Abstract: An information processing method includes displaying a water-based map on a display unit, accepting an operation by an administrator, storing a selected tile by the administrator in a storage unit as a particular tile from among a plurality of tiles resulting from division of an area on the water-based map into a mesh pattern, detecting a present location of a ship at a predetermined time interval, and notifying an alert when the ship enters a water area corresponding to the particular tile.

Abstract: A control device of a marine vessel includes a wireless master unit to wirelessly communicate with a wireless slave unit possessed or worn by a vessel operator, and a processor configured or programmed to function as a detecting unit to detect that an engaging portion of a lanyard connectable to a connecting portion provided on a hull of the marine vessel is detached from the connecting portion, an obtaining unit to obtain a physical quantity that indicates at least one of a rotation speed of a drive source that propels the hull and a vessel speed, a judging unit to judge a state of wireless communication between the wireless master unit and the wireless slave unit, and a control unit to control the drive source based on a detection result obtained by the detecting unit, the physical quantity obtained by the obtaining unit, and a judgment result obtained by the judging unit.

Abstract: An automatic watercraft maneuvering system includes a watercraft and a communication device.

Abstract: A boat control system includes an imager to image a user towed by a hull, an image processor to determine a predetermined state of the user from an image captured by the imager, and a controller configured or programmed to perform a control to adjust a thruster operable to change a propulsion state of the hull based on the predetermined state of the user determined by the image processor to change the propulsion state of the hull.

Abstract: A marine vessel maneuvering system includes an engine and a controller configured or programmed to control a marine vessel. The controller is configured or programmed to set a control of the engine for each destination based on at least one of information indicating the destination acquired incident to a setting operation of the destination by a distributor or information indicating the destination acquired from a ground-based or sea-based base station at the destination.

Abstract: A small boat includes an output that outputs to an engine controller an output signal having an output value at which a throttle opening degree increases as an operation amount of a throttle operator increases, and outputs to the engine controller the output signal having, as an upper limit, a limit output value at which the throttle opening degree is smaller than that at a maximum output value at which the throttle opening degree is maximum.

Abstract: A small boat includes an output that outputs to an engine controller an output signal having an output value at which a throttle opening degree increases as an operation amount of a throttle operator increases, and outputs to the engine controller the output signal having, as an upper limit, a limit output value at which the throttle opening degree is smaller than that at a maximum output value at which the throttle opening degree is maximum.

Abstract: A marine vessel includes a distance detector that measures a distance to an object, a speed detector that detects a vessel speed, and a controller that executes on-shore/off-shore assistance control to control a propulsion unit to generate a thrust that moves a vessel body in a direction opposite to a direction toward the object based on the distance to the object measured by the distance detector and the vessel speed detected by the speed detector.

Abstract: A deflector control portion in a jet propulsion boat causes a deflector to swing by controlling a deflector drive mechanism in response to an operation of a shift operating portion. The deflector control portion causes the deflector to move to a first trim position when the shift operating portion is switched to a forward movement shift position. The deflector control portion causes the deflector to move to a second trim position when the shift operating portion is switched to an operating shift position.

Abstract: A marine vessel includes a distance detector that measures a distance to an object, a speed detector that detects a vessel speed, and a controller that executes on-shore/off-shore assistance control to control a propulsion unit to generate a thrust that moves a vessel body in a direction opposite to a direction toward the object based on the distance to the object measured by the distance detector and the vessel speed detected by the speed detector.

Abstract: A jet propulsion watercraft includes a vessel body, an engine, a jet propulsion unit, a weight information obtaining processor, an engine controller, and a target rotational speed determining processor. The engine is accommodated in the vessel body. The jet propulsion unit is driven by the engine and propels the vessel body. The weight information obtaining processor obtains weight information regarding a weight of the vessel body. The engine controller controls an engine rotational speed such that a vessel velocity reaches a predetermined set velocity. The target rotational speed determining processor determines a target engine rotational speed corresponding to the set velocity in accordance with the weight information. The engine controller controls the engine rotational speed such that the vessel velocity reaches the set velocity based on the target engine rotational speed determined in accordance with the weight information.

