A STUDY ON THE MANOEUVRABILITY OF A SHIP WITH TWIN POD PROPULSION SYSTEM

Abstract

To improve ship's maneuverability and carry out special goal POD propulsion system was equipped as propulsion and maneuvering system. To predict the maneuverability of a ship with POD propulsion system HPMM tests and POD open water test are carried out. In this paper modular model with 4 degree of freedom of a ship with twin POD propulsion system is presented. To use modular model the forces of POD propulsion system are measured separately from the hull forces. The measured forces and moments are analyzed by using modular model and whole ship model. The simulation results of modular model are compared with those of whole ship model. And free running tests were also carried out. Comparisons were made between simulation of modular model and free running data to validate the mathematical model. The simulation data shows good agreements with free running data for POD forces as well as ship motions. From the present study it is possible to analyze HPMM tests of a ship with twin POD propulsion system by using modular model.