the, Stability of Ships. 287 
bility of vessels, by the methods here described, are far from dif- 
ficult, although they necessarily extend to some length; in 
order to give an illustration of these rules, by applying them to 
a particular vessel, I obtained, by favour of Messrs. Randall 
and Brent, eminent constructors, a draught expressing the form 
and dimensions of a large ship,* built for the service of the 
East India Company. According to this draught, the vessel is 
divided into 33 vertical segments, by 34 sections, intersecting 
the longer axis at right angles, and at a common distance of 
5 feet.-f 
The lengths of the ordinates entered in the annexed table J 
sufficiently define the form and magnitude of each of the 34, 
vertical sections ; it will not therefore be necessary to represent 
their figures by separate drawings, since the constructions and 
calculations founded on them, for inferring results in any one 
section, are similar to those which are required in the other 
sections. 
The greatest or principal section, which, according to this 
draught, intersects the longer axis at about bo feet from the 
1st section adjacent to the head, is represented by the figure 
BAO (fig. 31 ) : BA is the breadth at the water-line = 43.1b 
feet. BA is bisected in the point D ; and DO, drawn through 
D perpendicular to BA, is the distance of the keel from the. 
* The ship Coffneus. 
f Mr. Brent, jun. obligingly took the trouble, at my request, of delineating each 
of these sections on a large scale, and likewise of drawing and measuring the equidis* 
tant ordinates necessary for calculating the areas thereof, together with such additional, 
lines as are required for constructing the measure of the vessel’s stability, according to, 
the principles delivered in the preceding pages. 
% See Appendix. 
