89 Simulation of Fast Trimaran Seakeeping Amelioration Using T-foil

Fast trimaran holds excellent performance because of its high transverse stability, large deck, economy of fuel consumption and high speed. However, the highspeed craft can easily make 1œdolphin movement1 in heading seas. The T-foil is the most effective stabilizer for alleviating the pitch and heave motions of fast craft. This work designs an autonomous trimaran motion control system utilizing a T-foil which can control the longitudinal motion of fast trimaran. Numerical simulation results show that the motion control system can satisfactorily improve seakeeping performance of fast trimaran.