Calculation of Exciting Forces on a Moving Ship in Waves Using the Haskind Formula at Far-Field

Abstract

Newman (1965) expressed the wave exciting forces and moments on a body in terms of the incident wave and the far-field radiation potentials and showed the numerical results for the submerged ellipsoids. In the present paper, we assume that the ship is represented by the singularity distributions on the central axis and we derive the general expressions for the exciting forces on a ship in waves. Some accounts of the forward-speed effect on the wave exciting forces are considered in evaluating the strength of the singularity distributions. Comparisons among the calculated results by the present method, the usual strip theory, and the experimental results have been made.