Method for Controlling an Unmanned Surface Vessel

Abstract

This patent describes a method for steering an unmanned surface vessel consisting of a hull, keel, and non-self-tacking rigid wing sail. Unlike conventional vessels, it doesn't require a rudder. Steering is achieved by rotating the wing sail around a vertical axis using an actuator. The center of lateral resistance is spaced aft of the center of windage, balancing the vessel to the wind. The vessel maintains various angles relative to the wind and holds a port or starboard tack without active steering. The sail position only needs changing when a new course is desired. The vessel can progress at all angles to the wind, whether by a zigzagging course or a straight line. This method eliminates the need for an active rudder to maintain course, reducing power consumption and component wear.

1 . A method for steering an unmanned surface vessel, comprising:
 a) a rudderless hull;   b) a keel; and   c) non-self-tacking wing sail controlled by an actuator, wherein the center of effort is placed ahead of the center of lateral resistance so the vessel remains balanced at different angles to the wind and remains on port or starboard tack depending on the wing-sail angle relative to the hull, and the direction of travel is changed by adjusting the angle of the sail.   
     
     
         2 . The unmanned surface vessel control system of  claim 1 , further comprising a processor connected to an electronic navigation system, wherein the processor periodically checks the boat's position and adjusts the sail position based on programmed settings or AI-derived decisions. 
     
     
         3 . The unmanned surface vessel control system of  claim 1 , further comprising a remote communication and telemetry system, enabling a human operator to monitor the vessel's status and send commands to change the sail position as required. 
     
     
         4 . An unmanned surface vessel of  claims 1, 2, or 3 , further comprising two or more sails. 
     
     
         5 . A control system for a boat fitted with an auxiliary propeller propulsion system, comprising:
 a) a rudderless hull;   b) a keel; and   c) non-self-tacking wing sail controlled by an actuator, wherein the center of effort is placed ahead of the center of lateral resistance so the vessel remains balanced at different angles to the wind and remains on port or starboard tack depending on the wing-sail angle relative to the hull, and the direction of travel is changed by adjusting the angle of the sail.   d) a rudder selectively operable in propeller propulsion mode, wherein the rudder is locked in neutral position during the sailing mode.   
     
     
         6 . The sailboat control system of claim  6 , wherein the auxiliary propeller propulsion system is operable when wind conditions are insufficient for sailing or for tight maneuvering. 
     
     
         7 . The sailboat control system of  claim 6 , further comprising a control mechanism that switches between the sailing mode and the propulsion mode based on remote user inputs or predetermined settings executed by an onboard processor. 
     
     
         8 . The sailboat control system of  claim 6 , wherein the actuator adjusts the angle of the wing sail automatically based on wind conditions, and the rudder remains locked in the neutral position during the sailing mode. 
     
     
         9 . The sailboat control system of  claim 6 , wherein the rudder is operable independently from the wing sail when the boat is in the propulsion mode.