Abstract: Mathematical model of yacht is one of the key technologies for the development of yacht simulator. According to the separate model of MMG (Maneuvering Model Group), a planar motion model of yacht was established. The hydrodynamic coefficients were obtained through ship model test by using PMM (Planar Motion Device). Hydrodynamic forces and moments acting on the hull and propeller and rudder were calculated respectively. Ship motion equations were solved by means of the fourth order Runge-Kutta method, and ship motion parameters were achieved. Simulated program was coded through Visual Studio 2013, and simulations of three yachts were done. Comparisons between simulated data and ship model test data show that the established model of yacht can meet the requirement of yacht simulator.

Key words: yacht, mathematical model of ship motion, yacht simulator, Marine Simulation