Numerical study of planing vessels in waves

The performance of planing vessels in waves is investigated numerically by assuming linear regular incident waves in head sea. A 2D+t theory is presented to perform nonlinear time domain simulations of a prismatic planing boat in incident waves. A Boundary Element Method is employed to solve the initial boundary value problems in two-dimensional (2D) cross-planes. A simplified theory is also applied. The added mass and damping coefficients used in the latter theory are determined from the numerical simulation of forced oscillations. The wave induced heave and pitch motions calculated by these two methods are compared with the experiments by Fridsma[1].