A unification in the added mass theory of planing

Abstract Payne [(1988), Design of High-speed Boats: Volume 1, Planing . Fishergate, Inc., Annapolis, Maryland] (as well as in some previous and subsequent papers), gives an approximate added mass variation with chines immersed and also presents the conventional “cross-flow force” hypothesis as an additional lift component. In fact, the lift increment due to the chines immersed added mass variation is the same as the “cross-flow force”, so that adding the two together results in a chines immersed dynamic force which is twice the correct value.