at the extreme stern is a short deck, on which the iron 

 tiller traverses; and steering is by steering lines or by 

 a steering lever near the engine box. In recent years 

 the cabin of these boats have commonly been fitted 

 with a high hatch which serves also as a sheltered 

 steering position, and a small steering wheel is some- 

 times fitted here. The fuel tank is usually under the 

 after deck. Boats built since 1925 have more beam 

 in proportion to length and have upright square 

 transoms, called locally "box sterns." 



This model of launch was originally developed for 

 low power and used marine gasoline engines of 5 to 

 15 horsepower (most of these boats were intended 

 for engines ranging from 7 to 10 horsepower), with 

 which they are said to have achieved speeds of from 

 7 to 12 miles per hour under service conditions. 

 Automobile engines are now employed; ratings up to 

 250 horsepower and speeds up to 30 miles per hour 

 are claimed for some launches. 



The model is to the inside of plank and its half- 

 breadth is to the keel rabbet. The scale is % inch 

 to the foot; launches built to this half-model were 



The half-model shows a V-bottom hull having the 

 keel rabbet straight in the forebody but sweeping up 

 aft to the bottom of the stern, there to be fitted with 

 a skeg. The stern is round in plan and raking in 

 profile and is intended to be formed by vertical 

 staving on stern frames at chine and gunwale. The 

 bow is straight and raking. The midsection shows a 

 straight, rising floor carried to the angular chine 

 and a straight, somewhat flaring topsides above the 

 chine. The sheer is marked. In profile the chine 

 curves slightly fore-and-aft and is low at the bow, so 

 that it would not show there when boat was afloat. 



Scale of the half-model is '/, inch lo the foot, for 

 a boat to measure 60 feet moulded length at gunwale, 

 18 feet moulded beam, and drawing about 4 feet 

 at skeg. 



Boats of this size and type had a pilothouse and 

 engine trunk aft, with quarters there for the captain, 

 a cargo hatch and hold forward of the engine room, 

 and a forecasde in the bow. The boats usually 

 carried one mast and a gaff-sail and jib to steady 



RuwiNu Galley Used For Shad Fishing on the Puiuma(j River, 

 {Smitluonian photo 40^8.) 



1880. Rigged model USNM 55877. 



about 34 feet long stem rabbet to extreme stern at 

 chine, 6 feet 4 inches extreme beam at deck, depth 3 

 feet 1 inch rabbet to gunwale, and draft about 2 feet 

 3 inches at heel of rudder post. A notation on the 

 model indicates that the cabin was 8 feet long. 



Given by James B. Richardson, boatbuilder, Cam- 

 bridge, Maryland. 



CHESAPEAKE BAY V-BOTTOM MOTOR VESSEL, 



1929 

 Builder's Half-Model, usnm 311016 



This half-model was made by John B. Harrison in 

 1929 for a V-bottom, motor vessel for use as a "buy 

 boat" in transporting oysters and to haul shell as 

 well as general freisrht. No boat was built from it. 



the boat in heavy weather. The rudder post was 

 inboard of the stern. 



Given by John B. Harrison, shipbuilder, Tilghman's 

 Island, Maryland. 



POTOMAC RIVER SHAD DRAG-SEINE GALLEY, 



1880 

 Rigged Model, usnm 55877 



This model represents a lar^e rowing boat, or 

 "galley," once employed in the Potomac Ri\cr shad- 

 fishery to work a drag seine. These boats carried 

 about 1200 to 1500 fathoms of seine, made 30 feet 

 deep at the channel, or hauling, end and 12 feet deep 

 at the shore end. The mesh was 2)i to 3 inches. 

 The boats rowed 2 oars single-banked and, def)ending 



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