A study on the sensitivity analysis of the hydrodynamic derivatives on the maneuverability of KVLCC2 at low speeds in shallow water

초록

To assess the maneuverability of ships in shallow water at the early design stage, reliable simulation models which present shallow water effect are required. However, studies on the maneuverability of ship at low speeds in shallow water have been performed less than maneuverability in deep water. Also, the limitation of model that the effects of the keel clearance on maneuverability are applied to has been validated through previous studies. In this study, the maneuverability character-istics of the ship sailing in shallow water at low speed are evaluated by applying the mathematical model considering the shallow water effect. And the sensitivity analysis on shallow water maneuvering simulation is performed in order to deter-mine hydrodynamic derivatives which are necessary to be derived exactly due to the limitation of the shallow water model used in previous studies. Through this study, it could be confirmed that great importance of estimation of maneuvera-bility could be found through the sensitivity index factor of hydrodynamic derivatives changing in the situation operating the shallow water at low speed.