a?id Foreign Ships of War. 

 Table V. {concluded.) 



97 



Nature of the Elements. 



Exponent of displacem*, 



ter-Iine to the keel = 



Centre of gr, of displacement from 



,. s + 1. 2«+l.«.2s+4 > 



water-hne ' „„.,-„ ~S\ 



2.2«+1.2i+4 J 



Metacentre above water-line p—gX 



^ = « s 



Common centre of gravity of ship \ 

 above water-line = v J 



Distance of metacentre above cen- ( 

 tre of gravity = a / 



To have the same stability in all ) 

 these ships with the same surface f 

 of sail, o must be equal to . . . . ) 



Centre of gravity before middle 1 



of water-line •= I 



76 J 



Middle of the water-line / abaft 3 



the middle of the water-line > 



L = 0-2/ S 



Centre of gravity before the middle ? 



of the water-line I — a ) 



(p sec tion b efore centre of gravity 7 



a. w+1 J 



(f section before middle of water-! 



line I = a . n + 2 / 



From the abaft end of the water- ? 



line ; to ^ = P S 



Distance, for design, between the 



sections abaft a = 



From the fore end of the water- 

 line I to (p, for design, = Q.. . . . 

 Space between the sections, before, 



^ _Q 



10 _ 



Ileiglit of lower portsills above water 

 Weight of guns, shot, wads, pow- } 

 der, carriages, in cubic feet . . . . j 

 Ditto, in tons ' 



Gunners' stores -;;ur of abov 



lOO 



ive, to / 

 r .... S 



add, in cubic feet of water 

 Ditto, in tons. 

 Weight of ballast in cubic feet of 1 



water i 



Ditto, in tons 



Number of men 



Weight of hull, rigging, boats, an- 



^eiglit of hull, rigging, boats, an-") 

 < hors. Sec. or the weight of ship ( 

 without guns, stores, ballast, and ( 

 provisions, in cubic feet j 



I, viz. guns, "1 

 r, and provi- > 



Ditto, in tons 

 liurtheii of the slilp, 



stores, ballast, water, 



sions, in tons 

 Weight of ship and contents, in loiii 



A^..S'. Vol. (J. No. :i'i. AiK'. I82y. 



o 



'r.\iJLi: 



