1874.] Loss of Life at Sea. 491 
6 
KF. 
72 " 
Formula for the equilibrated lever a —a. 
12 
Centre of gravity of the system being above the centre 
of displacement. 
In this formula, b=the line of intersection of the cross 
section of the floating body when upright with the surface 
of the water; S, the figure of displacement when the body 
is upright; a, the distance between the centres of gravity 
and displacement when the body is upright. 
In this case that of a block 12 feet square as described, 
pase 72, &c.— 
b=12 and S=6x 12. 
b3 
OR he 
= 136 
op 3 5 
OP tat 
BAe iat 
g being the centre of gravity of the floating block f g, 
evidently =06. 
a=b—325=275 
b? 
gs Oia et Bab 
The stability being negative in this case; but as the centre 
of gravity is lowered, a is diminished till it becomes equal to 
—_ when the stability is that of indifference ; when a is 
i 
b 
less th 
ess than 5 
, the stability becomes positive and the 
righting lever increases, while the upsetting lever remains 
constant ; the conditions in other respects remaining un- 
altered. 
