Miscelleneous

C L DUBEY – EXERCISE – 11 (Grain Stability)

Q1. A vessel displacing 16500 tonnes has KG, 7.50m. Calculations of grain shift give the following data.
Volumetric heeling moment = 3960m4
Stowage factor = 1.2m3/tone
For the given displacement and KG the vessel has the following values of GZ at the angle of heel given.
Heel
0
15
30
45
60
75
90
GZ
0.00
0.267
0.645
0.571
0.163
-0.454
-1.104m
Verify whether the vessel satisfies intact stability requirements for grains cargo. Angle of flooding is 400.
Solution –

Given VHM = 3960m4
Weight heeling moment = 3960/1.2
= 3300m4
λ0 = 0.2m, λ40 = 0.16m

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