Page 152 - statbility for masters and mates

140 Ship Stability for Masters and Mates
6000 tonnes. Find the new drafts if a weight of 120 tonnes already on board is shifted forward a distance of 45 metres.
Trimming moment
Change of trim

Change of draft aft

Change of draft forward
Original drafts
Change due to trim 0:107 m Ans: New drafts 6:393 m A
w d 120 45
5400 tonnes m by the head
Trimming moment MCT 1cm
5400 240
22:5 cm by the head Ll Change of trim
60 22:5 126
10:7 cm
66 22:5
126 11:8 cm
6:500 m A
5:500 m F 0:118 m
5:618 m F
Example 2
A box-shaped vessel 90m 10m 6m ¯oats in salt water on an even keel at 3 m draft F and A. Find the new drafts if a weight of 64 tonnes already on board is shifted a distance of 40 metres aft.
BML L2 12d
90 90 12 3
BML 225m
Fig. 15.5
e