Page 158 - statbility for masters and mates

146 Ship Stability for Masters and Mates
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Fig. 15.9
2000 tonnes 200 tonnes 1800 tonnes
Bodily rise 90 cm Assume levers and moments forward of LCF are ve.
Total cargo discharged Total bunkers loaded Net weight discharged
Bodily rise w TPC
1800 20
Assume levers and moments aft of LCF are ve.
Weight Distance from C.F.
500 40 500 25 500 20 500 50 150 12
50 15
Moments
20 000 12 500 10 000 25 000
1800 750
3550 Resultant moment 3550 tonnes m by the head because of the ve sign.
Change of trim Trim moment MCT 1 cm
3550 100
Change of trim 35:5 cm by the head Since centre of ¯otation is amidships,
Change of draft aft Change of draft forward 12 change of trim