Thrust Generation of a Fin Attached to a Ship in Waves

Abstract

This is a study of thrust generation of a fin attached to a ship in waves. A high aspect ratio fin which is holded by a spring system is placed horizontally in front of the bow. This can generate big thrust due to its vertical motion and wave orbital velocities. Resistance increase in waves can be reduced, since that a fin has a effect of the reduction of the ship motion. In the present paper, ship and fin motion, resistance increase of a main hull, and thrust generation by a fin are calculated. Important relationships between thrust generation and some factors such as fin location is clarified.