PREHISTORIC NAVAL ARCHITECTURE. 



645 



meut should be tlie tirst to be found, and this is obtained by computing 

 the weight of the ship, together with all the material, crew, equipment, 

 etc. In the present instance it is a 20-seater, that is a ship carrying- 

 twenty oars on each side, that engages our attention. 



The dimensions of a 20-seater (Fig. 150) should be as foHows: Length 

 of keel, 71^ feet, with a curve of (> niches; length between stems, 90 

 feet; width amidship, 17 feet; perpendicular height amidships, 8 feet, 

 curving toward the prows, which are elevated several feet above the 

 gunwale. 



Zok 



Fiji. 151. 

 Plan of a Priuected •■'I'hiuty-seatek. 



"The material employed to be oak or spruce with strong, stout ribs, 

 keelson and gunwale; the planking 1^ inches thick, fastened to the 

 timbers with iron rivets. The deck in the hold 2 feet below the water 

 line and 4 feet above the keel to be covered with boards \\ inches 

 thick, and represents an area 1)00 square feet. Upon it and resting 

 against the ship's side are benches 5 feet long amidships, and decreas- 

 ing toward tiie stems and from these the oars, twenty on each side, are 

 l>lied through holes placed .'! feet above tlie water and '?> feet a]>art. 



