Herreshoff triple expansion steam engine, steeple type, cylinders 5 5\/8 --- 8 --- 12 1\/2, 7 in. stroke' was listed in the 1924 auction catalog when HMCo was auctioned off. This appears to have been one of the two 5 5\/8\" & 8\" & 12 1\/2\" bore x 7\" stroke steam engines that were built as job 2947 in 1904 as per a note dated January 7, 1904 on pattern list 106-025  --- together with a 8\" & 12 1\/2\" & 20\" bore x 11\" stroke steam engine and one 7\" & 11 1\/4\" & 18\" bore x 9\" stroke engine. Only one of the two 7\" stroke engines appears to have ever been sold (for use in #267p ENAJ). The other three engines are shown on a group of HMCo photos now in the collection of HMM (numbered 2018-077-001 to 2018-077-004) and believed to have been taken by Tom Brightman in 1916. All three engines were also listed in the 1924 auction catalog.\" (Source: van der Linde, Claas. December 27, 2021.)", "uei":"3Exp_07000Stroke_05625H08000I12500L_Prim"},
   {"longdesc":"8\" & 12 1\/2\" & 20\" bore x 11\" stroke", "supdata":"<b>Triple exp.<\/b><br>3 cyl.<br>Prim. engine<br>470 \/ 400h.p.<br>9076 \/ 3400lbs<br>Price $3240", "firstbuilt":"1902", "lastbuilt":"1902", "unitsbuilt":"2", "primengdwg":"107-035 (HH.5.08719)", "assodwgs":"000-000 [107-000], 000-000 [107-000], 107-001, 107-002, 107-002, 107-005, 000-000 [107-000], 107-003, 107-006, 107-004, 107-007, 107-008, 107-009, 107-010, 107-011, 107-012, 107-013, 107-000, 107-014, 107-015, 107-016, 107-017, 107-018, 107-019, 107-020, 107-021, 107-022, 107-023, 107-024, 107-025, 107-026, 107-027, 107-028, 107-029, 107-030, 107-030, 107-031, 107-032, 107-033, 107-000, 107-033, 107-034, 107-035, 107-036, 107-036, 107-037, 000-000 [107-000], 107-038, 107-039, 107-040, 107-043, 107-041, 107-042, 107-044, 107-045, 107-046, 107-000, 107-047, 107-048, 107-049, 107-050, 000-000 [107-000], 000-000 [107-000], 000-000 [107-000], 107-000", "imgs":"Eng_3Exp_11000Stroke_08000H12500I20000L_Prim_HMM_2018-077-001_left_ca1916.jpg", "usedby":"<span title=\"header=[] body=[<b>#213p Quickstep (1902)<br>Steam Yacht built for Russell & Frederick Grinnell; designed by NGH; LOA&nbsp;124ft<\/b><img src='..\/Images_Vessels\/w250px\/P00213_Florence_ex-Quickstep_Stebbins_16456.jpg'>] \"><a href=\"..\/Docs\/P00213_Quickstep.htm\">#213p<\/a><\/span> Quickstep, <span title=\"header=[] body=[<b>#222p Parthenia {Claudia} (1902)<br>Steam Yacht built for Morton F. Plant; designed by NGH; LOA&nbsp;130ft&nbsp;6in<\/b><img src='..\/Images_Vessels\/w250px\/P00222_Parthenia_Bolles_1878.jpg'>] \"><a href=\"..\/Docs\/P00222_Parthenia.htm\">#222p<\/a><\/span> Parthenia", "collection1":"", "note":"\"[See also:] 1st Pattern for Nichols Chem. Works.\" (Source: Herreshoff, N. G.? Handwritten note on HMCo Plan 107-003 (HH.5.08685) Int. Pressure Cylinder 8\" & 12 1\/2\" & 20\" x 11\"  dated June 14, 1900.)\n\n\"[See also:] 3 Engines ordered for Nichols Chem. Works. Oct. 1900.\" (Source: Herreshoff, N. G.? Handwritten note on HMCo Plan 107-030 (HH.5.08712) Casting List 8\" & 12 1\/2\" & 20\" x 11\"  dated September 24, 1900.)\n\n\"Marine Engine of Inclosed Type. 8 & 12 1\/2 & 20 x 11, 460[rpm], 400[hp]. [Note:] 408 [hp in pencil].\" (Source: Herreshoff, N. G. Handwritten List of HMCo-Made Steam Engines. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum, MRDED1_00220. Undated, between 1903 and 1918.)\n\n\"[See also 'Not Made' engine: Marine Engine of Open Type. 8 & 12 1\/2 & 20 x 11, 525[rpm], 405[hp]. [Note:] not made [in pencil, entire line crossed out].\" (Source: Herreshoff, N. G. Handwritten List of HMCo-Made Steam Engines. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum, MRDED1_00220. Undated, between 1903 and 1918.)\n\n\"Price from undated (1903 or later) diagram by N. G. Herreshoff titled 'Marine Engine. Weights and Prices' in the Halsey C. Herreshoff Collection at the Herreshoff Marine Museum.\" (Source: van der Linde, Claas. March 24, 2019.)\n\n\"This engine was designed both as a marine engine and as a stationary engine.\" (Source: van der Linde, Claas. March 24, 2019.)\n\n\"A 'Herreshoff triple expansion steam engine, steeple type, cylinders 8 --- 12 1\/4 --- 20, 11 in. stroke' was listed in the 1924 auction catalog when HMCo was auctioned off. This appears to have been the engine that was built as job 2949 in 1904 as per a note dated January 7, 1904 on pattern list 107-046  --- together with two 5 5\/8\" & 8\" & 12 1\/2\" bore x 7\" stroke steam engines and one 7\" & 11 1\/4\" & 18\" bore x 9\" stroke engine. Only one of the two 7\" stroke engines appears to have ever been sold (for use in #267p ENAJ). The other three engines are shown on a group of HMCo photos now in the collection of HMM (numbered 2018-077-001 to 2018-077-004) and believed to have been taken by Tom Brightman in 1916. All three engines were also listed in the 1924 auction catalog.\" (Source: van der Linde, Claas. December 27, 2021.)", "uei":"3Exp_11000Stroke_08000H12500I20000L_Prim"},
