An outboard motor unit includes a first outboard motor including a supercharger that is located inside a first cowling and supplies compressed air to a first engine, a second outboard motor including a second cowling and a second engine housed in the second cowling, and an air passage through which the air compressed by the supercharger of the first outboard motor is supplied to the second engine of the second outboard motor.

An outboard motor includes a shift rod including a first rod, a second rod, and a joint. The first rod extends in a vertical direction. The second rod extends in the vertical direction and is located below the first rod. The second rod is disposed eccentrically with respect to the first rod. When viewed in a plan view, the second rod overlaps with at least a portion of the first rod or is in contact with the first rod. The joint connects the first rod to the second rod.

A method of automatically moving, by an automatic location placement system, a marine vessel includes receiving, by a central processing unit, from a vision ranging photography system, at least one optical feed including data providing a mapping of an environment surrounding a marine vessel. The method includes displaying, by the central processing unit, on a touch screen monitor, the mapping of the environment. The method includes receiving, by the central processing unit, from the touch screen monitor, target location data. The method includes directing, by the central processing unit, at least one element of a propulsion system of the marine vessel, to move the marine vessel to the targeted location, using the mapping.

An outboard motor having an internal combustion engine that causes rotation of a driveshaft, a planetary transmission that operatively connects the driveshaft to a transmission output shaft, a band brake configured to shift the planetary transmission amongst a forward gear, neutral gear and reverse gear, a hydraulic actuator is configured to actuate the band brake, and a cooling water circuit that extends adjacent to the hydraulic actuator so that the hydraulic actuator exchanges heat with cooling water in the cooling water circuit.

The invention relates to a swimming and diving aid with a vehicle hull on which a user lies or stands, with a flow channel which is arranged in the vehicle hull and which accommodates a propeller driven by an electric motor with radially outwardly directed propeller blades mounted on a base part of the propeller, wherein the electric motor has a rigidly arranged motor stator and a rotating rotor, which is spatially assigned to the motor stator. Provision is made that the rotor of the electric motor is coupled directly or indirectly to at least one outer end of at least one propeller blade, and that the motor stator is arranged circumferentially around the rotor at least in sections. The motor arrangement permits a dynamic drive of the swimming and diving aid.

The invention relates to a swimming and diving aid with a vehicle hull on which a user lies or stands, with a flow channel which is arranged in the vehicle hull and which accommodates a propeller driven by an electric motor with radially outwardly directed propeller blades mounted on a base part of the propeller, wherein the electric motor has a rigidly arranged motor stator and a rotating rotor, which is spatially assigned to the motor stator. Provision is made that the rotor of the electric motor is coupled directly or indirectly to at least one outer end of at least one propeller blade, and that the motor stator is arranged circumferentially around the rotor at least in sections. The motor arrangement permits a dynamic drive of the swimming and diving aid.

Systems and methods are for monitoring underwater impacts to marine propulsion devices. The systems can comprise a marine propulsion device that is trimmable up and down about a trim axis; a trim sensor that senses at least one of a current trim position of the marine propulsion device relative to the trim axis and a rate at which the marine propulsion device is trimmed relative to the trim axis; and a controller that is configured to compare the rate at which the marine propulsion device is trimmed relative to the trim axis to a stored threshold value to thereby determine whether an underwater impact to the marine propulsion device has occurred.

Embodiments of the present invention are generally related to compensation of magnetic data, and, in particular, to a system and method for compensation of magnetic data as collected during autonomous underwater vehicle mapping surveys.

Embodiments of the present invention are generally related to compensation of magnetic data, and, in particular, to a system and method for compensation of magnetic data as collected during autonomous underwater vehicle mapping surveys.

The invention relates to a swimming and diving aid with a vehicle hull on which a user lies or stands, with a flow channel which is arranged in the vehicle hull and which accommodates a propeller driven by an electric motor with radially outwardly directed propeller blades mounted on a base part of the propeller, wherein the electric motor has a rigidly arranged motor stator and a rotating rotor, which is spatially assigned to the motor stator. Provision is made that the rotor of the electric motor is coupled directly or indirectly to at least one outer end of at least one propeller blade, and that the motor stator is arranged circumferentially around the rotor at least in sections. The motor arrangement permits a dynamic drive of the swimming and diving aid.