Prediction of manoeuvrability of a ship at low forward speed in shallow water

Abstract

In this paper, a mathematical model for a ship manoeuvring with low forward speed in shallow water was suggested. Based on the cross flow model at low forward speed in deep sea, hull, propeller and rudder models were modified to consider the shallow water effects. Static drift and planer motion mechanism tests were performed to obtain the cross flow drag coefficients and hydrodynamic coefficients. To validate suggested mathematical model, numerical simulation results were compared with those of sea-trials. Through comparisons, it was concluded that suggested mathematical model could give proper estimation on turning test results. ？ 2009: the Royal Institution of Naval Architects/Ghent University/Flanders Hydraulics Research.