A SYSTEMATIC STUDY OF THE ROUGH-WATER PERFORMANCE OF PLANING BOATS

Abstract : A series of constant-deadrise models, varying in length, was tested in smooth water and regular waves to define the effects of deadrise, trim, loading, speed, length-beam ratio, and wave proportions on the added resistance, on heave and pitch motions, and on impact accelerations at the bow and center of gravity. Each of these parameters was varied independently of the others so as to obtain a proper evaluation of the effects of changing a single quantity. The results, presented in the form of response characteristics, cover a wide range of operating conditions; and show, quantitatively, the importance of design parameters on the rough-water performance of planing hulls.