Abstract: A watercraft includes a vessel body, a propulsion mechanism, an engine, a shift operating unit, a vessel body state determining unit, and an engine controlling unit. The propulsion mechanism is switched among a forward thrust state to forwardly move the vessel body, a rearward thrust state to rearwardly move the vessel body, and a neutral state to maintain the vessel body in a stationary state. The shift operating unit is configured to move to a forward thrust position, a rearward thrust position, and a neutral position. The vessel body state determining unit is programmed and configured to determine whether or not the vessel body is in the stationary state. The engine controlling unit is programmed and configured to stop the engine when the shift operating unit is located in the neutral position and the vessel body state determining unit determines that the vessel body is in the stationary state.

Abstract: A jet propelled watercraft includes a prime mover, a jet pump driven by the prime mover and jetting water from a jet port, a reverse gate changing a direction of the jet flow jetted from the jet pump, a shift actuator capable of moving a position of the reverse gate to a plurality of shift positions including a forward drive position, at which the direction of the jet flow is toward the rear of the body, a reverse drive position, at which the direction of the jet flow is toward the front of the body, and an intermediate position in between these positions, and a controller configured or programmed to execute a stoppage shift control of controlling the shift actuator to move the reverse gate to the forward drive position when stoppage of the prime mover is detected.

Abstract: A jet propelled watercraft includes a prime mover, a jet pump driven by the prime mover and jetting water from a jet port, a reverse gate changing a direction of the jet flow jetted from the jet pump, a shift actuator switching a position of the reverse gate among a plurality of shift positions, a reverse gate position detector detecting the position of the reverse gate, and a controller configured or programmed to execute a shift control of setting a target shift position of the reverse gate and controlling the shift actuator to move the reverse gate to the target shift position and execute an error judgment of judging that an error has occurred when the position detected by the reverse gate position detector differs from a control position.

Abstract: A jet propulsion watercraft includes a vessel body, an engine, a jet propulsion unit, a weight information obtaining processor, an engine controller, and a target rotational speed determining processor. The engine is accommodated in the vessel body. The jet propulsion unit is driven by the engine and propels the vessel body. The weight information obtaining processor obtains weight information regarding a weight of the vessel body. The engine controller controls an engine rotational speed such that a vessel velocity reaches a predetermined set velocity. The target rotational speed determining processor determines a target engine rotational speed corresponding to the set velocity in accordance with the weight information. The engine controller controls the engine rotational speed such that the vessel velocity reaches the set velocity based on the target engine rotational speed determined in accordance with the weight information.

Abstract: A deflector control portion in a jet propulsion boat causes a deflector to swing by controlling a deflector drive mechanism in response to an operation of a shift operating portion. The deflector control portion causes the deflector to move to a first trim position when the shift operating portion is switched to a forward movement shift position. The deflector control portion causes the deflector to move to a second trim position when the shift operating portion is switched to an operating shift position.

Abstract: A jet propelled watercraft includes a prime mover, a jet pump driven by the prime mover and jetting water from a jet port, a reverse gate changing a direction of the jet flow jetted from the jet pump, a shift actuator capable of moving the reverse gate to a plurality of shift positions, a reverse gate operator configured to set a position of the reverse gate, and a controller configured or programmed to prohibit startup of the prime mover when it is determined that the reverse gate operator is being operated.

Abstract: A deflector control portion in a jet propulsion boat causes a deflector to swing by controlling a deflector drive mechanism in response to an operation of a shift operating portion. The deflector control portion causes the deflector to move to a first trim position when the shift operating portion is switched to a forward movement shift position. The deflector control portion causes the deflector to move to a second trim position when the shift operating portion is switched to an operating shift position.

Abstract: A jet propelled watercraft includes a prime mover, a jet pump driven by the prime mover and jetting water from a jet port, a reverse gate changing a direction of the jet flow jetted from the jet pump, a shift actuator capable of moving the reverse gate to a plurality of shift positions, a reverse gate operator configured to set a position of the reverse gate, and a controller configured or programmed to prohibit startup of the prime mover when it is determined that the reverse gate operator is being operated.

Abstract: A jet propelled watercraft includes a prime mover, a jet pump driven by the prime mover and jetting water from a jet port, a reverse gate changing a direction of the jet flow jetted from the jet pump, a shift actuator capable of moving a position of the reverse gate to a plurality of shift positions including a forward drive position, at which the direction of the jet flow is toward the rear of the body, a reverse drive position, at which the direction of the jet flow is toward the front of the body, and an intermediate position in between these positions, and a controller configured or programmed to execute a stoppage shift control of controlling the shift actuator to move the reverse gate to the forward drive position when stoppage of the prime mover is detected.