Mitsui Engineering and Shipbuilding Company Limited

Japan Agency for Marine-Earth Science and Technology

Mitsui E&s Shipbuilding Co., Ltd.

Koh Murata

Hiroshi Yamaguchi

Eigou Miyazaki

Kazuyuki Igarashi

Masakatsu Saito

Satoru Nagase

A maneuvering system for a ship provided with, in the stern, a port-side propulsion system, and a starboard-side propulsion system. For controlling the system, a forward or backward force of the shipis obtained by the difference between the forward and backward propulsion forces of the propulsion systems and a first turning moment in a turning direction of the ship generated by the propulsion forces is offset by a second turning moment in the turning direction of the ship generated by steering a port-side rudder, whereby the ship moves in a transversal manner toward its starboard side while rotation of the ship is avoided. A high degree of maneuverability is thereby achieved with a relatively simple maneuvering operation.

Ship maneuvering system, ship, and ship maneuvering method

An automatic vessel position holding control method for holding a vessel position and a vessel heading of a vessel on the ocean in order to reduce a positional deviation and a heading deviation sharply as compared with the conventional automatic vessel position holding control by performing feedforward control for estimating and then compensating for at least one of a wave drifting force and a wave drifting moment that act on the vessel, wherein a vessel position holding control is performed that includes such controls as estimating waves entering the vessel from motion thereof, calculating at least one of the wave drifting force and the wave drifting moment from the estimated waves and performing feedforward control for at least one of the calculated wave drifting force and the calculated wave drifting moment.

Automatic vessel position holding control method and controller

Growing community of inventors

Tamano, Japan

Koh Murata