compound direct-acting engine of 6200 indicated 

 horsepower and made 23 statute miles per hour on 

 trials. She had a register tonnage of 2847 gross tons, 

 1598 net tons. .Scale of model 'i inch to the foot. 

 From the Hudson River Day Line. 



STERN- WHEEL RIVER STEAMER, 1908 

 Builder's Half-Model, usnm 311260 



Thomas A. Edison 



A stern-wheel steaniljoat for river navigation in 

 Florida was built on this model about 1908 by Samuel 

 Johnson at Apalachicola, Florida, and named the 

 Thomas A. Edison. The model represents an attempt 

 to improve upon the usual hull-form of this type of 

 vessel, and is supposed to have been made from plans 

 furnished the builder by the engine manufacturer. 



The model shows a shallow, flat-bottomed hull hav- 

 ing nearly straight sheer, a straight keel tucked up aft 

 to form a short but easy run, an upright straight stem 

 rabbet, a slightly rounded forefoot, vertical flat tran- 

 som, long and sharp entrance, flat floor, a hard bilge 

 on a short radius, and an upright topside. The flare 

 becomes very marked near the bow and stern, as the 

 bilges are made easy there. It was thought that a 

 slack bilge aft would make the vessel turn quickly, a 

 desired characteristic in these river steamers. 



The model is for a vessel 80 feet moulded length at 

 gunwale, 20 feet moulded beam at gunwale, and 3 

 feet 6 inches moulded depth. Scale of model is K inch 

 to the foot. 



Given by Samuel Johnson, boatbuilder, Apalachi- 

 cola, Florida. 



WOODEN, STERN- WHEEL RIVER STEAMER, 1908 

 Builder's Half-Model, usnm 311526 



Uneeda 



The wooden stern-wheel river steamer Uneeda was 

 built by H, Hansen on this model on Orange River, 

 near Fort Meyers, Florida, in 1908, for local river 

 service. The model shows a very shoal stern-wheel 

 steamer hull having straight sheer, a straight keel 

 with the run formed by an angular rake, or ''tuck-up," 

 aft, the stem rabbet slightly curved and rather up- 

 right, the transom wide, flat, and upright. The 

 entrance is short but rather sharp; the run formed 

 by the tuck-up is straight, but short. The deck 

 outline, in plan, shows almost parallel sides from 

 the stern almost to the bow. The midsection is 

 rectangular, the bilges being rounded on a very 

 small radius to save labor in building. 



The model is believed to be on a scale of % inch to 

 the foot and the vessel would then measure about 84 

 feet 6 inches moulded length, 20 feet 6 inches beam, 

 and 3 feet 6 inches moulded depth. 



Given by Captain H, Hansen. 



STEEL, SCREW LIGHTHOUSE TENDER, 1893 

 Builder's Half-Model, usnm 311829 



Maple 



This is the plating model used in building the single- 

 screw, steel, steam lighthouse tender Maple for the 

 L'.S. Lighthouse Service by Samuel L. Moore & Son 

 Co. at Elizabethport, New Jersey, in 1893, The 

 steamer replaced a sailing-schooner tender of the same 

 name. 



The half-model represents a steel, single-screw 

 steamer hull having moderate sheer, a straight keel 

 with little drag, an upright straight stem slightly 

 rounded at the forefoot, a vertical post, a round fan- 

 tail counter with flaring bulwarks, easy entrance, and 

 a short and full run. The midsection is formed with 

 a moderately rising straight floor, a firm round bilge, 

 and a nearly straight and vertical topside. 



The model is to the main rail and indicates the 

 short open space in them forward used to bring buoys 

 aboard with minimum lift. 



The Maple was 155 feet between perpendiculars, 30 

 feet beam, and 12 feet depth; she was 392 gross tons 

 register, and had a 650-horsepower reciprocating en- 

 gine. She was employed on the northern Atlantic 

 coast during most of her career. Scale of model is }^ 

 inch to the foot. 



Given by LT. S. Coast Guard, 



STEEL, SCREW LIGHTHOUSE TENDER, 1903 

 Builder's Half-Model, usnm 311828 



Larkspur 



This half-model was used for laying ofT the plating 

 of the steel single-screw, steam lighthouse tender 

 Larkspur built at Port Richmond, N, Y. in 1903, 

 Vessels of this type were employed to supply light- 

 houses along the coast, for attending lifesaving sta- 

 tions, and for maintaining buoys and other navigation 

 marks. 



The half-model represents a hull ha\ing strong 

 sheer, a straight keel with little drag, upright curved 

 stem, vertical post, round fantail counter, sharp 

 entrance of moderate length, and easy run. The 

 midsection shows a rising straight floor of moderate 



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