   {"longdesc":"7\" & 11 1\/4\" & 18\" bore x 9\" stroke", "supdata":"<b>Triple exp.<\/b><br>3 cyl.<br>Prim. engine<br>280 \/ 300h.p.<br>2975 \/ 2240lbs<br>Price $2240", "firstbuilt":"1902", "lastbuilt":"1902", "unitsbuilt":"1", "primengdwg":"099-055 (HH.5.08252)", "assodwgs":"099-000, 099-034, 099-035, 099-036, 099-030, 099-031, 099-032, 099-033, 099-037, 099-041, 099-038, 099-039, 099-040, 099-042, 099-043, 099-044, 099-045, 099-046, 099-047, 099-048, 099-049, 099-050, 099-051, 099-052, 099-052, 099-053, 099-054, 099-055", "imgs":"Eng_3Exp_09000Stroke_07000H11250I18000L_Prim_HMM_2018-077-002_ca1916.jpg, Eng_3Exp_09000Stroke_07000H11250I18000L_Prim_HMM_2018-077-001_right_ca1916.jpg", "usedby":"<span title=\"header=[] body=[<b>#224p Eugenia IV (1902)<br>Steam Yacht built for J. B. Herreshoff; designed by NGH; LOA&nbsp;112ft<\/b><img src='..\/Images_Vessels\/w250px\/P00224_Eugenia_IV_1913_10_07.jpg'>] \"><a href=\"..\/Docs\/P00224_Eugenia_IV.htm\">#224p<\/a><\/span> Eugenia IV", "collection1":"", "note":"\"Marine Engine of Inclosed Type. 7 & 11 1\/4 & 18 x 9, 520[rpm], 300[hp]. [Note:] 305 [hp in pencil].\" (Source: Herreshoff, N. G. Handwritten List of HMCo-Made Steam Engines. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum, MRDED1_00220. Undated, between 1903 and 1918.)\n\n\"Price from undated (1903 or later) diagram by N. G. Herreshoff titled 'Marine Engine. Weights and Prices' in the Halsey C. Herreshoff Collection at the Herreshoff Marine Museum.\" (Source: van der Linde, Claas. March 24, 2019.)\n\n\"A 'Herreshoff 200 h. p. triple expansion steam engine, steeple type, cylinders 7 --- 11 1\/4 --- 18, 9 in. stroke' was listed in the 1924 auction catalog when HMCo was auctioned off. This appears to have been the engine that was built as job 2948 in 1904 as per a note dated January 7, 1904 on casting list 099-052  --- together with a 8\" & 12 1\/2\" & 20\" bore x 11\" stroke steam engine and two 5 5\/8\" & 8\" & 12 1\/2\" bore x 7\" stroke steam engines. Only one of the two 7\" stroke engines appears to have ever been sold (for use in #267p ENAJ). The other three engines are shown on a group of HMCo photos now in the collection of HMM (numbered 2018-077-001 to 2018-077-004) and believed to have been taken by Tom Brightman in 1916. All three engines were also listed in the 1924 auction catalog.\" (Source: van der Linde, Claas. December 27, 2021.)", "uei":"3Exp_09000Stroke_07000H11250I18000L_Prim"},
   {"longdesc":"4 1\/2\" & 6 1\/4\" & 10\" bore x 5 1\/2\" stroke", "supdata":"<b>Triple exp.<\/b><br>3 cyl.<br>Prim. engine<br>80h.p.<br>704lbs<br>Price $720", "firstbuilt":"1904", "lastbuilt":"1904", "unitsbuilt":"1", "primengdwg":"097-043 (HH.5.08166)", "assodwgs":"097-026, 097-027, 097-028, 097-029, 097-030, 097-033, 097-031, 097-032, 097-034, 097-035, 009-049, 097-036, 097-037 [103-013], 097-038, 097-039, 097-040, 097-041, 097-042, 022-042, 097-043", "imgs":"", "usedby":"<span title=\"header=[] body=[<b>#242p Breeze (1904)<br>High Speed Steam Launch; designed by NGH; LOA&nbsp;45ft&nbsp;6in<\/b><img src='..\/Images_Vessels\/w250px\/P00242_Breeze_and_P00000_Unknown_Launch_a.jpg'>] \"><a href=\"..\/Docs\/P00242_Breeze.htm\">#242p<\/a><\/span> Breeze", "collection1":"", "note":"\"Marine Engine of Inclosed Type. 4 1\/2 & 6 1\/4 & 10 x 5 1\/2, 730[rpm], 80[hp]. [Note:] 82 [hp in pencil].\" (Source: Herreshoff, N. G. Handwritten List of HMCo-Made Steam Engines. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum, MRDED1_00220. Undated, between 1903 and 1918.)\n\n\"Note, that the HMCo-made vessel index card in the Hart Nautical Collections states that Breeze was fitted with a 4 1\/2in. & 7in. & 11 1\/4in. x 7in. steam engine. Existing plans in the Hart Nautical Collections which reference Breeze suggest that Breeze had been fitted with a 4 1\/2in & 6 1\/4in. & 10in. x 5 1\/2in. engine.\" (Source: van der Linde, Claas. May 14, 2015.)\n\n\"Price from undated (1903 or later) diagram by N. G. Herreshoff titled 'Marine Engine. Weights and Prices' in the Halsey C. Herreshoff Collection at the Herreshoff Marine Museum.\" (Source: van der Linde, Claas. March 24, 2019.)\n\n\"Designed in early 1902 and built ca. June 1902 this steeple engine with enclosed casing appears to have been the second-to-last triple steam engine designed by NGH. One wonders if this type of engine was also the culmination of NGH's steam engine development. But times were changing from steam towards internal combustion and only one engine was ever built. It was installed in January 1904, more than one year after it had been made, in the high speed steam launch #242p Breeze of 1903\/1904. Little is known about Breeze, other than that she came back to Bristol in about 1906 and was owned and advertised by HMCo before she was resold again --- probably in 1910 and without her steam engine which had been replaced by an internal combustion engine. The original steam engine appears to have sat at HMCo for a decade before in 1919 NGH decided to replace the noisy and unbalanced VanBlerck motors of his own #299p Helianthus II with this old but noiseless and vibration-free steam engine. He was very satisfied with it, but soon after received an offer to sell Helianthus II which he could not resist. In a final ironic twist of history the new owner immediately replaced the old unfashionable steam engine --- with two noisy Murray & Tregurtha gas engines!\" (Source: van der Linde, Claas. December 28, 2021.)", "uei":"3Exp_05500Stroke_04500H06250I10000L_Prim"},
   {"longdesc":"7\" & 14\" bore x 9\" stroke", "supdata":"<b>Double exp.<\/b><br>2 cyl.<br>Prim. engine", "firstbuilt":"1907", "lastbuilt":"1911", "unitsbuilt":"2", "primengdwg":"099-056 (HH.5.08253)", "assodwgs":"099-056, 099-057, 099-058, 099-059, 099-060, 099-061, 099-063", "imgs":"", "usedby":"<span title=\"header=[] body=[<b>#261p Wave (1907)<br>Steam Ferry built for U.S. Navy; designed by NGH; LOA&nbsp;82ft&nbsp;8in<\/b><img src='..\/Images_Vessels\/w250px\/P00261_Wave_a.jpg'>] \"><a href=\"..\/Docs\/P00261_Wave.htm\">#261p<\/a><\/span> Wave, <span title=\"header=[] body=[<b>#280p Inca (1911)<br>Steam Ferry built for U.S. Navy; designed by NGH; LOA&nbsp;100ft&nbsp;0in<\/b>] \"><a href=\"..\/Docs\/P00280_Inca.htm\">#280p<\/a><\/span> Inca", "collection1":"", "note":"\"Marine Engine of Inclosed Type. 7 & 14 x 9.\" (Source: Herreshoff, N. G. Handwritten List of HMCo-Made Steam Engines. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum, MRDED1_00220. Undated, between 1903 and 1918.)", "uei":"2Exp_09000Stroke_07000H14000L_Prim"},
