410 Desc)iptio)i oj a Lije-Buat 



sheet copper, about twelve ounces to the square foot, and so 

 carefully soklered as to exclude the entrance of the water. 

 There are five cases in each side tier, and four equal cases in 

 the middle tier. Each side tier contains 11^ cubic feet, and 

 the midships tier 27, making 50 cubic feet in cases. Be- 

 sides this kind of floating capacity, there are 1 1 feet of cork 

 contained beneath the level of the thwarts at the extreme ends 

 of the vessel. The cases upon an average Aveigh 8 pounds 

 to the cubic foot ; and admitting that a cubic foot of salt water 

 weighs 64'^ pounds, each cubic foot of the cases will, on the 

 average, sustain 56\ pounds; and if the cork will sustain 

 50 pounds, the whole floating capacity will bear up 3375 

 pounds, or 23 men and 40 pounds, allowing each man to 

 weigh 145 pounds. 



'1 he boat is rigged in the simplest manner, with two snug 

 foul-weather sprit-sails, which take up very little room, and are 

 readily stowed away clear of the oars on each side of the boat, 

 being, moreover, a kind of sail the management of which Ts 

 well understood by the generality of seamen. Within the 

 boat are two delivering copper tubes of three inches diameter. 

 These pass through her bottom, and are secured by flanges 

 on the outside, and rise up within board to the level which the 

 water takes when it is allowed to flow into the vessel with her 

 crew on board. These tubes will deliver water by self-action 

 whenever its level shall be above their tops and above the 

 level of the water without the boat, and are intended to aid 

 the bailers when their best exertions cannot deliver the sea 

 that is thrown on board. At sucli times it will be proper to 

 pull out the four plugs in the bottom of the boat, so that the 

 superabundant water above the level within board, when the 

 boat is resting upon her floats, may pass off" by this means, as 

 well as through the tubes, and thereby may probably take 

 fi'om the necessity of bailing altogether. The same sized plug- 

 holes will equally deliver with the tubes; but the tubes are 

 always open to meet the occasion, while the plugs may be neg- 

 lected to be withdrawn. 



The general exterior of the boat under canvass, with the 

 steering oar to its jiosition on its pivot at the stern, is repre- 

 sented by fig. 1. From the rounding form of her body she 

 may be considered as bearing a resemblance to some Indian 

 canoe, with the attachment of a keel. In this figure are shown, 

 by dashed lines, the heights of the thwarts and platform, and 

 the several spaces for the stowage of her materials. The 

 floating capacity, in cases, is contained throughout the lengtli 

 beneath the thwarts lettered A and A, and the spaces B and B 

 at the extremities contain the cork. C and C are empty spaces 



beneath 



