Metacentre is at the intersection of vertical lines through the centres of buoyancy in the initial and slightly inclined positions.
- The transverse metacentre (M) is used when transverse inclinations (heel and list) are considered.
- The longitudinal metacentre (ML) is used when longitudinal inclinations (trim) are considered.
- Metacentric Height (GM) is the distance between the centre of gravity and the metacentre.
The position of the metacentre may be calculated from the formula.
BM = (I/V)
where , I is the moment of inertia of the waterplane in metre4 units
V is the volume of displacement in cubic metres.
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