Prediction of turn and zigzag maneuvers with the hydrodynamic derivatives obtained by SQCM.

One of the approaches for numerical prediction of the ship maneuvering in still water is based on the lifting theory. In this paper, a numerical method for the fast prediction of the maneuvering motion of the trimaran in still water is developed based on the Source and Quasi Continuous Vortex Lattice Method (SQCM). By the SQCM, the captive model test of the trimaran could be simulated, and the corresponding hydrodynamic coefficients could be obtained. Combined with the MMG maneuvering motion model, the rapid forecasting of the maneuvering motion characteristics of the trimaran is realized. The numerical method is validated by comparison with the tank test, and the turn and zigzag maneuvers of trimaran of different side-hull arrangements at various speeds are predicted. • The captive model test of the trimaran are simulated to obtain the force, moment, and hydrodynamic derivatives by the SQCM method. • The turn and zigzag maneuvers of the trimaran are predicted by the MMG model and the hydrodynamic derivatives. [ABSTRACT FROM AUTHOR]