Page 129 - statbility for masters and mates

List 117
Fig. 13.4
Moments about the centre line (as in Figure 13.4(a)) For levers to port, use ve sign.
For levers to starboard, use ve sign.
or
w
250 50 300
d
Listing moment
to port to starboard
ve ve
7:6 ± 1900 4:6 ± 230 6:1 1830 ±
1830 2130 1830
300
Let the ®nal position of the centre of gravity be as shown in Figure 13.4(b)
; Final listing moment W GG1 GG1 Final moment
Final displacement
300 0:035 m 8500
GG1 0:035 m to starboard, because of the ve sign used in table:
Since the ®nal position of the centre of gravity must lie vertically under M, it follows that the ship will list y degrees to starboard.
®nal moment