The vessel will trim up to a point where COB will be vertically in line with the COG of the ship. This will cause a righting couple that would try to bring both COG and COB in same vertical line. When we place weight on a ship at rest, the gravitational force acting downwards increases. This is because when the Center of Gravity is higher, this whole thing is less stable and can topple with slight external force (like if you are moving in the wind).Ī ship behaves the way it does because these two opposite forces are trying to balance out and bring the ship to the state of equilibrium. This is known as the Vertical center of gravity (VCG) or simply KG. Same way, if the LCG is aft of the midship, ship will be trimmed by the stern.
If the location of LCG is exactly at the midship, the ship will have no trim. This will cause the ship to sink, till the time buoyancy becomes equal to the downward gravitational force.īut if the COG of the ship is not on the centerline, the ship will have a list towards the side of COG. So at the equilibrium, the upthrust (buoyancy) will be equal to the weight of the ship which is 8000 T. Ship Stability Calculation Software How To Calculate The.
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