A method for controlling a marine vessel having first and second steering nozzles and first and second trim deflectors comprises generating at least a first set of actuator control signals and a second set of actuator control signals. The first set of actuator control signals is coupled to and controls the first and second steering nozzles, and the second set of actuator control signals is coupled to and controls the first and second trim deflectors. The acts of generating and coupling the first set of actuator control signals and the second set of actuator control signals result in inducing any of a net yawing force, a net rolling force, and a net trimming force to the marine vessel without inducing any other substantial forces to the marine vessel by controlling the first and second steering nozzles and the first and second trim deflectors. Also disclosed is a system for controlling a marine vessel.

A method for controlling a marine vessel having first and second steering nozzles and first and second trim deflectors comprises generating at least a first set of actuator control signals and a second set of actuator control signals. The first set of actuator control signals is coupled to and controls the first and second steering nozzles, and the second set of actuator control signals is coupled to and controls the first and second trim deflectors. The acts of generating and coupling the first set of actuator control signals and the second set of actuator control signals result in inducing any of a net yawing force, a net rolling force, and a net trimming force to the marine vessel without inducing any other substantial forces to the marine vessel by controlling the first and second steering nozzles and the first and second trim deflectors. Also disclosed is a system for controlling a marine vessel.

A ship including an engine, a jet propulsion device, a ship controller, and a ship position detection unit, in which the jet propulsion device includes a nozzle that ejects a jet stream generated by the driving force output from the engine, and a bucket that changes a direction of the jet stream, the position of the bucket includes at least a forward-side intermediate position between the forward position and the neutral position, the ship controller has a ship fixed point holding mode in which feedback control of the engine and the jet propulsion device is performed based on a deviation between a preset target ship position and the actual ship position, and both control of the position of the bucket including the forward-side intermediate position and control of a rotational speed of the engine are performed in the ship fixed point holding mode.

A ship including an engine, a jet propulsion device, a ship controller, and a ship position detection unit, in which the jet propulsion device includes a nozzle that ejects a jet stream generated by the driving force output from the engine, and a bucket that changes a direction of the jet stream, the position of the bucket includes at least a forward-side intermediate position between the forward position and the neutral position, the ship controller has a ship fixed point holding mode in which feedback control of the engine and the jet propulsion device is performed based on a deviation between a preset target ship position and the actual ship position, and both control of the position of the bucket including the forward-side intermediate position and control of a rotational speed of the engine are performed in the ship fixed point holding mode.

A personal watercraft includes: a watercraft body; an operation unit operated by a driver aboard the watercraft body; a turning attitude detection unit that detects a turning attitude that is an attitude of the watercraft body when the driver performs operation of turning the watercraft body; a behavior adjustment actuator that adjusts behavior of the watercraft body; and a control unit that controls the behavior adjustment actuator based on the turning attitude detected by the turning attitude detection unit.

A personal watercraft includes: a watercraft body; an operation unit operated by a driver aboard the watercraft body; a turning attitude detection unit that detects a turning attitude that is an attitude of the watercraft body when the driver performs operation of turning the watercraft body; a behavior adjustment actuator that adjusts behavior of the watercraft body; and a control unit that controls the behavior adjustment actuator based on the turning attitude detected by the turning attitude detection unit.

The application relates to systems and techniques for remotely navigating a marine vessel. The systems can include a dynamic positioning system and/or a marine location management system for remotely navigating a marine vessel. The marine location management system can include a communication module for receiving a geographic location of the marine vessel and transmitting a navigation plan to a vessel control system. The marine location management system can also include a processor adapted to determine the geographical coordinates of the marine location and the marine vessel. In some cases, the marine vessel can include a thruster system adapted to receive the navigation plan and determine a set of thrust vectors based on the navigation plan.

The application relates to systems and techniques for remotely navigating a marine vessel. The systems can include a dynamic positioning system and/or a marine location management system for remotely navigating a marine vessel. The marine location management system can include a communication module for receiving a geographic location of the marine vessel and transmitting a navigation plan to a vessel control system. The marine location management system can also include a processor adapted to determine the geographical coordinates of the marine location and the marine vessel. In some cases, the marine vessel can include a thruster system adapted to receive the navigation plan and determine a set of thrust vectors based on the navigation plan.

A system for controlling a marine vessel having first and second steering nozzles and corresponding first and second reversing buckets, comprises a processor configured to receive a first vessel control signal including at least a component corresponding to a translational thrust command in a port direction, and that is configured to provide a set of actuator control signals coupled to and control the first and second reversing buckets. The processor is configured to provide the set of actuator control signals so as to maintain the first reversing bucket substantially in a first discrete position and the second reversing bucket substantially in a second discrete position as long as the first vessel control signal includes a component corresponding to a translational thrust command in the port direction.

A system for controlling a marine vessel having first and second steering nozzles and corresponding first and second reversing buckets, comprises a processor configured to receive a first vessel control signal including at least a component corresponding to a translational thrust command in a port direction, and that is configured to provide a set of actuator control signals coupled to and control the first and second reversing buckets. The processor is configured to provide the set of actuator control signals so as to maintain the first reversing bucket substantially in a first discrete position and the second reversing bucket substantially in a second discrete position as long as the first vessel control signal includes a component corresponding to a translational thrust command in the port direction.