具輔助風帆之船舶於不同海況中之操控模擬分析

The main purpose of the present study is to establish the motion simulation model for a sail-assisted ship in the seaway, which includes the considerations of the energy saving of the ship. The study based on the six degrees of freedom motions of ship in waves, and then adds the sail force due to the wind sails installed on board. The time domain simulation’s calculation for ship motions in the seaway is treated by the fourth order Runge-Kutta method. To attain the optimal energy saving of the ship, the present study is to control the angle of sail based on the aerodynamic characteristics curve of sail. Based on the set waypoints, we can control the ship to navigate the desired course in different sea states and judge if the benefits of the sail-assisted ship can get by analyzing the sailing time. Further, we also simulate the real navigation from Keelung port to Nagasaki Port to verify the advantage of the sail-assisted ship in the seaway. In summary, the present results show that the sail-assisted ship can indeed achieve economic and ecofriendly benefit.