Abstract: A jet propulsion boat includes: a boat body; a propulsion device that imparts propulsion force to the boat body to propel the boat body; an engine and an electric motor that drive the propulsion device; and a control device that determines which of an engine mode and an electric mode is to be used as an operation mode of driving the propulsion device in accordance with a condition, the engine mode configured to drive the propulsion device with the engine and the electric mode configured to drive the propulsion device with the electric motor while stopping the engine, and controls the engine and the electric motor to drive the propulsion device in the determined operation mode.

Abstract: A jet propulsion boat includes a boat body, an operation part operated by a driver on the boat body, a turning posture detector that detects a turning posture of the boat body when a driver performs operation of turning the boat body, a behavior adjustment actuator that adjusts a behavior of the boat body, and a controller that controls the behavior adjustment actuator based on the turning posture detected by the turning posture detector.

Abstract: A water vehicle includes: a water vehicle body; a control target mounted on the water vehicle body and controlled to operate the water vehicle body; and processing circuitry configured to acquire requested values used to operate the water vehicle body and generate, based on the requested values, command values to be output to the control target. The processing circuitry switches a control mode between a towing mode in which the water vehicle tows a towed target and a non-towing mode in which the water vehicle does not tow the towed target. When the control mode is the towing mode, the processing circuitry generates, based on the requested value, a second command value that is the command value different from a first command value that is the command value generated based on the requested value when the control mode is the non-towing mode.

Abstract: A personal watercraft includes a watercraft body including: a center elongated protrusion located at a center of the watercraft body in a left-right direction, extending in a front-rear direction, and having an upwardly convex cross-sectional shape; a drainage channel outward of and adjacent to the center elongated protrusion in the left-right direction, lying along the center elongated protrusion in the front-rear direction, extending rearward and outward in the left-right direction, and having a downwardly convex cross-sectional shape; and an outside elongated protrusion outward of and adjacent to the drainage channel in the left-right direction, lying along the drainage channel in the front-rear direction, having an upwardly convex cross-sectional shape, and facing the drainage channel from outside in the left-right direction.

Abstract: An operation assistance system for a small watercraft includes: a position specification unit that specifies an abnormality occurrence position, which is a position where an abnormality has occurred, when the abnormality has occurred in a small watercraft; a transmission unit that transmits information on the abnormality occurrence position specified by the position specification unit; and a processing circuit, in which the processing circuit includes a storage unit that stores information on the abnormality occurrence position transmitted from the transmission unit, and an information provision unit that creates predetermined operation assistance information based on information on the abnormality occurrence position stored in the storage unit and transmits the created operation assistance information.

Abstract: A personal watercraft includes: a watercraft body including a boarding section on which a driver boards and a sub-boarding section on which a mounted object other than the driver is mounted; a mounted object overboard detection unit that detects that the mounted object has fallen overboard from the watercraft body; and a notification unit that performs notification control to notify the driver of the falling overboard through a specific control target when the mounted object overboard detection unit detects that the mounted object has fallen overboard.

Abstract: A personal watercraft includes a ship body and a recovery water passage. The ship body includes a deck and a hull. The recovery water passage is provided in the hull, and includes a water intake opening through which water can be taken in when the ship body plains on a water surface, and a discharge opening through which the taken water is discharged. The recovery water passage is formed with a filter accommodation space that accommodates a filter that traps minute foreign matters contained in water flowing through the recovery water passage.

Abstract: A small watercraft system includes: a watercraft body; a watercraft body manipulation member through which a watercraft body manipulation command is input by an operator; a drive source that allows the watercraft body to plane; a steering device that allows the watercraft body to be steered; and a control device that controls the drive source and the steering device to operate the watercraft body. The control device determines whether a mode switching condition is satisfied, the mode switching condition including an operator's absence condition that the operator is absent from the watercraft body. Upon determining that the mode switching condition is satisfied, the control device executes an operator-absent manipulation mode in which the control device moves the watercraft body by controlling the drive source and the steering device based on an operator-absent manipulation command independent of the watercraft body manipulation command.

Abstract: A small planing watercraft with an imaging device includes: the imaging device incorporated in the small planing watercraft, and capturing an image of surroundings of the small planing watercraft; and a display device incorporated in the small planing watercraft at a location where the display device is recognizable by an operator of the small planing watercraft, and displaying the image of surroundings captured by the imaging device.

