Centre of bouyancy

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Centre of Bouyancy

The centre of bouyancy is the centroid of the submerged hull volume. It's location is given by the co-ordinates LCB (longitudinal centre of bouyancy), TCB (transverse centre of bouyancy), and VCB (vertical centre of bouyancy).

For simple shapes, the centre of bouyancy can be found easily. For example, a box-shaped vessel without heel or trim, the VCB is:

draught ÷ 2, LCB = length ÷ 2, and TCB = breadth ÷ 2.

More complex shapes will require integration of the hullform, generally performed using simpsons rules or computer programs (such as GHS, AutoShip or MaxSurf).

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