278 SHIP CALCULATIONS; 
TABLE IX.—LONGITUDINAL AND VERTICAL POSITIONS OF CENTER OF 
SIny Zyz 
ZB 
zy yy 
GRAVITY OF OUTSIDE PLATING, x = 1s = 16 PEE 
Intervals ‘ 
Center of gravity} Products for 
Half-girths. tas Products Fo of each below vertical 
Ree ce ecctions: Seat load water-line. functions. 
SpeBaleieictevetohareer dloarhetenae ete 3 
IapoD soimmanHaUOmoud pHs 40 4 162.0 11.6 469.8 
TQM csctstehs tert oter ee raya ek aete 38.2 /5 191.0 10.9 416.4 
DAN per tercicte cena geialicuetetere ences 36.1 6 216.6 10.5 379.0 
SR Mere Maae 8 ane . ) = 123. 
Q51- 
2ny=—101.9 2yz=6332.1 
Dy=552.1 siny _—101.9 X16 Zyz__ 6332.1 
zy 5S5200 zy 552.1 
x=—2.9 feet. Z=11.4 feet. 
All these methods to shorten and simplify the work are of the greatest 
value. 
The approximate area of the surface of outside plating may be gotten 
from the formula, A = 2sZy where y is the half-girth and A the area of 
both sides: 
