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.

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