A marine propulsion control system for use with a marine vessel includes an engine in electronic communication an engine controller, and a transmission having a gearbox and an oil pressure sensor in electronic communication with the engine controller and configured to measure a transmission oil pressure. The gearbox includes a feedback sensor configured to transmit a gear state. A propulsion device is rotatably connected to the gearbox, and a shaft fixedly attached to the propulsion device and rotatably coupled to the gearbox. The shaft includes a shaft rotation sensor configured to measure a rotational direction of the shaft. A propulsion control processor is in electronic communication with the engine controller, the shaft rotation sensor and the gearbox, and is configured to determine a current gear of the marine vessel based on the rotational direction of the shaft and one or more of the gear state and the transmission oil pressure.

A thruster (1) for propelling a watercraft comprises at least one propeller (11, 12) on a rotatable propeller shaft (13, 14) and a motor (20) for driving the propeller shaft (13, 14) through a drive arrangement, particularly a drive arrangement comprising a rotatable drive shaft (31) and a coupling arrangement (32) arranged between the drive shaft (31) and an output shaft (22) of the motor (20) for coupling the drive shaft (31) to the output shaft (22) of the motor (20). The motor (20) is a permanent magnet motor, the stator body (21) of the motor (20) being provided with a recess (23) surrounding at least a part of the output shaft (22) of the motor (20), and the coupling arrangement (32) being at least partially located inside the recess (23) so that a 10 configuration having minimal constructional height is obtained.

A thruster (1) for propelling a watercraft comprises at least one propeller (11, 12) on a rotatable propeller shaft (13, 14) and a motor (20) for driving the propeller shaft (13, 14) through a drive arrangement, particularly a drive arrangement comprising a rotatable drive shaft (31) and a coupling arrangement (32) arranged between the drive shaft (31) and an output shaft (22) of the motor (20) for coupling the drive shaft (31) to the output shaft (22) of the motor (20). The motor (20) is a permanent magnet motor, the stator body (21) of the motor (20) being provided with a recess (23) surrounding at least a part of the output shaft (22) of the motor (20), and the coupling arrangement (32) being at least partially located inside the recess (23) so that a 10 configuration having minimal constructional height is obtained.

A device for coupling a propulsor to a marine vessel. The device includes a mounting bracket configured for attachment to the marine vessel. A support frame has a carriage and is configured for the propulsor to be coupled thereto, where the carriage is configured to slidably engage with the mounting bracket into a fixed position. A member is manually engageable to prevent the carriage from sliding out of the fixed position. The propulsor is coupled to the marine vessel by sliding the carriage into the fixed position and engaging the member, where the propulsor is operable to propel the marine vessel in water when the carriage is in the fixed position, and where the propulsor is configured for decoupling from the marine vessel by disengaging the member and sliding the carriage out of engagement with the mounting bracket.

A device for coupling a propulsor to a marine vessel. The device includes a mounting bracket configured for attachment to the marine vessel. A support frame has a carriage and is configured for the propulsor to be coupled thereto, where the carriage is configured to slidably engage with the mounting bracket into a fixed position. A member is manually engageable to prevent the carriage from sliding out of the fixed position. The propulsor is coupled to the marine vessel by sliding the carriage into the fixed position and engaging the member, where the propulsor is operable to propel the marine vessel in water when the carriage is in the fixed position, and where the propulsor is configured for decoupling from the marine vessel by disengaging the member and sliding the carriage out of engagement with the mounting bracket.

An outboard motor having an internal combustion engine that rotates a driveshaft disposed in a driveshaft housing, a transmission that is operatively connected to the driveshaft and is disposed in a transmission housing located below the driveshaft housing, a set of angle gears that operatively connect the transmission to a propulsor for imparting a propulsive force in a body of water, wherein the set of angle gears are located in a lower gearcase located below the transmission housing, and a lubrication system that circulates lubricant to and from the transmission.

An outboard motor having an internal combustion engine that rotates a driveshaft disposed in a driveshaft housing, a transmission that is operatively connected to the driveshaft and is disposed in a transmission housing located below the driveshaft housing, a set of angle gears that operatively connect the transmission to a propulsor for imparting a propulsive force in a body of water, wherein the set of angle gears are located in a lower gearcase located below the transmission housing, and a lubrication system that circulates lubricant to and from the transmission.

A human powered watercraft or land vehicle is described herein. A watercraft or land vehicle may have two pedals that reciprocated are in a linear or slightly curved trajectory but not a circular motion. As the two pedals are reciprocated, an output shaft is rotated in either a clockwise or counterclockwise direction when the left pedal is pushed forward or when the right pedal is pushed forward. The output shaft may be connected to a propeller of a watercraft or a land vehicle so as to propel the watercraft or land vehicle forward. The output shaft may receive rotational input through two gears mounted to the output shaft with one-way bearings that enable the output shaft to rotate in the same direction regardless of whether the left pedal or the right pedal is being pushed forward.

A human powered watercraft or land vehicle is described herein. A watercraft or land vehicle may have two pedals that reciprocated are in a linear or slightly curved trajectory but not a circular motion. As the two pedals are reciprocated, an output shaft is rotated in either a clockwise or counterclockwise direction when the left pedal is pushed forward or when the right pedal is pushed forward. The output shaft may be connected to a propeller of a watercraft or a land vehicle so as to propel the watercraft or land vehicle forward. The output shaft may receive rotational input through two gears mounted to the output shaft with one-way bearings that enable the output shaft to rotate in the same direction regardless of whether the left pedal or the right pedal is being pushed forward.

A propulsion unit for a marine vessel is adapted to receive power from at least one power supply unit. The propulsion unit includes a stationary part adapted to be mounted to a hull of the marine vessel, and a movable part comprising one or more thrust generating devices adapted to transform the received power into a thrust by acting on water carrying the marine vessel. The propulsion unit is adapted to receive exhaust gases from at least two internal combustion engines, wherein the movable part is adapted to release the exhaust gases into the water.