Abstract: The method for simulating parameters of ship’s roll equation with the platform is analyzed. The mathematical model of ship-tank system is studied based on this principle, and its damping moment coefficient obtained. The damping coefficient of platform-tank model is calculated with a reduced scale. Additionally, aiming at the characteristic of platform without damping item, the function of the physical system is derived. Simulation curves are analyzed and the statistical data compared. The results show that output of the platform-tank model is consistent with that of the ship-tank model.

Key words: anti-rolling tank, platform, damping coefficient