In the 1st report, the authors reported the development of an experimental system to measure hydrodynamic forces acting on fully captive models of planing craft at high speed (maximun speed=15m/s). Following this report, three-component hydrodynamic forces acting on series models towed by the system are measured to know fundmental characteristics of them with high speed up to Fn=6.0. It is shown that the residual resistance coefficient in terms of the displacement is not so sensitive to the hull form in very high speed. A simulation of the attitude and resistance of a craft using a database of measured hydrodynamic forces is also carried out to be compared with experimental results of a conventional resistance test. The comparison shows that the simulation results are in fairly good agreement with the experimental results at high speed.
