COMPUTATION OF SHIP INTERACTION FORCES AND MOMENTS IN RESTRICTED WATERWAYS USING THE NUMERICAL CONFORMAL MAPPING METHOD

A two-dimensional "obstacle Green function" of a waterway is formulated using a numerical Schwarz-Christoffel transformation. The computation of unsteady hydrodynamic interactions on ships navigating in restricted waters is then extended to more complicated waterways that have arbitrary polygonal contours. Examples involving various configurations for harbor entrances and water channels are discussed.