Basic Research on the Directional Wave Spectrum at an Arbitrary Point in a Harbor

Abstract

In harbors affected by ocean swells, cargo handlings are often interrupted as a result of severe ship motions. In order to estimate the moored ship motions in a harbor, not only wave height, but also wave periods and wave directions must be given. Nevertheless most traditional methods present only wave height distribution in the harbor. In this paper, Takayama's method is improved and a new method is proposed to estimate a directional wave spectrum at an arbitrary berth in the harbor.