   {"longdesc":"5x12\" bore uniflow x 12\" stroke", "supdata":"<b>Simple exp.<\/b><br>5 cyl.<br>Prim. engine<br>1500h.p.", "firstbuilt":"1934", "lastbuilt":"", "unitsbuilt":"NA", "primengdwg":"", "assodwgs":"100-000, 100-000, 100-000, 100-000, 100-000, 100-000", "imgs":"", "usedby":"", "collection1":"", "note":"\"A uniflow engine having 5 equal sized clinders of 12\" bore and 12\" stroke. Uniflow engines appear to have been researched at HMCo in 1909 and between 1934 and 1941. It is doubtful if this engine was ever built.\" (Source: van der Linde, July 31, 2021.)", "uei":"1Exp_12000Stroke_12000H_5cyl_Uniflow_Prim"},
   {"longdesc":"16\" & 28\" bore x 16\" stroke", "supdata":"<b>Double exp.<\/b><br>2 cyl.<br>Prim. engine<br>310h.p.", "firstbuilt":"1882", "lastbuilt":"", "unitsbuilt":"NA", "primengdwg":"", "assodwgs":"020-011, 020-018, 020-001, 020-006, 020-004, 036-040, 036-049, 020-040, 020-002, 020-019, 020-025, 020-016, 020-021, 020-033, 036-042, 036-039, 020-007, 020-017, 020-010, 020-026, 020-020, 020-029, 020-013, 020-037, 020-028, 020-032, 020-027, 020-042, 020-035, 020-031, 020-038, 020-014, 020-034, 020-005, 020-012, 020-022, 020-023, 020-030, 020-024, 020-008, 020-015, 020-036, 020-051, 020-050, 020-044, 020-041, 020-047, 020-003, 020-045, 020-049, 020-043, 020-054, 020-039, 020-048, 020-052, 020-055, 020-009", "imgs":"", "usedby":"<span title=\"header=[] body=[<b>#89p Orienta (1882)<br>Steam Yacht built for Jabez A. Bostwick; designed by NGH; LOA&nbsp;126ft&nbsp;0in<\/b><img src='..\/Images_Vessels\/w250px\/P00089_Orienta_Cozzens.jpg'>] \"><a href=\"..\/Docs\/P00089_Orienta.htm\">#89p<\/a><\/span> Orienta", "collection1":"", "note":"\"[Detailed data and dimensioned sketche of valve titled 'Notes and data from model of [Stephenson Link] Valve Gearing' of 16\" & 28\" bore x 16\" stroke engine.]\" (Source: Herreshoff, N.G. Handwritten notes in Design Book No. 1. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum. October 28, 1882.)\n\n\"16 & 28 x 16 at 120lbs steam [pressure] and 155 rev[olutions per minute] \u2026 310h.p. ... Orienta [#89p], Aug[ust] 27, [18]90.\" (Source: Herreshoff, N.G. Penciled note dated August 27, 1890 laid in to Design Book No. 2. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum. August 27, 1890.)\n\n\"New engine for #89p Orienta in 1882\/1883. Many plans exist for this engine.\" (Source: van der Linde, July 31, 2021.)", "uei":"2Exp_16000Stroke_16000H28000L_Prim"},
   {"longdesc":"1\" bore x 2\" stroke", "supdata":"<b>Simple exp.<\/b><br>1 cyl.<br>Aux. engine", "firstbuilt":"1904", "lastbuilt":"", "unitsbuilt":"NA", "primengdwg":"", "assodwgs":"022-041", "imgs":"", "usedby":"", "collection1":"", "note":"\"Feed pump for 4 1\/2\" & 6 1\/4\" & 10\" bore x 5 1\/2\" stroke engine for #242p Breeze.\" (Source: van der Linde, July 31, 2021.)", "uei":"1Exp_02000Stroke_01000H_Aux"},
   {"longdesc":"2 1\/2\" bore x 2 1\/2\" stroke", "supdata":"<b>Simple exp.<\/b><br>1 cyl.<br>Aux. engine", "firstbuilt":"N/A", "lastbuilt":"", "unitsbuilt":"NA", "primengdwg":"", "assodwgs":"", "imgs":"", "usedby":"", "collection1":"", "note":"\"A 2 1\/2\" x 3 1\/2\" auxiliary engine to drive a circulating pump.\" (Source: van der Linde, Claas. July 31, 2021.)", "uei":"1Exp_02500Stroke_02500H_Aux"},
   {"longdesc":"2 1\/2\" bore x 2 3\/4\" stroke", "supdata":"<b>Simple exp.<\/b><br>1 cyl.<br>Aux. engine", "firstbuilt":"1942", "lastbuilt":"", "unitsbuilt":"NA", "primengdwg":"", "assodwgs":"167-000", "imgs":"", "usedby":"", "collection1":"", "note":"\"An auxiliary 2 3\/4\" x 2 3\/4\" steam motor for a 30' ventilating fan.\" (Source: van der Linde, Claas. July 31, 2021.)", "uei":"1Exp_02750Stroke_02500H_Aux"},
   {"longdesc":"2 1\/2\" bore x 3 1\/2\" stroke", "supdata":"<b>Simple exp.<\/b><br>1 cyl.<br>Aux. engine", "firstbuilt":"1890", "lastbuilt":"", "unitsbuilt":"NA", "primengdwg":"013-024 (HH.5.01084)", "assodwgs":"069-039, 013-024, 013-025, 013-023, 013-022, 013-021, 013-055", "imgs":"", "usedby":"", "collection1":"", "note":"\"An auxiliary 2 1\/2\" x 3 1\/2\" stroke engine to drive an electric dynamo, a circulating pump or a steering engine.\" (Source: van der Linde, Claas. July 31, 2021.)", "uei":"1Exp_03500Stroke_02500H_Aux"},
   {"longdesc":"2 1\/2\" & 2 1\/2\" bore x 3 1\/2\" stroke", "supdata":"<b>Double exp.<\/b><br>2 cyl.<br>Aux. engine", "firstbuilt":"1897", "lastbuilt":"", "unitsbuilt":"NA", "primengdwg":"", "assodwgs":"039-082, 040-000", "imgs":"", "usedby":"", "collection1":"", "note":"\"For use as an auxiliary engine to drive a circulating engine or windlass.\" (Source: van der Linde, July 31, 2021.)", "uei":"2Exp_03500Stroke_02500H02500I_Aux"},
