Development of a New-Type Hydrofoil Catamaran

4th report : Hydrofoil Interactions and Hydrodynamical Properties of a 4000-ton Type Ship

Abstract

The hydrofoil interaction of hydrofoil catamarans (HC) is studied for HC200A and HC2000. It is revealed that the optimal angle of attack must be determined with careful consideration of interactions including the effect of free-surface deformation by the forward hydrofoil. A design for a 4000 displacement-ton type is presented and its hydrodynamical properties are studied. It is demonstrated that the resistance and motion properties are superior to HC2000 notwithstanding the larger number of hydrofoils.