This study examines how to assure safe mooring under influence of long period waves and swells for a passenger ship (50, 142GT) and a large wood-chip carrier (40, 245GT) by means of numerical ship motion simulations. In the Port of Shingu, an offshore breakwater is still under construction, which allows the incident waves from the outer sea to reach the quay wall (depth of the water 11m) directly depending on the wave direction. This requires urgent countermeasures against unfavorable motion of the moored ships at the wharf in the port. The purpose of this study is to discuss how to secure safe mooring, considering progress of the breakwater construction.
As a result of the study, it is concluded that, while the breakwater should be completed as soon as possible, installation of air-type fenders on the existing quay wall makes mooring of the examined vessels safe even before completion of the breakwater.