   {"longdesc":"3\" bore x 3\" stroke", "supdata":"<b>Simple exp.<\/b><br>1 cyl.<br>Aux. engine", "firstbuilt":"1898", "lastbuilt":"", "unitsbuilt":"NA", "primengdwg":"013-005 (HH.5.01059)", "assodwgs":"013-006, 013-002, 013-001, 013-008, 013-003, 013-007, 013-005, 013-056, 013-057, 013-059, 013-063, 013-061, 013-062, 013-064, 013-065, 013-066, 013-068, 013-060, 013-076, 023-032, 023-033, 013-004, 013-080, 013-081, 023-034, 013-092", "imgs":"", "usedby":"", "collection1":"", "note":"\"An auxiliary 3\" bore x 3\" stroke engine, used to drive a blower, a dynamo or a feed pump. From 1901 also with enclosed oil casing.\" (Source: van der Linde, Claas. July 31, 2021.)", "uei":"1Exp_03000Stroke_03000H_Aux"},
   {"longdesc":"3 1\/2\" bore x 3 1\/2\" stroke", "supdata":"<b>Simple exp.<\/b><br>1 cyl.<br>Aux. engine", "firstbuilt":"1881", "lastbuilt":"", "unitsbuilt":"NA", "primengdwg":"013-048 (HH.5.01108)", "assodwgs":"013-039, 013-040, 013-045, 013-041, 013-042, 013-043, 013-044, 023-011, 013-046, 023-014, 112-011, 013-047, 009-037, 013-053, 013-054, 013-052, 013-049, 013-050, 013-051, 013-048, 013-083, 013-082, 013-000, 013-084, 013-085, 013-086, 013-087, 013-088, 013-090, 013-091, 013-000, 013-093, 056-057", "imgs":"", "usedby":"", "collection1":"A replica of this pumping engine was built by students of MIT's Pappalardo Teaching Lab in 2018.", "note":"\"For use as an auxiliary engine to drive an air or feed pump.\" (Source: van der Linde, July 31, 2021.)", "uei":"1Exp_03500Stroke_03500H_Aux"},
   {"longdesc":"2x3.5\" bore uniflow x 3 1\/2\" stroke", "supdata":"<b>Simple exp.<\/b><br>2 cyl.<br>Aux. engine", "firstbuilt":"1934", "lastbuilt":"", "unitsbuilt":"NA", "primengdwg":"", "assodwgs":"100-000, 100-000", "imgs":"", "usedby":"", "collection1":"", "note":"\"A uniflow engine having 2 equal sized clinders of 3 1\/2\" bore and 3 1\/2\" stroke. Uniflow engines appear to have been researched at HMCo in 1909 and between 1934 and 1941. It is doubtful if this engine was ever built.\" (Source: van der Linde, July 31, 2021.)", "uei":"1Exp_03500Stroke_03500H_2cyl_Uniflow_Aux"},
   {"longdesc":"3\" bore uniflow x 3\" stroke", "supdata":"<b>Simple exp.<\/b><br>1 cyl.<br>Aux. engine<br>3.5h.p.", "firstbuilt":"1941", "lastbuilt":"", "unitsbuilt":"NA", "primengdwg":"", "assodwgs":"100-000, 100-000", "imgs":"", "usedby":"", "collection1":"", "note":"\"A uniflow engine having 2 equal sized clinders of 3\" bore and 3\" stroke. Uniflow engines appear to have been researched at HMCo in 1909 and between 1934 and 1941. This particular engine appears to have been intended for auxiliary use. Plan HH.5.08302 from December 15, 1941 describes it as 'Bore 3\". Stroke 3\". Rating 3 1\/2hp per cylinder at 1500rpm. Saturated steam at 150lbs per spin gage. Exhausting to cylinder.' It is doubtful if this engine was ever built.\" (Source: van der Linde, July 31, 2021.)", "uei":"1Exp_03000Stroke_03000H_2cyl_Uniflow_Aux"},
   {"longdesc":"6x3.5\" bore uniflow x 4\" stroke", "supdata":"<b>Simple exp.<\/b><br>6 cyl.<br>Prim. engine", "firstbuilt":"1906", "lastbuilt":"", "unitsbuilt":"NA", "primengdwg":"", "assodwgs":"117-001, 117-002, 117-003, 117-004, 117-005, 117-006, 117-007", "imgs":"", "usedby":"", "collection1":"", "note":"\"A uniflow engine having 6 equal sized clinders of 3 1\/2\" bore and 4\" stroke. Uniflow engines appear to have been researched at HMCo in 1909 and between 1934 and 1941. On July 31, 1909 NGH filed for a patent for such an engine which was granted on March 14, 1911 as \"Patent No 986982: Steam-Engine.\" It was a six cylinder uniflow (unaflow) poppet valve V rotary steam engine with valves like a usual gasoline engine but the steam only went one way in the cylinders. It entered through the inlet valve at the top of the cylinders and exhausted through the cylinder walls at the bottom of the stroke. NGH experimented with this engine in 1906 but appears to have abandoned his experiment after he was severely burnt on December 15, 1906, when a tank of naptha had exploded while he was working on the engine with his sons Sidney and L. Francis (who later wrote that he believed that this was the last steam engine his father had designed). An \"Experimental 20 h. p. six cylinder single acting uniflow steam engine\" was listed in the 1924 auction catalog when HMCo was auctioned off and it is believed that this is the very same engine.\" (Source: van der Linde, July 31, 2021.)", "uei":"1Exp_04000Stroke_03500H_6cyl_Uniflow_Prim"},
   {"longdesc":"4\" bore x 4\" stroke", "supdata":"<b>Simple exp.<\/b><br>1 cyl.<br>Aux. engine<br>5 \/ 7h.p.<br>367lbs", "firstbuilt":"1888", "lastbuilt":"", "unitsbuilt":"NA", "primengdwg":"013-038 (HH.5.01098)", "assodwgs":"013-038, 023-018, 013-035, 013-036, 013-033, 013-034, 013-037, 013-031, 013-032, 013-058, 013-067, 013-069, 013-070, 013-075, 013-071, 013-072, 013-000, 013-073, 013-074, 013-075, 013-077, 013-078, 013-079, 013-089, 013-094", "imgs":"", "usedby":"", "collection1":"", "note":"\"Auxiliary blower engine for #184p Porter, #185p Dupont, #190p Morris and several other large steam vessels. A 'Herreshoff single cylinder 4 x 4\" 5 h. p. upright steam engine, complete', 'Two Herreshoff 7 h. p. 4 x 4\" single-cylinder engines --- suitable for electric direct connected generator', and 'Two Herreshoff 7 h. p. 4 x 4 in. single cylinder steam engine --- suitable for driving blower' were listed in the 1924 auction catalog when HMCo was auctioned off. (Source: van der Linde, Claas. July 31, 2021.)", "uei":"1Exp_04000Stroke_04000H_Aux"},
   {"longdesc":"1 1\/2\" bore x 5\" stroke", "supdata":"<b>Simple exp.<\/b><br>1 cyl.<br>Aux. engine", "firstbuilt":"1879", "lastbuilt":"", "unitsbuilt":"NA", "primengdwg":"", "assodwgs":"022-006", "imgs":"", "usedby":"", "collection1":"", "note":"\"Circulating steam pump.\" (Source: van der Linde, Claas. July 31, 2021.)", "uei":"1Exp_05000Stroke_01500H_Aux"},
