With the model tests and wave pattern analysis on a high speed catamaran having asymmetrical demihulls,the wavemaking characteristics of individual demihull and two arrangement forms of catamaran and the relation to its motion states have been studied.

This problem includes nonlinear diffraction problem and nonlinear wave making problem.

Corresponding numerical results of wave-making calculations for high-speed ships using higher-order panel method are encouraging.

Based on the linear wave-making numerical method, the investigation on nonlinear wave-making numerical method by using a Rankine source method is presented in this paper.

A transom-stern boundary condition,derived from the typical physical model for transom-stern flow,was applied in the numerical computations for the wave-making resistance of the high-speed multi-hull ships.

<abstract> this article, seven kinds of container ship bulbous bow design have been built up according to the length, height and sectional area of bulbous bow, and the relationship between average wave making energy and bulbous bow geometric factors under designed ship speed has been respectively calculated by CFD method to provide necessary information for ship lines optimum design.

The panel method based on the time domain sourcedistribution on the ship mean wetted hull surface was used to perform the wave makingcomputations fo.