Wind-driven vessel

A wind-driven vessel cruisable by one of wind force, wind force and electric power, or electric power, comprising:

• a. a windmill mechanism having a variable pitch propeller fixed at a horizontal rotary shaft, said horizontal rotary shaft connected to a vertical rotary shaft which rotates in response to the rotation of the horizontal rotary shaft and having a support for said rotary shaft and a rotary device for said support;
• b. a generator rotatably driven by said windmill mechanism;
• c. a storage battery for storing generated current;
• d. an electric motor capable of running on said storage battery;
• e. a screw which can be rotatably driven by at least one of said windmill mechanism and said electric motor;
• f. a control device for controlling propeller pitch, comprising a pitch varying arm, means for driving said arm, and a control means;
• g. a natural wind direction sensor for detecting natural wind direction with respect to the vessel, said natural wind direction sensor capable of measuring cruising direction, cruising speed, synthetic wind direction, ebb and flow direction and speed, said natural wind direction sensor further comprising an operating means for determining the direction of the natural wind from said measured values;
• h. a rotor directional control device to keep the windmill propeller in a direction of the natural wind as sensed by said direction sensor, comprising driving means for driving the rotary device to a given value and fixing the rotary device in a desired position in response to the rotor directional control device based on data from the natural wind direction sensor;
• i. a steer angle control device to determine steer angle in response to wind direction and velocity of the synthetic wind, said steer control device comprising a steer driving means responsive to said steer angle control device based on the measured values of the synthetic wind and the ebb and flow;
• and
• j. a cruise control device to control windmill, generator, and motor revolution in response to each datum of current position and set target position data, current direction and velocity of the natural wind, and direction and velocity of the ebb and flow, so as to set thrust force of the vessel as either one of wind force, electric power, or the wind force and electric power, and to set a cruising course toward the target point in real time.