   {"longdesc":"2 1\/2\" bore x 5\" stroke", "supdata":"<b>Simple exp.<\/b><br>1 cyl.<br>Aux. engine", "firstbuilt":"1888", "lastbuilt":"", "unitsbuilt":"NA", "primengdwg":"", "assodwgs":"012-018", "imgs":"", "usedby":"", "collection1":"", "note":"\"Auxiliary engine to drive a circulating pump.\" (Source: van der Linde, Claas. July 31, 2021.)", "uei":"1Exp_05000Stroke_02500H_Aux"},
   {"longdesc":"3 1\/2\" bore x 6\" stroke", "supdata":"<b>Simple exp.<\/b><br>1 cyl.<br>Aux. engine", "firstbuilt":"1885", "lastbuilt":"", "unitsbuilt":"NA", "primengdwg":"", "assodwgs":"023-008, 023-009, 023-010", "imgs":"", "usedby":"", "collection1":"", "note":"\"Auxiliary engine for a blower on #118p Stiletto and a centrifugal pump on #89p Orienta.\" (Source: van der Linde, Claas. July 31, 2021.)", "uei":"1Exp_06000Stroke_03500H_Aux"},
   {"longdesc":"3 1\/2\" bore x 7\" stroke", "supdata":"<b>Simple exp.<\/b><br>1 cyl.<br>Aux. engine<br>250lbs", "firstbuilt":"N/A", "lastbuilt":"", "unitsbuilt":"NA", "primengdwg":"", "assodwgs":"", "imgs":"", "usedby":"<span title=\"header=[] body=[<b>#20p Lightning (1876)<br>Navy Steam Torpedo Boat built for U.S. Navy; designed by NGH; LOA&nbsp;58ft&nbsp;0in<\/b><img src='..\/Images_Vessels\/w250px\/P00020_Lightning.jpg'>] \"><a href=\"..\/Docs\/P00020_Lightning.htm\">#20p<\/a><\/span> Lightning", "collection1":"", "note":"\"Engine for electric light. --- Single, direct acting; cylinders, 3 1\/2 inches diameter, 7 inches stroke; fitted with Herreshoff's patent cut-off valves; fly wheel, 20 inches in diameter; drives electric machine 2,000 revolutions per minute; weight, 250 pounds.\" (Source: U.S. Secretary of the Nayy. Report of the Secretary of the United States Navy. Washington, 1876, p. 140.)", "uei":"1Exp_07000Stroke_03500H_Aux"},
   {"longdesc":"4 1\/4\" bore x 7\" stroke", "supdata":"<b>Simple exp.<\/b><br>1 cyl.<br>Aux. engine<br>14h.p.", "firstbuilt":"1886", "lastbuilt":"", "unitsbuilt":"NA", "primengdwg":"", "assodwgs":"014-046", "imgs":"", "usedby":"", "collection1":"", "note":"\"Diameter of Cylinder 4.25in.; Stroke 7in.; Max. Rev. per Min. 343; Max. Steam Pres. per Sq. Inch. 140lbs.; Max. Horse Power 14. [Fitted] with feed pumps, with or without air pumps and regulators. Complete brass casing for cylinders.\" (Source: Herreshoff Manufacturing Co. (creator). Data from 'Descriptive List of Plain, Single & Double Engines, for Portable, Stationary or Marine Use' on Printed Advertising Leaflet titled 'Herreshoff Manufacturing Company, Bristol, R.I. Sole Manufacturers of the Patent Safety Coil Boiler, Builders of Steam Vessels, Yachts, Launches, Portable, Stationary and Marine Engines, Pumps, Propeller Wheels and Safety Valves'. Herreshoff Marine Museum Collection, Acc. no. 86.228A. HMM Library Rare Books Room (Box 1), Folder [no #]. No date, ca1879??.)\n\n\"At least one 4 1\/4\" x 7\" engine was used as a blower engine for #89p Orienta as per the title for drawing 014-046.\" (Source: van der Linde, Claas. July 31, 2021.)", "uei":"1Exp_07000Stroke_04250H_Aux"},
   {"longdesc":"3 1\/2\" & 3 1\/2\" bore x 5\" stroke", "supdata":"<b>Double exp.<\/b><br>2 cyl.<br>Aux. engine", "firstbuilt":"1888", "lastbuilt":"", "unitsbuilt":"NA", "primengdwg":"013-017 (HH.5.01077)", "assodwgs":"013-009, 013-010, 013-012, 013-011, 013-012, 022-024, 022-022, 069-014, 069-017, 013-013, 112-034, 112-033, 013-016, 022-031, 013-017, 013-019", "imgs":"", "usedby":"", "collection1":"", "note":"\"Auxiliary engine for air & feed pumps, steering, and windlasses which appears to have been widely and often used for larger steam engines.\" (Source: van der Linde, Claas. July 31, 2021.)", "uei":"2Exp_05000Stroke_03500H03500L_Aux"},
   {"longdesc":"4\" & 4\" bore x 5\" stroke", "supdata":"<b>Double exp.<\/b><br>2 cyl.<br>Aux. engine", "firstbuilt":"1896", "lastbuilt":"", "unitsbuilt":"NA", "primengdwg":"013-018 (HH.5.01078)", "assodwgs":"013-014, 013-015, 013-018", "imgs":"", "usedby":"", "collection1":"", "note":"\"An auxiliary engine to drive an air or feed pump for very large steam engines, first used for #185p Dupont in 1898.\" (Source: van der Linde, Claas. July 31, 2021.)", "uei":"2Exp_05000Stroke_04000H04000L_Aux"},
   {"longdesc":"6 1\/2\" bore x 8\" stroke", "supdata":"<b>Simple exp.<\/b><br>1 cyl.<br>Stat. engine", "firstbuilt":"1887", "lastbuilt":"", "unitsbuilt":"NA", "primengdwg":"015-003 (HH.5.01205)", "assodwgs":"015-003, 015-002", "imgs":"", "usedby":"", "collection1":"", "note":"\"Stationary engine used in HMCo lower shop plate room.\" (Source: van der Linde, Claas. July 31, 2021.)", "uei":"1Exp_08000Stroke_06500H_Stat"},
   {"longdesc":"5\" bore x 10\" stroke", "supdata":"<b>Simple exp.<\/b><br>1 cyl.<br>Stat. engine<br>22h.p.", "firstbuilt":"1879", "lastbuilt":"", "unitsbuilt":"NA", "primengdwg":"", "assodwgs":"016-008, 016-009 B, 016-012, 016-011, 016-010", "imgs":"", "usedby":"", "collection1":"", "note":"\"Diameter of Cylinder 5in.; Stroke 10in.; Max. Rev. per Min. 277; Max. Steam Pres. per Sq. Inch. 135lbs.; Max. Horse Power 22. [Fitted] with feed pumps, with or without air pumps and regulators. Complete brass casing for cylinders.\" (Source: Herreshoff Manufacturing Co. (creator). Data from 'Descriptive List of Plain, Single & Double Engines, for Portable, Stationary or Marine Use' on Printed Advertising Leaflet titled 'Herreshoff Manufacturing Company, Bristol, R.I. Sole Manufacturers of the Patent Safety Coil Boiler, Builders of Steam Vessels, Yachts, Launches, Portable, Stationary and Marine Engines, Pumps, Propeller Wheels and Safety Valves'. Herreshoff Marine Museum Collection, Acc. no. 86.228A. HMM Library Rare Books Room (Box 1), Folder [no #]. No date, ca1879??.)\n\n\"This engine may have also been used as a primary engine.\" (Source: van der Linde, Claas. July 31, 2021.)", "uei":"1Exp_10000Stroke_05000H_Stat"},
