Page 140 - statbility for masters and mates

128 Ship Stability for Masters and Mates
(a) (b)
L O
But the second moment of the water-plane L
23 y3 tan y dx L
Fig. 14.5
The sum of the moment of all such wedges
tany 23y3dx
area about the centre-line I
O
23 y3 dx
O
I tan y
v hh1 V
; Sum of the moment of all such wedges BB2
or
But, the sum of the moments of the wedges v hh1
; V BB2 I tan y BB2 VI tany
BB2 BMtany `a' The vertical shift of the wedge gh g1h1
2gh
; The vertical moment of the shift v 2gh
V BB2 v hh1
In Figure 14.5(b):
2vgh OL yandOh1 23 y