Abstract

It is important in berth planning and port operation to be accurately familiar with moored ship motions correctly in especially long period component, especially at ports facing the open sea. The phenomenon of moored ship oscillations has been studied for decades by model experiments, field observations and numerical simulations. This paper shows the comparison of numerical simulation result and field observations to discuss how we get more accurate result by the numerical simulations on ship motions. Major unknown factors for surging in the numerical simulations are the condition of mooring ropes and damping factor. Then, we discuss on the effect of the characteristics of mooring system and surge damping factor.

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