Abstract: A personal watercraft includes a watercraft body including a deck. The deck includes a side-opening storage recessed inward to accommodate items. The side-opening storage has an opening facing outward in a width direction of the watercraft body.

Abstract: A small planing watercraft includes: a body; a seat located above the body; a steering handle located above the body and forward of the seat; and an additional part holding mount secured to the handle and disposed forward of a rear surface of the handle.

Abstract: A small watercraft system includes: a watercraft body; a watercraft body manipulation member through which a watercraft body manipulation command is input by an operator; a drive source that allows the watercraft body to plane; a steering device that allows the watercraft body to be steered; and a control device that controls the drive source and the steering device to operate the watercraft body. The control device determines whether a mode switching condition is satisfied, the mode switching condition including an operator's absence condition that the operator is absent from the watercraft body. Upon determining that the mode switching condition is satisfied, the control device executes an operator-absent manipulation mode in which the control device moves the watercraft body by controlling the drive source and the steering device based on an operator-absent manipulation command independent of the watercraft body manipulation command.

Abstract: A personal watercraft includes a watercraft body including: a center elongated protrusion located at a center of the watercraft body in a left-right direction, extending in a front-rear direction, and having an upwardly convex cross-sectional shape; a drainage channel outward of and adjacent to the center elongated protrusion in the left-right direction, lying along the center elongated protrusion in the front-rear direction, extending rearward and outward in the left-right direction, and having a downwardly convex cross-sectional shape; and an outside elongated protrusion outward of and adjacent to the drainage channel in the left-right direction, lying along the drainage channel in the front-rear direction, having an upwardly convex cross-sectional shape, and facing the drainage channel from outside in the left-right direction.

Abstract: A personal watercraft includes: a watercraft body; a handle located above the watercraft body; a seat assembly including at least one straddle seat located rearward of the handle; and at least one mounting adjuster configured to mount the straddle seat on the watercraft body and allow the straddle seat to be positionable on the watercraft body in a plurality of mounting positions arranged in a front-rear direction.

Abstract: A personal watercraft includes: a watercraft body including a cargo-carrying surface; and at least one anchor rail mounted on the watercraft body, the anchor rail being adjacent to the cargo-carrying surface and exposed to an environment outside the watercraft body.

Abstract: A personal watercraft includes a watercraft body including a deck. The deck includes a side-opening storage recessed inward to accommodate items. The side-opening storage has an opening facing outward in a width direction of the watercraft body.

Abstract: A small planing watercraft with an imaging device includes: the imaging device incorporated in the small planing watercraft, and capturing an image of surroundings of the small planing watercraft; and a display device incorporated in the small planing watercraft at a location where the display device is recognizable by an operator of the small planing watercraft, and displaying the image of surroundings captured by the imaging device.

Abstract: A personal watercraft includes: a watercraft body including a hull and a deck covering an upper portion of the hull; a light emitter supported by the watercraft body; and a protection cover covering the light emitter and permeable to light emitted by the light emitter, wherein the watercraft body includes a flow-regulating structure, and the flow-regulating structure includes: a fluid inlet through which an external fluid enters the watercraft body; and an upper flow-regulating wall and a lower flow-regulating wall that are opposed to each other in an up-down direction, the upper and lower flow-regulating walls being located between the fluid inlet and the protection cover to regulate flow of the fluid entering the watercraft body through the fluid inlet and moving toward the protection cover.

Abstract: A personal watercraft includes: a watercraft body including a hull and a deck covering an upper portion of the hull; a light emitter supported by the watercraft body; and a protection cover covering the light emitter and permeable to light emitted by the light emitter, wherein the watercraft body includes a flow-regulating structure, and the flow-regulating structure includes: a fluid inlet through which an external fluid enters the watercraft body; and an upper flow-regulating wall and a lower flow-regulating wall that are opposed to each other in an up-down direction, the upper and lower flow-regulating walls being located between the fluid inlet and the protection cover to regulate flow of the fluid entering the watercraft body through the fluid inlet and moving toward the protection cover.

Abstract: A personal watercraft includes: a watercraft body including a cargo-carrying surface; and at least one anchor rail mounted on the watercraft body, the anchor rail being adjacent to the cargo-carrying surface and exposed to an environment outside the watercraft body.