Abstract: A marine debris collection device includes a first debris collector to remove non-minute debris contained in debris floating on water by allowing the debris to flow thereinto together with the water, and a second debris collector to remove minute debris by adsorbing the minute debris onto a microbubble generated when the water flows into the second debris collector from the first debris collector via a connection pipe.

Abstract: A marine debris collection device includes an outer container, an inner container provided inside the outer container so as to be movable in an upward-downward direction with respect to the outer container, a pump to move the inner container downward and cause seawater and debris to flow into the inner container via an opening, and a lower buoyant body detachably attached to a lower portion of the inner container to maintain the opening of the inner container above a water surface when the pump is not driven.

Abstract: A jet propulsion watercraft includes a vessel body, a jet pump that is disposed at the vessel body and that includes a water jet opening, and a first guide that is attached to the vessel body. The jet pump generates a thrust by sucking in water existing around the vessel body and jetting the water from the water jet opening. The first guide receives water flowing on a lateral side of the vessel body and generates a downforce that generates a wake behind the vessel body.

Abstract: A marine vessel includes a hull, a jet pump including an impeller, a plurality of motors, and a transmission to transmit outputs of the plurality of motors to the impeller of the jet pump.

Abstract: A watercraft includes a vessel body, a marine propulsion device and a guide. The marine propulsion device is attached to the vessel body and includes a water stream generator that propels the vessel body. The guide is provided on the vessel body and extends astern of the vessel body and toward a center of the vessel body in a width direction of the vessel body from a position located sideward of the water stream generator. The guide inwardly directs water flowing on one lateral side of the vessel body such that confluent timing of the water flowing on the one lateral side of the vessel body and water flowing on the other lateral side of the vessel body is caused to occur earlier than when the guide is not provided on the vessel body.

Abstract: A jet propulsion watercraft includes a vessel body, a jet pump that is disposed at the vessel body and that includes a water jet opening, and a first guide that is attached to the vessel body. The jet pump generates a thrust by sucking in water existing around the vessel body and jetting the water from the water jet opening. The first guide receives water flowing on a lateral side of the vessel body and generates a downforce that generates a wake behind the vessel body.

Abstract: A boat includes a boat body, a propulsion unit, a steering wheel that turns about a first turning axis and has a circular or substantially circular shape or an arcuate or substantially arcuate shape about the first turning axis, and an operator unit on the steering wheel including a first operator which is located in a first direction with respect to the first turning axis and a second operator which is located in a second direction with respect to the first turning axis, and that performs a throttle operation and a shift operation on the propulsion unit.

Abstract: A watercraft includes a vessel body, a marine propulsion device and a guide. The marine propulsion device is attached to the vessel body and includes a water stream generator that propels the vessel body. The guide is provided on the vessel body and extends astern of the vessel body and toward a center of the vessel body in a width direction of the vessel body from a position located sideward of the water stream generator. The guide inwardly directs water flowing on one lateral side of the vessel body such that confluent timing of the water flowing on the one lateral side of the vessel body and water flowing on the other lateral side of the vessel body is caused to occur earlier than when the guide is not provided on the vessel body.

Abstract: A boat includes a boat body, a propulsion unit, a steering wheel that turns about a first turning axis and has a circular or substantially circular shape or an arcuate or substantially arcuate shape about the first turning axis, and an operator unit on the steering wheel including a first operator which is located in a first direction with respect to the first turning axis and a second operator which is located in a second direction with respect to the first turning axis, and that performs a throttle operation and a shift operation on the propulsion unit.

Abstract: A boat includes a boat body, a propulsion unit, a steering wheel that turns about a first turning axis and has a circular or substantially circular shape or an arcuate or substantially arcuate shape about the first turning axis, and an operator unit on the steering wheel including a first operator which is located in a first direction with respect to the first turning axis and a second operator which is located in a second direction with respect to the first turning axis, and that performs a throttle operation and a shift operation on the propulsion unit.

Abstract: A boat includes a boat body, a propulsion unit, a steering wheel that turns about a first turning axis and has a circular or substantially circular shape or an arcuate or substantially arcuate shape about the first turning axis, and an operator unit on the steering wheel including a first operator which is located in a first direction with respect to the first turning axis and a second operator which is located in a second direction with respect to the first turning axis, and that performs a throttle operation and a shift operation on the propulsion unit.

Abstract: A temperature sensor includes a temperature detecting section including a temperature-sensitive element, a cylindrical housing disposed on a proximal end side of the temperature detecting section, a connector member disposed on a proximal end side of the housing, and a buffer member which is elastically deformable and disposed between the connector member and the housing. The connector member includes a connector counter surface located on a side of the housing in an axial direction along a longitudinal axis of the housing. The housing includes a housing counter surface located opposite to the connector counter surface. The housing counter surface and the connector counter surface are separated from each other so that a gap is present therebetween. The buffer member is disposed deformably in the gap so that the connector member and the housing are movable relative to each other in the axial direction.