   {"longdesc":"11\" bore x 10\" stroke", "supdata":"<b>Simple exp.<\/b><br>1 cyl.<br>Stat. engine", "firstbuilt":"1902", "lastbuilt":"", "unitsbuilt":"NA", "primengdwg":"", "assodwgs":"116-000, 116-003, 116-005, 116-001, 116-002, 116-004, 116-006, 116-007, 116-008, 116-004, 116-009, 116-010, 116-011, 116-012, 116-013, 116-014, 116-015, 116-016", "imgs":"", "usedby":"Used as electric engine for Nichols Chemical Co. and as shop engine in the HMCo planing mill and for other customers.", "collection1":"", "note":"\"Plan 116-000 from 1902 makes reference to Mr. F.H., crosshead as for 13 1\/2\" stroke engine and a dynamo to be driven from this engine which might suggest that it was intended for the Nichols Company in Maspeth, N.Y. where NGH's brother J.B.F. Herreshoff was president and which had several stationary Herreshoff 13 1\/2\" stroke engines. Plan 116-014, also for this engine, makes reference to 'Shop Engine in Planing Mill Engine' which suggests that it was also used as a shop engine for HMCo (the casting list 116-009 also notes that job 03376 was for 'Shop Engine'. Plan 116-016 indicates that four engines were built as job 3589 -- two for the Paulaski Mining Co (owned by General Chemical Co), one for the Bayonne Works of the General Chemical Co. and one for the Calumet Works of the General Chemical Co. (which had been formed in 1899 by the merger of 12 already well-established chemical producers, including the Nichols Chemical Company).\" (Source: van der Linde, Claas. July 31, 2021.)", "uei":"1Exp_10000Stroke_11000H_Stat"},
   {"longdesc":"9\" bore x 18\" stroke", "supdata":"<b>Simple exp.<\/b><br>1 cyl.<br>Stat. engine<br>85h.p.", "firstbuilt":"1879", "lastbuilt":"", "unitsbuilt":"NA", "primengdwg":"", "assodwgs":"021-000, 021-027, 021-029, 021-038, 021-043, 021-040, 021-041 B, 021-044", "imgs":"", "usedby":"Apparently built for the Nichols [Chemical?] Co. as per the title for drawing 021-038.", "collection1":"", "note":"\"Diameter of Cylinder 9in.; Stroke 18in.; Max. Rev. per Min. 195; Max. Steam Pres. per Sq. Inch. 125lbs.; Max. Horse Power 85. [Fitted] with feed pumps, with or without air pumps and regulators. Complete brass casing for cylinders. [Furnished] with variable cut-off valve.\" (Source: Herreshoff Manufacturing Co. (creator). Data from 'Descriptive List of Plain, Single & Double Engines, for Portable, Stationary or Marine Use' on Printed Advertising Leaflet titled 'Herreshoff Manufacturing Company, Bristol, R.I. Sole Manufacturers of the Patent Safety Coil Boiler, Builders of Steam Vessels, Yachts, Launches, Portable, Stationary and Marine Engines, Pumps, Propeller Wheels and Safety Valves'. Herreshoff Marine Museum Collection, Acc. no. 86.228A. HMM Library Rare Books Room (Box 1), Folder [no #]. No date, ca1879??.)", "uei":"1Exp_18000Stroke_09000H_Stat"},
   {"longdesc":"16\" bore x 18\" stroke", "supdata":"<b>Simple exp.<\/b><br>1 cyl.<br>Stat. engine", "firstbuilt":"1881", "lastbuilt":"", "unitsbuilt":"NA", "primengdwg":"", "assodwgs":"021-052, 021-057, 021-058, 021-063", "imgs":"", "usedby":"For F.N.Co. as per note by C.H.K. on plan 021-052.", "collection1":"", "note":"\"Vertical Engine.\" (Source: van der Linde, Claas. July 31, 2021.)", "uei":"1Exp_18000Stroke_16000H_Stat"},
   {"longdesc":"4\" & 7\" bore x 4\" stroke", "supdata":"<b>Double exp.<\/b><br>2 cyl.<br>Aux. engine<br>17 \/ 20h.p.", "firstbuilt":"N/A", "lastbuilt":"", "unitsbuilt":"NA", "primengdwg":"", "assodwgs":"", "imgs":"", "usedby":"", "collection1":"", "note":"\"Tests of small engines as to efficiency in use of steam. ... 1st test of righthand 4 & 7 x 4 engine running shop dynamo. ... If work of exhaust against atmosphere is added to HP 13.4 + 10.4 = 23.8HP ...\" (Source: Herreshoff, N.G. Penciled notes in Design Book No. 4, p. 56. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum. December 8, 1903.)\n\n\"Made as a 'high speed engine for a fan blower & c' as per a table in NGH's design book under date of 1888 and July 1890 where its dimensions are given. See also in same design book inserted note with power requirement calculations for air pumps and feedpumps and mentioning this engine at 150lbs steam and 420rev to develop 17h.p. and at 500rev 20h.p. Also used as a stationary engine. The engine for the HMCo electric shop appears to have been built in 1900 but there appears to have been at least one earlier engine (for 'Mt. Morris') from 1898. The HCH Coll. at HMM also contains a drawing showing a 4 & 7 by 4 engine.\" (Source: van der Linde, Claas. July 31, 2021.)", "uei":"2Exp_04000Stroke_04000H07000L_Aux"},
   {"longdesc":"5\" & 9\" bore x 10\" stroke", "supdata":"<b>Double exp.<\/b><br>2 cyl.<br>Stat. engine", "firstbuilt":"1885", "lastbuilt":"", "unitsbuilt":"NA", "primengdwg":"", "assodwgs":"016-033 B, 016-034", "imgs":"", "usedby":"", "collection1":"", "note":"\"Special engine for Laurel Hill Chemical Works (Nichols Chemical Co.). Same size engine also as mach. only for SY Satan.\" (Source: van der Linde, Claas. July 31, 2021.)", "uei":"2Exp_10000Stroke_05000H09000L_Stat"},
