The equilibrium of floating or submerged bodies requires that the weight of the body acting through its centre of gravity must be collinear with an equal buoyant force acting through the centre of buoyancy. A floating or submerged body will be in stable, unstable or neutral equilibrium if its centre of gravity is below, above or coincident with the centre of buoyancy respectively. Stability of floating body depends on its metacentric height is a positive value.