Abstract: A temperature sensor includes a temperature detecting section including a temperature-sensitive element, a cylindrical housing disposed on a proximal end side of the temperature detecting section, a connector member disposed on a proximal end side of the housing, and a buffer member which is elastically deformable and disposed between the connector member and the housing. The connector member includes a connector counter surface located on a side of the housing in an axial direction along a longitudinal axis of the housing. The housing includes a housing counter surface located opposite to the connector counter surface. The housing counter surface and the connector counter surface are separated from each other so that a gap is present therebetween. The buffer member is disposed deformably in the gap so that the connector member and the housing are movable relative to each other in the axial direction.

Abstract: A marine vessel includes a hull, a jet pump disposed outside the hull, and an electric motor arranged to drive the jet pump. The jet pump includes a water inlet, a jet nozzle disposed posterior to the water inlet, and a flow path connecting the water inlet and the jet nozzle, and is arranged to jet water, taken in through the water inlet, through the jet nozzle. The electric motor is disposed between the hull and the jet pump.

Abstract: A vessel includes a first propulsion mechanism, at least one second propulsion mechanism, and a hull. The first propulsion mechanism is arranged to generate thrust by an internal combustion engine. The second propulsion mechanism is arranged to generate thrust by an electric motor. The first propulsion mechanism and the second propulsion mechanism are disposed in the hull. The first propulsion mechanism and the second propulsion mechanism are mutually independent. A direction of the thrust generated by the first propulsion mechanism and a direction of the thrust generated by the at least one second propulsion mechanism are the same as each other.

Abstract: A vessel includes a first propulsion mechanism, at least one second propulsion mechanism, and a hull. The first propulsion mechanism is arranged to generate thrust by an internal combustion engine. The second propulsion mechanism is arranged to generate thrust by an electric motor. The first propulsion mechanism and the second propulsion mechanism are disposed in the hull. The first propulsion mechanism and the second propulsion mechanism are mutually independent. A direction of the thrust generated by the first propulsion mechanism and a direction of the thrust generated by the at least one second propulsion mechanism are the same as each other.

Abstract: A speed control system for a small planing boat can comprise a speed sensor to detect a vessel speed of a boat body, a speed information storing unit on which data of a previously set maximum speed limit of the boat body is stored, and a speed control device for controlling the cruising speed of the boat body not to exceed the maximum speed limit based on a result of a correlation between the cruising speed and the maximum speed limit. The speed control device can comprise a revolution speed sensor, a revolution speed acquiring unit and a revolution speed control unit. The speed control device can also work in conjunction with an intake air mass amount control device which can include an electronically-controlled throttle valve, an air mass amount acquiring unit and a throttle opening degree control unit.

Abstract: A speed control system for a small planing boat can comprise a speed sensor to detect a vessel speed of a boat body, a speed information storing unit on which data of a previously set maximum speed limit of the boat body is stored, and a speed control device for controlling the cruising speed of the boat body not to exceed the maximum speed limit based on a result of a correlation between the cruising speed and the maximum speed limit. The speed control device can comprise a revolution speed sensor, a revolution speed acquiring unit and a revolution speed control unit. The speed control device can also work in conjunction with an intake air mass amount control device which can include an electronically-controlled throttle valve, an air mass amount acquiring unit and a throttle opening degree control unit.

Abstract: A top side of a deck can have a generally flat shape. A pedestal-like operator's seat base can be disposed slightly rearwardly from a central part of the deck. On an upper part of the operator's seat base, an operator's seat, a passenger's seat and a handlebar can be provided. A cowl can form a front face of the operator's seat base and can have an air inlet for introducing ambient air therethrough into an engine room. The air inlet can be provided with a water separating structure for separating ambient water from the ambient air to prevent any entry of the water into the engine room. A handrail can be provided on an upper part of the operator's seat base. Rails can be provided in a front part of a peripheral edge of the deck. A container including a containing recess and a lid can be provided in a front part of the top side of the deck.

Abstract: A temperature sensor comprises a thermistor element, a metal tube into which the thermistor element is inserted, two electrode wires joined to the thermistor element, two lead wires, which are covered by covering tubes with uncovered portions remaining and joined to the electrode wires, respectively, at the uncovered portions, and a housing having an inner hollow space into which the electrode wires and the lead wires are accommodated together with a resin. The sensor further comprises an insulating case disposed inside the housing and provided with a partition section for separating the joined portions of the electrode wires and the lead wires, the electrode wires and the lead wires from each other, and the inside of the insulating case is filled up with resin in a state that an opened end of the metal tube, the electrode wire and portions of the covered lead wires and uncovered portions thereof are inserted in the insulating case.