An integrated electric pontoon driver system. The drive system may include an electric propulsion system integrated within a pontoon. The electric propulsion system may include an energy storage module configured for storing and supplying electrical power, an onboard charging module configured for managing charging and discharging of the electrical power to and from the energy storage module, and an electric drive module configured for converting the electrical power discharged from the energy storage module to mechanical power operable for propelling the marine vessel through a body of water.

An electrically driven propulsion system for a watercraft comprises an electric motor, a pulse inverter, a thrust bearing, and a transmission is presented. The pulse inverter can be electrically coupled to the electric motor and adapted to provide an electrical supply power of at least 50 kW to the electric motor. The electrically driven propulsion system further comprises a common waterproof housing. An external section of the transmission can be arranged outside of the common waterproof housing. The transmission can be adapted to rotationally couple the external section of the transmission to the electric motor. The thrust bearing can be mechanically coupled to the rotary shaft of said transmission and to the common waterproof housing. The thrust bearing can be adapted to transfer a force applied to the transmission along an axial direction of said rotary shaft of the transmission to the common waterproof housing.

An electric marine propulsion system configured to propel a marine vessel includes a power storage system comprising a plurality of batteries and at least one electric motor powered by the power storage system and configured to rotate a propulsor to propel the marine vessel. A control system is configured to identify a charge level for each of the plurality of batteries and determine which of the plurality of batteries are active batteries based at least in part on the charge level on each of the plurality of batteries. A minimum power limit is then identified for the active batteries and a system power limit is determined based on the minimum power limit and the number of active batteries. The at least one electric motor is then controlled based on the system power limit such that the system power limit is not exceeded.

An unmanned undersea vehicle including a magnetic coupler drive. The magnetic coupler drive is incorporated into a hull section, such as a tail section of the unmanned undersea vehicle. The magnetic coupler drive includes a motor shaft magnet, a titanium housing disposed about the motor shaft magnet, and a propeller shaft magnet magnetically coupled to the motor shaft magnet, but physically separated from the propeller shaft magnet by the titanium housing.

An unmanned undersea vehicle including a magnetic coupler drive. The magnetic coupler drive is incorporated into a hull section, such as a tail section of the unmanned undersea vehicle. The magnetic coupler drive includes a motor shaft magnet, a titanium housing disposed about the motor shaft magnet, and a propeller shaft magnet magnetically coupled to the motor shaft magnet, but physically separated from the propeller shaft magnet by the titanium housing.

An electric marine propulsion system including steering and vertical position control is provided. The electric drive assembly includes a main drive motor transmitting torque through a shaft to a propeller. The electric drive assembly integrates a dual rudder system positioned ahead of the main drive propeller. The rudder assemblies integrate electric stern thrusters for low-speed maneuvering. The steering and vertical position adjustments for the drive assembly are electrically operated. The electric drive assembly is installed entirely outside the hull of the watercraft.

A power supply system for a water-bound device and to an operating method, the water-bound device having an electric shaft and in particular a first zone and a second zone, the system includes: a first DC voltage bus for a first DC voltage and a second DC voltage bus for a second DC voltage; a first energy source and a second energy source, the first energy source being provided in the first zone for supplying at least one DC voltage bus of the at least two DC voltage buses, and the second energy source being provided in the second zone for supplying at least one DC voltage bus of the at least two DC voltage buses, the energy supply system being structured at least partially in a zone-dependent manner.

A power supply system for a water-bound device and to an operating method, the water-bound device having an electric shaft and in particular a first zone and a second zone, the system includes: a first DC voltage bus for a first DC voltage and a second DC voltage bus for a second DC voltage; a first energy source and a second energy source, the first energy source being provided in the first zone for supplying at least one DC voltage bus of the at least two DC voltage buses, and the second energy source being provided in the second zone for supplying at least one DC voltage bus of the at least two DC voltage buses, the energy supply system being structured at least partially in a zone-dependent manner.

A personal watercraft comprises a deck having coupled thereto a hull defining a bottom wall, a rear wall and a water intake extending from the bottom wall to the rear wall, and a jet propulsion system. The jet propulsion system comprises a housing coupled to the rear wall and defining an inlet to receive water from the water intake, a venturi, and an outlet to expel the water, and comprises a rim-driven motor disposed within the housing between the inlet and the venturi. The rim-driven motor defines a center axis and comprises a stator coupled to the housing, a rotor disposed radially inwardly of the stator relative to the center axis, and impeller blades coupled to the rotor and projecting towards the center axis, the rotor and the impeller blades rotatable about the center axis to draw the water via the inlet and expel the water via the outlet.

A personal watercraft comprises a deck having coupled thereto a hull defining a bottom wall, a rear wall and a water intake extending from the bottom wall to the rear wall, and a jet propulsion system. The jet propulsion system comprises a housing coupled to the rear wall and defining an inlet to receive water from the water intake, a venturi, and an outlet to expel the water, and comprises a rim-driven motor disposed within the housing between the inlet and the venturi. The rim-driven motor defines a center axis and comprises a stator coupled to the housing, a rotor disposed radially inwardly of the stator relative to the center axis, and impeller blades coupled to the rotor and projecting towards the center axis, the rotor and the impeller blades rotatable about the center axis to draw the water via the inlet and expel the water via the outlet.