An engine ECU provided in a boat propulsion system is connected to a remote control ECU provided in a remote control device, the remote control ECU is connected to a gauge ECU provided in an information display device, and control is performed so as to start communication between the remote control ECU and the gauge ECU after a power supply is turned on and after authentication of the engine ECU and the remote control ECU is completed. Accurate information on the boat propulsion system can be tr...

A boat capable of assigning device instance numbers in accordance with the placement order of boat propulsion units, irrespective of the activation order of the boat propulsion units, comprises a plurality of control units for controlling a plurality of boat propulsion units. A plurality of gauge sections for displaying operation information of the respective boat propulsion units are connected to each other and to the plurality of control units via a communication network. The respective contro...

A boat can include batteries, a generator, a remote control unit provided in a hull, and an outboard motor controlled through the remote control unit so as to generate thrust. The batteries and the generator can be connected to the remote control unit and the outboard motor via power supply cables. The remote control unit and the outboard motor can be connected via drive by wire controller area network ("DBW CAN") cables . At least two systems of power supply cables and at least two systems of D...

A boat includes a body having one or two paddling positions. The body is sufficiently narrow at the paddling positions to provide a comfortable paddling width. A bow extends forwardly and converges to become progressively narrower from the forward paddling position. A stern extends rearwardly and diverges to become progressively wider from the rearward paddling position. The stern has two hulls positioned rearward of the at least one paddling position and separated by a connecting surface. The c...

A boat comprises a central hull member (10), such member having no flat surfaces below the waterline such as could support the boat in a planing mode, the ratio of the length of such member to its beam being no less than 5 to 1, and a respective auxiliary member (12, 14) connected to each side of the central hull member and extending therealong, the auxiliary members extending to a lesser depth than the central hull member, the ratio of the beam of the boat to the beam of the central hull member...

A remote control operation unit can have a remote control shift lever through which a boat operator can remotely control a forward drive mode, a neutral mode, and a reverse drive mode. A boat propulsion unit can have a shift switching device for shifting and a shift actuator for operating the shift switching device. A controller can be used to control the operation of the shift actuator in response to the operation amount of the remote control shift lever. The controller can also be configured t...

A boat which may be operated by one person and which comprises a power source, a seat hingedly secured to the boat, a foot control steering apparatus, and cable connected from the foot control steering apparatus through the seat to the power source.

A water borne boat is propelled by manually energized water pumps that propel the boat by induction and reaction forces, the water pumps being manually energized by a person standing on drive members of the pumps, which are operated in the manner of a treadmill.

A boat is arranged to carry temporarily a vehicle (2), a driven wheel (7) of which is arranged to drive a propeller shaft (15) of the boat via contact rollers (9), and a belt drive (11), to propel the boat from the power of the vehicle engine. The boat may also be steered by means of a rudder which is connected to a movable cradle which engages and follows movement of the steerable front wheels of the vehicle.

A boat which greatly reduces ventilation under a boat and cavitation in an outboard motor's propeller is disclosed. Preferably, a skeg and hulls are arranged to produce a zone behind the boat which is substantially free of froth and in which a propeller may operate efficiently. Preferably, the skeg is trapezoidal in cross-section with substantially planar surfaces. It runs forward from its broad end to its source, which preferably lies in a section about 60-75% of the boat's length forward from ...