A method of driving a work body to an obtuse angle relative to a drive body by providing a pivotal mounting of a work body such that it can pivot up to 180 degrees, mounting a drive body at a spaced position above the pivotal mount of the work body, pivotally mounting a first end of an elongated lever arm and pivotally mounting the distal second end to the operative end of the linear actuator and providing a drive arm from the work body to a leverage position on the lever arm between the first and second end. Also, the drive arm is pivotally mounted by the drive arm mount to the lower drive body and a sliding pivot slot pin is received in the linear slot extending along a portion of the drive arm to define a direction and limitation of movement of the drive arm relative to the lever arm.

A method of driving a work body to an obtuse angle relative to a drive body by providing a pivotal mounting of a work body such that it can pivot up to 180 degrees, mounting a drive body at a spaced position above the pivotal mount of the work body, pivotally mounting a first end of an elongated lever arm and pivotally mounting the distal second end to the operative end of the linear actuator and providing a drive arm from the work body to a leverage position on the lever arm between the first and second end. Also, the drive arm is pivotally mounted by the drive arm mount to the lower drive body and a sliding pivot slot pin is received in the linear slot extending along a portion of the drive arm to define a direction and limitation of movement of the drive arm relative to the lever arm.

A control device for a marine vessel includes a hull, a pair of water resistance bodies, and a controller. The pair of water resistance bodies are provided on the hull, one on a left side and one on a right side of the hull, each independently movable between a first position in which a resistance received from water in a predetermined direction is adjustable to a first magnitude, and a second position in which a resistance is adjustable to zero or to a second magnitude smaller than the first magnitude. The controller is configured or programmed to acquire wind speed, acquire tidal current speed, and control is configured or programmed to control the pair of water resistance bodies based on the wind speed and the tidal current speed.

A control device for a marine vessel includes a hull, a pair of water resistance bodies, and a controller. The pair of water resistance bodies are provided on the hull, one on a left side and one on a right side of the hull, each independently movable between a first position in which a resistance received from water in a predetermined direction is adjustable to a first magnitude, and a second position in which a resistance is adjustable to zero or to a second magnitude smaller than the first magnitude. The controller is configured or programmed to acquire wind speed, acquire tidal current speed, and control is configured or programmed to control the pair of water resistance bodies based on the wind speed and the tidal current speed.

A control device for a marine vessel includes a hull, a pair of water resistance bodies, and a controller. The pair of water resistance bodies are provided on the hull, one on a left side and one on a right side of the hull, each independently movable between a first position in which a resistance received from water in a predetermined direction is adjustable to a first magnitude, and a second position in which a resistance is adjustable to zero or to a second magnitude smaller than the first magnitude. The controller is configured or programmed to acquire a relative distance between a buoy, which floats on the water in a free-drifting manner, and the hull. The controller is configured or programmed to control the pair of water resistance bodies based on the relative distance.

A control device for a marine vessel includes a hull, a pair of water resistance bodies, and a controller. The pair of water resistance bodies are provided on the hull, one on a left side and one on a right side of the hull, each independently movable between a first position in which a resistance received from water in a predetermined direction is adjustable to a first magnitude, and a second position in which a resistance is adjustable to zero or to a second magnitude smaller than the first magnitude. The controller is configured or programmed to acquire a relative distance between a buoy, which floats on the water in a free-drifting manner, and the hull. The controller is configured or programmed to control the pair of water resistance bodies based on the relative distance.