Capsizing Probability of an Indonesian RoRo Passenger Ship in Irregular Beam Seas

Abstract

The annual capsizing probability was calculated for an Indonesian RoRo passenger ship in Indonesia and Japanese water areas. The calculation method is based on an uncoupled roll equation with the piece-wise linear restoring curves and the existing wave statistics. Numerical results show the quantitative difference between different water areas and positive possibility to determine the minimum metacentric height against capsizing, while they remarks the need for longer wave measurements in Indonesian waters and for the precise prediction of roll damping. Further, the simplified method for the annual capsizing probability is proposed.