392 



OF THE STABILITY OF FLOATING BODIES AND OF SHIPS. 



to the head, and the 34th section adjacent to the stern, there must be 

 33 intervals, or 33x5 = 165 feet; therefore, draw the horizontal line 

 mn to represent the longer 

 axis of the plane of floata- 

 tion, and make be equal 

 to 165 feet, which divide 

 into 33 equal intervals of 

 5 feet each; then at right 

 angles to mn and through 

 the several points of divi- 

 sion 1,2,3,4, 5, &c. to 34, 

 draw the ordinates dd, ee, 

 //, a a, gg, kh, &c. to ii t 

 and from a scale of equal 

 parts, of the same dimen- 

 sions as that from which 

 be is taken, set off both 

 ways, (beginning at the 

 1st division adjacent to the 

 head of the vessel), the 

 numbers contained in the 

 twelfth column of the pre- 

 ceding table; then, through 

 the extremities of the seve- 

 ral ordinates, let the curve 

 man a be drawn, and it 

 will represent the plane of 

 floatation when the vessel 

 is upright, according to the 

 foregoing tabulated mea- 

 surements. It is manifest, 

 that by a similar mode of 

 procedure, the eleven remaining horizontal sections, situated between 

 the keel and the plane of floatation, might also be delineated; it is, 

 however, unnecessary to pursue the subject of construction farther, 

 since what has already been done, is quite sufficient to show the 

 reader, the method and nature of the delineation when pursued 

 throughout the entire vessel.* 



* It may be proper to remark, that the scales from which the vertical and 

 horizontal sections have been constructed, are to one another as 2 to 1 ; the one for 

 the vertical section being l-20th of an inch to a foot, and the other l-10th. 



