Research on Calculation Method of Wave Load and Mooring Force Based on Time Domain Potential Flow Theory

In order to predict the wave force of moored ships quickly and accurately, based on the unsteady time domain flow theory, the calculation method of wave load and mooring force of LNG ship under full load and ballast conditions is studied. Through short-term forecasting and long-term forecasting, the wave bending moment and wave force of each cross section of the LNG ship, as well as the motion response of LNG ship which have the greatest influence on the wave load are obtained. Based on this, the wave force and motion response is performed, and the mooring point is set according to the actual environmental conditions when the LNG ship is moored at the dock. The mooring force of each cable that meets the specifications and the number of mooring lines required are finally obtained. The research results in this paper can provide a technical support for dock mooring setup and mooring force calculation for similar ship types.