Ship Maneuvering Motions in the Proximity of Bank

Abstract

A motion equation for a maneuvering ship in the proximity of fixed obstacle is derived within potential theory. The equation includes rationally added mass change and hydrodynamic forces such as bank suction force arising due to presence of the obstacle. Solving the motion equation, ship maneuverabilty in the proximity of non-uniform banks is simulated under the various initial conditions. Then, the added mass and the hydrodynamic forces are calculated using a 3D panel method under the assumption of rigid wall free surface in the time cycle where the motion equation is numerically solved. Hydrodynamic interaction between bank and ship is consistently included through such the procedure. The maneuvering motion for a ferry in the proximity of the bank is realistically demonstrated.