Page 312 - statbility for masters and mates

300 Ship Stability for Masters and Mates
(d) To Find GM
IOZ ICL AEBB21
3979 477:5 0:122 3979 7
3972 m4
BM2 IOZ V
BM2 ;BM2
KB2 KM2
as before bilging, KG GM2
3972 50 10 4
1:99m
2:10 m
4:09 m
3:00 m 1:09 m
(e) To Find the List
tan List BB1=GM
0:12 0:1101
1:09
B 3 L B 3 L l ICL 2E3 2 3m4
LB3 lb3 4 ICL 12 3 m
Ans. List 6 170 to starboard Note: When m 100 per cent then:
or
Both formulae give the same answer
Summary
1 Make a sketch from the given information.
2 Calculate the mean bodily increase in draft.
3 Calculate the ship in the centre of buoyancy.
4 Estimate the second moment of area in the bilged condition with the use
of the parallel axis theorem.
5 Evaluate the new KB, BM, KM and GM.
6 Finally calculate the requested angle of list.