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.

A vessel propulsion apparatus includes an engine that rotates a crankshaft in a forward rotation direction, a rotation speed detector that detects a rotation speed of the crankshaft, a propeller shaft coupled to a propeller, a shift switch that switches between a shift-in state and a neutral state, a shift state detector, an intake passage, a throttle valve, an intake pressure sensor, and a controller. The controller determines that the crankshaft is reversely rotating by an external force input from the propeller shaft when a predetermined reverse rotation recording condition is satisfied, and stores reverse rotation information. The reverse rotation recording condition includes a condition that an intake pressure after the shift switch switches from a neutral state to a shift-in state while the crankshaft rotates in the forward rotation direction is larger than a value equal to or higher than atmospheric pressure.

A vessel propulsion apparatus includes an engine that rotates a crankshaft in a forward rotation direction, a rotation speed detector that detects a rotation speed of the crankshaft, a propeller shaft coupled to a propeller, a shift switch that switches between a shift-in state and a neutral state, a shift state detector, an intake passage, a throttle valve, an intake pressure sensor, and a controller. The controller determines that the crankshaft is reversely rotating by an external force input from the propeller shaft when a predetermined reverse rotation recording condition is satisfied, and stores reverse rotation information. The reverse rotation recording condition includes a condition that an intake pressure after the shift switch switches from a neutral state to a shift-in state while the crankshaft rotates in the forward rotation direction is larger than a value equal to or higher than atmospheric pressure.

A drivetrain for a marine propulsion device includes an engine driving a crankshaft in a first direction, and a driveshaft connected in torque-transmitting relationship with the crankshaft and supported for rotation about a driveshaft axis. The drivetrain further includes a propeller shaft rotatable about a propeller shaft axis. A gearset and a selector clutch are configured to couple the propeller shaft and the driveshaft to each other in torque-transmitting relationship. A one-way clutch is disposed along the drivetrain upstream of the gearset. The one-way clutch prevents rotation of the crankshaft in a second, opposite direction so as to prevent ingestion of water by the engine via an engine exhaust system.

A parallel or redundant hybrid drive of a marine drivetrain of a propulsion unit includes an input shaft, which is configured to be driven by a primary drive source; a clutch unit attached to the input shaft with which rotation of the input shaft can be either connected, reversed, or disconnected; a countershaft transverse to the input shaft and driven by the input shaft via a gear; and a secondary drive source arranged via an interconnected clutch at an end of the countershaft, so that upon driving of the input shaft by the primary drive source, the secondary drive source drives the countershaft either on its own or in cooperation with the primary drive source.

An electrically actuated propeller pitch control system includes a propeller hub assembly, a propeller assembly, and a crosshead drive system. The propeller hub assembly rotates about the central axis during operation of watercraft. The propeller assembly is configured to selectively rotate a propeller blade. The crosshead drive system includes an electric motor, a transmission, and a lead screw that rotates about the central axis.

A propulsion control arrangement operable to control a speed and possible direction of a marine vessel. A marine propulsion control system controlling a carried by a hull of a marine vessel, wherein the marine propulsion control system is adapted to receive an input command from the propulsion control arrangement.

A propulsion control arrangement operable to control a speed and possible direction of a marine vessel. A marine propulsion control system controlling a carried by a hull of a marine vessel, wherein the marine propulsion control system is adapted to receive an input command from the propulsion control arrangement.

A motorcycle wheel attachment or replacement of the existing drive pulley used on the rear rubber cushioned wheel of motorcycles and trikes. The attachment or replacement contains an apparatus that allows the operator of the motorcycle or trike to ride the motorcycle or trike in forward or reverse drive using a control linkage or electrical switch.

An electrically actuated propeller pitch control system includes a propeller hub assembly, a propeller assembly, and a crosshead drive system. The propeller hub assembly rotates about the central axis during operation of watercraft. The propeller assembly is configured to selectively rotate a propeller blade. The crosshead drive system includes an electric motor, a transmission, and a lead screw that rotates about the central axis.