Title: Safety Evaluation of Anchored Vessel Considering Dynamic Mooring and Wave Diffraction
Abstract: The offshore harbor refugee is one of the most important topics in harbor planning and operation. Numerical simulations have been improved, however, they do not consider dynamic chain forces and wave diffraction in coastal area. The influence of dynamic chain forces is compared with the static catenary method. Ship motions become irregular, and the chain tension is much larger. Anchored ship motions are reproduced by considering the dynamic chain analysis and wave diffraction due to the Boussinesq Equations. New simulation method can improve the accuracy against our previous models. The effectiveness of two anchoring is verified. Simulated results show that the two anchoring is not effective in heavy seas at all. It is necessary to reconsider the current definition of offshore harbor refuge as the new stage of port planning.