Prediction of ship squat in restricted waters

The ship squat has important influences on ship hydrodynamic performance. Accurate prediction of the squat is of great significance to correctly evaluate ship hydrodynamic performance and to ensure navigation safety in restricted waters. In this paper, various methods for predicting ship squat are summarized and introduced. A first-order Rankine source panel method is applied to predict the squat of a ship sailing in restricted waters. Numerical results are obtained for container ship KCS in shallow water and shallow channel. The influences of ship speed, water depth and ship-bank distance on the squat are analyzed. The results show that squat is notably affected by ship speed and water depth.