Nowadays, most of the dynamic research on planing ships has been directed towards analyzing the ships motions in either 3-\r\nDOF (degrees of freedom) mode in the longitudinal vertical plane or in 3-DOF or 4-DOF mode in the lateral vertical plane. For\r\nthis reason, the current authors have started a research program of describing the dynamic behavior of planing ships in a 6-DOF\r\nmathematical model. This program includes the developing of a 6-DOF computer simulation program in the time domain. This\r\ntype of simulation can be used for predicting the response of these planing vessels to the environmental disturbances during highspeed\r\nsailing. In this paper, the development of themathematicalmodel will be presented. Furthermore, a discussion will be offered\r\nabout the use of these static contributions in a time domain simulation for modeling the behavior of planing crafts in regular waves.
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