at the critical frequency ωU/g=0.25, which is excited by the impulsive start-up of the vessel's motion. The wavelengths associated with this critical transient oscillation are often too long to be handled by the adopted extend of free surface computational domain and absorbing artificial beach.

Future extensions of the present formulation and solution scheme include relaxation of the body boundary condition linearization, in order to model large-amplitude ship motions, and solution of the wave flow past ships advancing along arbitrary curvilinear paths which addresses the problem of ship maneuvering in the presence of ambient waves.

ACKNOWLEDGEMENTS

This study has been supported by Det Norske Veritas Research AS.

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