   {"longdesc":"7\" & 11 1\/4\" bore x 10\" stroke", "supdata":"<b>Double exp.<\/b><br>2 cyl.<br>Stat. engine", "firstbuilt":"1897", "lastbuilt":"", "unitsbuilt":"NA", "primengdwg":"101-020 (HH.5.08338)", "assodwgs":"101-027, 101-022, 101-023, 101-021, 101-020, 101-000, 101-026, 101-025", "imgs":"Eng_2Exp_10000Stroke_07000H11250L_Stat_HMCo_workshop_engine_HMM_2006ca_Tech_Antiques_Photo.jpg, Eng_2Exp_10000Stroke_07000H11250L_Stat_HMCo_workshop_engine_HMM_2018_10_27_van_der_Linde_Photo_a.jpg, Eng_2Exp_10000Stroke_07000H11250L_Stat_HMCo_workshop_engine_HMM_2018_10_27_van_der_Linde_Photo_b.jpg, Eng_2Exp_10000Stroke_07000H11250L_Stat_HMCo_workshop_engine_HMM_2018_10_27_van_der_Linde_Photo_c.jpg, Eng_2Exp_10000Stroke_07000H11250L_Stat_HMCo_workshop_engine_HMM_2018_10_27_van_der_Linde_Photo_d.jpg, Eng_2Exp_10000Stroke_07000H11250L_Stat_HMCo_workshop_engine_HMM_2018_10_27_van_der_Linde_Photo_e.jpg, Eng_2Exp_10000Stroke_07000H11250L_Stat_HMCo_workshop_engine_HMM_2018_10_27_van_der_Linde_Photo_f.jpg", "usedby":"HMCo stationary shop engine", "collection1":"Herreshoff Marine Museum.", "note":"\"A 'Herreshoff 40 h. p. compound steam engine 7 - 11 1\/4, 10 in. stroke' was listed in the 1924 auction catalog as position 888.\" (Source: van der Linde, Claas. July 31, 2021.)", "uei":"2Exp_10000Stroke_07000H11250L_Stat"},
   {"longdesc":"4 1\/4\" & 7\" & 7\" bore x 10\" stroke", "supdata":"<b>Triple exp.<\/b><br>3 cyl.<br>Stat. engine", "firstbuilt":"1899", "lastbuilt":"", "unitsbuilt":"NA", "primengdwg":"", "assodwgs":"016-067, 016-066", "imgs":"", "usedby":"Stationary engine for Hoyt & Son.", "collection1":"", "note":"", "uei":"3Exp_10000Stroke_04250H07000I07000L_Stat"},
   {"longdesc":"12 1\/2\" & 18\" & 25\" bore x 13 1\/2\" stroke", "supdata":"<b>Triple exp.<\/b><br>3 cyl.<br>Stat. engine<br>400h.p.", "firstbuilt":"1898", "lastbuilt":"", "unitsbuilt":"NA", "primengdwg":"104-074 (HH.5.08515)", "assodwgs":"104-000, 104-000, 035-012, 104-000, 104-060, 104-063, 104-064, 104-065, 104-059, 104-062, 104-047, 104-048, 104-058, 104-050, 104-052, 104-051, 104-049, 104-055, 104-056, 104-053, 104-057, 104-061, 104-075, 104-066, 104-067, 104-068, 104-074, 104-069, 104-070, 104-071, 104-072, 104-073, 035-011, 053-024, 104-076, 104-077, 104-078, 000-000 [107-000], 104-079, 104-080, 104-081, 104-082, 104-083, 104-084, 104-085, 104-086, 104-087, 104-088, 104-000, 104-000, 104-000, 104-000", "imgs":"Eng_3Exp_13500Stroke_12500H18000I25000L_Stat_NEWSM.jpg, Eng_3Exp_13500Stroke_12500H18000I25000L_Stat_NEWSM_Flickr_photo.jpg, Eng_3Exp_13500Stroke_12500H18000I25000L_Stat_NEWSM_2015_04_03_Jaggi_Photo.jpg", "usedby":"Nichols Copper Company (formerly Nichols Chemical Company, later Phelps Dodge) in Laurel Hill (later named Maspeth) in Queens, NY.", "collection1":"Two engines:\n1) New England Steam and Wireless Museum (in perfect operating condition)\n2) Smithsonian Institution (badly deteriorated after 40 years of outside storage).", "note":"\"Electric light engine 400 HP. Same basic engine as used in #191p Talbot, #192p Gwin, #190p Morris. These engines were used for 80 years at the Phelps Dodge copper refinery in Maspeth, Long Island, New York to drive low voltage DC generators to supply current to the plant's electrolytic refining cells. Plans in the Hart Nautical Collections at M.I.T. suggest that a total of eight of these stationary engines were built betwen 1898 and 1904 by HMCo for the Nichols Copper Company (formerly Nichols Chemical Company) in Laurel Hill (later named Maspeth) in Queens, NYC on Newtown Creek whose president was the famous chemicist John Brown Francis Herreshoff (1850-1932), a brother of designer N. G. Herreshoff.\" (Source: van der Linde, Claas. July 31, 2021.)", "uei":"3Exp_13500Stroke_12500H18000I25000L_Stat"},
   {"longdesc":"10\" & 20\" bore x 14\" stroke", "supdata":"<b>Double exp.<\/b><br>2 cyl.<br>Prim. engine", "firstbuilt":"1918", "lastbuilt":"", "unitsbuilt":"NA", "primengdwg":"108-021 (HH.5.08769)", "assodwgs":"108-002, 108-001, 108-012, 108-004, 108-013, 108-005, 108-008, 108-009, 108-018, 108-011, 108-010, 108-006, 108-007, 108-003, 108-015, 108-017, 108-016, 108-021, 108-022, 108-023, 108-014, 108-019, 108-020", "imgs":"", "usedby":"", "collection1":"", "note":"\"Marine Engine of Inclosed Type. 10 & 20 x 14. [Note:] Patterned 1918 [entire line in pencil and possibly added later].\" (Source: Herreshoff, N. G. Handwritten List of HMCo-Made Steam Engines. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum, MRDED1_00220. Undated, between 1903 and 1918.)\n\n\"Numerous elaborately detailed plans exist for this engine, often referring to a left-hand and a right-hand engine, and some referring to hull number #367p which would have been the Launch for Corsair that was fitted with a VanBlerck engine and certainly not with a heavy compound steam engine. This suggests that this engine and hull number #367p was initially intended for another large steam-engine driven vessel whose contract must have been cancelled.\" (Source: van der Linde, Claas. July 3, 2020.)\n\n\"Not built.\" (Source: van der Linde, Claas. July 15, 2021.)", "uei":"2Exp_14000Stroke_10000H20000L_Prim"},
   {"longdesc":" bore x 4 1\/2\" stroke", "supdata":"<b>Simple exp.<\/b><br>1 cyl.<br>Unclear. engine<br>35h.p.", "firstbuilt":"N/A", "lastbuilt":"", "unitsbuilt":"NA", "primengdwg":"", "assodwgs":"", "imgs":"", "usedby":"", "collection1":"", "note":"\"Two Herreshoff 35 h. p. 4 1\/2\" stroke, single cylinder, steam engines were listed in the 1924 auction catalog.\" (Source: van der Linde, Claas. July 31, 2021.)", "uei":"1Exp_04500Stroke__Unclear"},
