A watercraft includes a steering operator to be operated by a user to steer a watercraft, an operation amount sensor to detect an operation amount of the steering operator, a steering device including a steering actuator to change a steering angle, a steering angle sensor to detect the steering angle, and a steering controller configured or programmed to control the steering actuator according to an output signal of the operation amount sensor and an output signal of the steering angle sensor. The steering controller is configured or programmed to monitor the output signal of the steering angle sensor for an abnormality, feedback-control the steering actuator based on the output signal of the steering angle sensor to achieve a target steering angle when the abnormality is not detected, and feedforward-control the steering actuator based on the output signal of the operation amount sensor when the abnormality is detected.

A trim tab actuator input device for a marine vessel includes a trim tab movement selector that, when selected for a first trim tab, sends a signal to move the first trim tab to effectuate a first roll movement of the marine vessel. When selected for a second trim tab, the selector sends a signal to move the second trim tab to effectuate a second roll movement of the marine vessel. Selection of a state-changing input element changes the trim tab actuator input device between first and second states. When the trim tab actuator input device is in the first state, a display indicates the first position of the first trim tab and/or the second position of the second trim tab. When the trim tab actuator input device is in the second state, the display indicates the first roll movement and/or the second roll movement of the marine vessel.

A system and a method for steering control stabilization of a marine vessel is provided. The system has a steering control device, a control unit and a model simulation device. The steering control device provides control signals in response to manual control inputs from an operator of the marine vessel to the model simulation device. The model simulation device applies the control signals to a simulated model of a marine vessel and provide a resulting position and heading, and their respective rate of change, of the simulated model of the marine vessel to the control unit. The control unit controls a propulsion system of the marine vessel based on a difference between a real-time current position and heading, and their respective rate of change, of the marine vessel and the resulting position and heading, and their respective rate of change, of the simulated model of the marine vessel.

A system and a method for steering control stabilization of a marine vessel is provided. The system has a steering control device, a control unit and a model simulation device. The steering control device provides control signals in response to manual control inputs from an operator of the marine vessel to the model simulation device. The model simulation device applies the control signals to a simulated model of a marine vessel and provide a resulting position and heading, and their respective rate of change, of the simulated model of the marine vessel to the control unit. The control unit controls a propulsion system of the marine vessel based on a difference between a real-time current position and heading, and their respective rate of change, of the marine vessel and the resulting position and heading, and their respective rate of change, of the simulated model of the marine vessel.

A system includes a vision system camera mounted to a marine vessel with an associated field of view of the vessel's environment. The system receives image data from the camera and identifies waves in the marine vessel's environment based on the image data. When the system determines that a wave's height exceeds a threshold and that the current heading of the marine vessel is misaligned with the wave's heading, the system automatically adjusts the vessel's heading to align more closely with the wave's heading.

A steering system (1) is employed in a ship to which left and right propulsors (2L, 2R) are attached. The steering system (1) includes a first input device (11) configured to receive an input of any one of a forward thrust parameter and a reverse thrust parameter of the propulsors, a second input device (15) configured to receive an input of the other of the forward thrust parameter and the reverse thrust parameter of the propulsors, and a controller (17) configured to reflect the forward thrust parameter and the reverse thrust parameter to the propulsors in real time. In the steering system, the first input device and the second input device receive the inputs in parallel when a steering pattern for a ship is set.

The control device includes a control unit. The control unit sets the first intermediate target point within the range of waters when the ship is located outside the range of waters capable of starting the automatic steering to the target docking point. When the distance of the vector connecting the position of the ship and the first intermediate target point and the angle between the bow direction of the ship and the direction of the vector satisfy a predetermined criterion, the control unit formulates a route to be sailed by the ship from the position of the ship to the target docking point via the set first intermediate target point. The control unit automatically steers the ship according to the established route.