 The low centre of gravity acts as a counterweight as the craft heels around its centre of buoyancy; that is, as a monohull heels, its ballast operates to restore it to its upright position.By contrast, a multihull's stability is derived from its width, and modern multihulls are much wider than earlier designs, with the beam sometimes more than half the LOA.Should the weather hull lift from the water, the weight of the vessel will seek to restore the multihull to its normal position.