In designing of a marine vehicle, derivation of hydrodynamic coefficients of the equations of motion is very important. For derivation of these hydrodynamic coefficient's various methods such as analytical-experimental methods, Computational Fluid Dynamic (CFD) method and model test can be used. Among These methods, due to the limitations of analytical-experimental methods and computational fluid dynamic method, the most accurate method is model testing.
Empirically derived coefficients, which obtain in the marine laboratory, use to simulate the behavior of a marine vessel in the International Maritime Organization (IMO) maneuver test and determine the vessel's maneuverability.
Due to differences in the marine laboratory equipment and test methods and to ensure the accuracy of results, standard models are tested and the results are compared against the results provided by the International Towing Tank Conference (ITTC).Accordingly, this article describes the process of model testing and derivation of the coefficients for the Esso Osaka benchmark vessel, using static and dynamic testing with Horizontal Planar Motion Mechanism (HPMM) in Shohada-e-Khalij-e-Fars national marine laboratory and compare the results with the results provided by the international towing tank conference.