An Axial Flux Propulsion System for an Electric Boat which includes interconnecting subsystems including a mounting system, a traction system, a transmission system, an electrical power distribution system, a control system, and a fluid management system among other boat systems. The traction system being an axial flux motor/generator.

A heat transfer apparatus including a reservoir, a pump fluidically coupled to the reservoir, a splitter fluidically coupled to the pump and coupled to a plurality of fluid flows. The heat transfer apparatus includes a first temperature sensor disposed between the pump and the splitter, and for each of the plurality of fluid flows: an adjustable valve, a motor fluidically coupled to the adjustable valve, a second temperature sensor integrated into the motor and a third temperature sensor disposed after the motor. The heat transfer apparatus includes a combiner fluidically coupled to each of the fluid flows, a fourth temperature sensor disposed after the combiner, and a heat sink fluidically coupled to the combiner and the reservoir wherein the second temperature sensor is configured to provide a control signal to a control unit to control fluid flow through the adjustable valve.

A propulsion system includes an electric motor assembly having an electric motor, a driveshaft, and a disconnect clutch. The disconnect clutch is structured to couple the driveshaft to an engine output shaft. The propulsion system further includes a fluid system having a cooling and lubrication fluid circuit fluidly connected to a first pump, and a clutch actuation fluid circuit fluidly connected to a second pump. The cooling and lubrication fluid circuit is fluidly connected to the clutch actuation fluid circuit via at least one of respective pump outgoing conduits from the first pump and the second pump or respective pump supply conduits to the first pump and the second pump. Related operating methodology is also disclosed.

A watercraft comprising a display; and a liquid cooling system coupled to the display and configured to cool the display. The display has a brightness of at least 500 nits.

The present invention relates to an apparatus for automatically managing the ballast water of a dual-hulled ship and, more specifically, to an apparatus for automatically managing the ballast water of a ship, the apparatus dividing the structure of an integrated ballast water tank into ballast water tanks of a multi-layered structure, and filling each ballast water tank with seawater, so as to perform the original function thereof of maintaining the water-line by means of the ballast water, and having a structure and a device so as to utilize the seawater, used as cooling water, residential water, water for miscellaneous use, and the like, as the seawater of the ballast water tanks, thereby integrally managing the usage of the seawater of the ship, and continuously and successively changing the seawater of the ballast water tanks while the ship is sailing.

A sea water cooling system including a first fluid cooling loop coupled to a first side of a heat exchanger and to a thermal load, a second fluid cooling loop coupled to a second side of the heat exchanger and including a pump for circulating fluid through the second fluid cooling loop, and a controller operatively connected to the pump, wherein the controller is configured to monitor an actual temperature in the first fluid cooling loop and to adjust a speed of the pump based on the monitored temperature to achieve a predetermined temperature in the first fluid cooling loop. The system may be selectively operable in one of a plurality of operating modes, wherein in a first operating mode the pump operates based entirely on cooling demands of the thermal load, and in a second operating mode the pump operates to maintain a fluid pressure above a predefined pressure.

A watercraft comprising a hull, an electric drive, a battery electrically coupled to the electric drive, an intake aperture formed in the hull, and a pump fluidly coupled to the intake aperture by an intake channel positioned between the intake aperture and the pump. The watercraft further includes an outlet channel fluidly coupled to the pump and the battery, and a discharge aperture formed in the hull and fluidly coupled to the battery by a discharge channel positioned between the discharge aperture and the battery.

A propulsion system for a marine vessel includes a transom bracket being configured to be connected with a transom of the marine vessel, and a drive unit. The drive unit is rotatably connected with the transom bracket via a first pivot joint, wherein a harness is guided from the transom bracket via the first pivot joint to the drive unit.

A sea water cooling system including a first fluid cooling loop coupled to a first side of a heat exchanger and to a thermal load, a second fluid cooling loop coupled to a second side of the heat exchanger and including a pump for circulating fluid through the second fluid cooling loop, and a controller operatively connected to the pump, wherein the controller is configured to monitor an actual temperature in the first fluid cooling loop and to adjust a speed of the pump based on the monitored temperature to achieve a predetermined temperature in the first fluid cooling loop. The system may be selectively operable in one of a plurality of operating modes, wherein in a first operating mode the pump operates based entirely on cooling demands of the thermal load, and in a second operating mode the pump operates to maintain a fluid pressure above a predefined pressure.

An assembly comprises a wet compartment (100) having at least one inlet opening for allowing water to enter the wet compartment (100), a functional unit (2) located in the wet compartment (100), a dry area (200) which cannot be reached by water and which is outside of the wet compartment (100), a barrier (110) situated between the dry area (200) and the wet compartment (100), and at least one energy source (20) which is arranged and configured to emit energy for preventing biofouling of at least an exterior surface (17) of the functional unit (2), wherein the energy source (20) is arranged in the dry area (200), a path (112) being present between the dry area (200) and the wet compartment (100) for allowing energy emitted by the energy source (20) during operation thereof to reach the wet compartment (100), through the barrier (110).