metacentre

noun Naval Architecture.

1. the intersection between two vertical lines, one through the center of buoyancy of a hull in equilibrium, the other through the center of buoyancy when the hull is inclined slightly to one side or toward one end: the distance of this intersection above the center of gravity is an indication of the initial stability of the hull.

noun

1. the intersection of a vertical line through the centre of buoyancy of a floating body at equilibrium with the formerly vertical line through the centre of gravity of the body when the body is tilted