   {"longdesc":"7\" bore x 14\" stroke", "supdata":"<b>Simple exp.<\/b><br>1 cyl.<br>Stat?. engine", "firstbuilt":"N/A", "lastbuilt":"", "unitsbuilt":"NA", "primengdwg":"", "assodwgs":"", "imgs":"", "usedby":"", "collection1":"", "note":"\"Diameter of Cylinder 6in.; Stroke 10in.; Max. Rev. per Min. 277; Max. Steam Pres. per Sq. Inch. 135lbs.; Max. Horse Power 32. [Fitted] with feed pumps, with or without air pumps and regulators. Complete brass casing for cylinders.\" (Source: Herreshoff Manufacturing Co. (creator). Data from 'Descriptive List of Plain, Single & Double Engines, for Portable, Stationary or Marine Use' on Printed Advertising Leaflet titled 'Herreshoff Manufacturing Company, Bristol, R.I. Sole Manufacturers of the Patent Safety Coil Boiler, Builders of Steam Vessels, Yachts, Launches, Portable, Stationary and Marine Engines, Pumps, Propeller Wheels and Safety Valves'. Herreshoff Marine Museum Collection, Acc. no. 86.228A. HMM Library Rare Books Room (Box 1), Folder [no #]. No date, ca1879??.)\n\n\"Four double pages (21-24) are dedicated to this 7\" x 14\" stroke engine engine in the book of steam engine casting patterns in the Hart Nautical Collections HH.6.120. Even though advertised by HMCo in about 1879 there seems to be no evidence that this engine was ever built as a primary engine to drive a boat (but possibly as a stationary engine).\" (Source: van der Linde, Claas. July 31, 2021.)", "uei":"1Exp_14000Stroke_07000H_Stat?"},
   {"longdesc":"12\" bore x 24\" stroke", "supdata":"<b>Simple exp.<\/b><br>1 cyl.<br>Stat?. engine<br>162h.p.", "firstbuilt":"N/A", "lastbuilt":"", "unitsbuilt":"NA", "primengdwg":"", "assodwgs":"", "imgs":"", "usedby":"", "collection1":"", "note":"\"Diameter of Cylinder 12in.; Stroke 24in.; Max. Rev. per Min. 164; Max. Steam Pres. per Sq. Inch. 120lbs.; Max. Horse Power 162. [Fitted] with feed pumps, with or without air pumps and regulators. Complete brass casing for cylinders. [Furnished] with variable cut-off valve.\" (Source: Herreshoff Manufacturing Co. (creator). Data from 'Descriptive List of Plain, Single & Double Engines, for Portable, Stationary or Marine Use' on Printed Advertising Leaflet titled 'Herreshoff Manufacturing Company, Bristol, R.I. Sole Manufacturers of the Patent Safety Coil Boiler, Builders of Steam Vessels, Yachts, Launches, Portable, Stationary and Marine Engines, Pumps, Propeller Wheels and Safety Valves'. Herreshoff Marine Museum Collection, Acc. no. 86.228A. HMM Library Rare Books Room (Box 1), Folder [no #]. No date, ca1879??.)\n\n\"Three double pages (21-24) are dedicated to this 12\" x 24\" stroke engine in the book of steam engine casting patterns in the Hart Nautical Collections HH.6.120. Even though advertised by HMCo in about 1879 there seems to be no evidence that this engine was ever built as a primary engine to drive a boat (but possibly as a stationary engine).\" (Source: van der Linde, Claas. July 31, 2021.)", "uei":"1Exp_24000Stroke_12000H_Stat?"},
   {"longdesc":"7\" & 12\" bore x 14\" stroke", "supdata":"<b>Double exp.<\/b><br>2 cyl.<br>Stat?. engine<br>80h.p.", "firstbuilt":"N/A", "lastbuilt":"", "unitsbuilt":"NA", "primengdwg":"", "assodwgs":"", "imgs":"", "usedby":"", "collection1":"", "note":"\"Diam. of High. Pres. Cyl. 7in.; Diam. of Low Pres. Cyl. 12in.; Stroke 14in.; Max. Rev. per Min. 227; Max. Steam Pres. per Sq. Inch. 130lbs.; Max. Horse Power 80. [Fitted] with feed and air pumps, with or without regulators. Brass casing to cylinders. [Has] variable cut-off valve.\" (Source: Herreshoff Manufacturing Co. (creator). Data from 'Descriptive List of Compound Condensing Engines for Stationary or Marine Use' on Printed Advertising Leaflet titled 'Herreshoff Manufacturing Company, Bristol, R.I. Sole Manufacturers of the Patent Safety Coil Boiler, Builders of Steam Vessels, Yachts, Launches, Portable, Stationary and Marine Engines, Pumps, Propeller Wheels and Safety Valves'. Herreshoff Marine Museum Collection, Acc. no. 86.228A. HMM Library Rare Books Room (Box 1), Folder [no #]. No date, ca1879??.)\n\n\"[Dimensioned sketch of Stephenson link valve gearing of 7\" and 12\" bore x 14\" stroke engine.]\" (Source: Herreshoff, N.G. Handwritten notes in Design Book No. 1. Halsey C. Herreshoff Collection at the Herreshoff Marine Museum. Ca. 1880.)\n\n\"One double page (25) is dedicated to this 7\" & 12\" x 14\" stroke engine in the book of steam engine casting patterns in the Hart Nautical Collections HH.6.120. Even though advertised by HMCo in about 1879 there seems to be no evidence that this engine was ever built as a primary engine to drive a boat (but possibly as a stationary engine).\" (Source: van der Linde, Claas. July 31, 2021.)", "uei":"2Exp_14000Stroke_07000H12000L_Stat?"},
   {"longdesc":"16\" & 25\" bore x 16\" stroke", "supdata":"<b>Double exp.<\/b><br>2 cyl.<br>Stat. engine", "firstbuilt":"1900", "lastbuilt":"", "unitsbuilt":"NA", "primengdwg":"", "assodwgs":"105-066, 105-000, 105-067, 105-068, 105-069, 105-070, 105-071, 105-072, 105-073, 105-074, 105-075, 105-076, 105-077, 105-078, 105-079, 105-080, 105-081, 105-082, 105-083, 105-084, 105-085, 105-086, 105-087, 105-088, 105-089, 105-090, 105-091, 105-092, 105-095, 105-096, 105-093, 105-094", "imgs":"", "usedby":"Stationary engine for Crompton & Knowles.", "collection1":"", "note":"\"Job 3668.\" (Source: van der Linde, Claas. July 31, 2021.)", "uei":"2Exp_16000Stroke_16000H25000L_Stat"},
]