A vessel (2) which floats on water (4) and which generates electricity, which vessel (2) comprises: (i) a hull (6); (ii) at least one water inlet (8) at a front part of the vessel (2); (iii) at least one water outlet (10) at another part of the vessel (2); and (iv) apparatus (12) for generating electricity comprising at least one stator (16) and at least one rotor (18),
and the vessel (2) being such that: (v) water (4) passing from the water inlet (8) to the water outlet (10) causes the rotor to rotate and thereby the apparatus (12) to generate the electricity.

An apparatus and method for control of at least one of a plurality of semiautonomous marine vessels are provided. The system includes a control station with a communications system for network communication with marine vessels, and provides diagnostics and control for control and monitoring of the marine vessels, according to a mission plan.

A power generation sailing ship has a sail provided on a deck, a water turbine connected to a front end of a shaft passing through a bow part outer hull and extending forward, a power generator disposed in a front body of the sailing ship and connected to a rear end of the shaft, and an energy storage device for directly storing electric energy generated by the power generator or converting the electric energy into energy of a substance and storing the substance.

An ocean-powered hydrogen generator system includes: a transportable ocean-going vessel, the vessel is movable to a location with ocean kinetic energy; a generator for converting ocean kinetic energy into electrical energy, the generator is movable on the vessel between a transport position and a generating position; a dissociator for using the electrical energy to dissociate ocean water into hydrogen and oxygen, the dissociator is located on the vessel and operatively connected to the generator; and a container for storing the generated hydrogen and oxygen on the vessel, the container is in fluid communication with the dissociator.

Disclosed is a marine fuel cell-based integrated heat, electricity, and cooling supply system comprising a power supply system and a waste heat recovery system; the power supply system comprises wind turbine generator sets, solar generator sets, and a fuel cell power module; the waste heat recovery system encompasses a turbine power generation module and a lithium bromide refrigeration module; the fuel cell power module is connected to both the turbine power generation module and the lithium bromide refrigeration module; the turbine power generation module is used to generate electricity using waste heat. This approach fully exploits the waste heat from the exhaust gas generated by the fuel cell power module, resulting in a high overall energy utilization rate. The self-consumption electricity and pure hydrogen fuel for the integrated energy supply system can be obtained from solar and wind energy, ensuring low carbon emissions for the entire system.

A method for harnessing wave energy includes providing a vehicle to a body of water, the vehicle. The method includes submerging the vehicle to a depth in the body of water. The method includes operating the motor-generator of the vehicle in the first quadrant of the motor-generator. The method includes detecting a phase of a wave in the body of water based information from the processor of the detected phase. The method includes orienting the vehicle to lag the phase of the wave based on the detected phase of the wave. The method includes synchronizing an inertial acceleration of the vehicle to movement of the wave. The method includes switching the motor-generator to the second quadrant for generation mode to convert energy from the movement of the wave to electrical energy. The method includes storing the energy from the wave in the rechargeable battery source.

A movable maritime vessel for generating, storing and transporting energy, the vessel comprising a hull, at least one sail configured to capture wind energy to move the vessel, and an energy generation system comprising a hydro generator, wherein the hydro generator is configured to generate energy from the movement of fluid, for example water, for example sea water, through the hydro generator.

A marine vessel (10) includes a hull (11), an electric propulsion part (15) configured to propel the hull (11), an anchor part (20) that is connected to a chain cable (21) pulled out from the hull (11) and is submerged in water, a power generating part (63) submerged in water together with the anchor part (20), and a battery case (30) configured to accommodate a detachable portable battery (35) that is an electric power source of the electric propulsion part (15), wherein the battery case (30) is integrated with the anchor part (20) and connected to the power generating part (63).

Systems and methods for utilizing nuclear-based marine craft to generate electricity for external or grid usage are disclosed. In accordance with some embodiments, the system may include a nuclear-based marine craft having a propeller shaft and an electrical generator coupled external to the marine craft and configured to transmit generated electricity. In accordance with some other embodiments, the system may include a nuclear-based marine craft having a nuclear reactor and a turbine, a dock or barge having its own turbine and electrical generator, a steam outlet pipe connecting the nuclear reactor to the dock or barge turbine, and a steam inlet pipe connecting the dock or barge turbine back to the nuclear reactor, whereby heated steam from the nuclear reactor spins the dock or barge turbine, which then powers the electrical generator on the dock or barge to generates electricity.

A mobile underwater power generation system for an ocean-going vessel utilizing gravitational potential energy, including a hull of the ocean-going vessel, a cabin water tank, an open annular pipe structure, a ducted dual-magnetic circuit coreless tidal generator, a ducted water transfer pump, a fuel generator set, a control cabinet, a first electric motor, a second electric motor, a first propeller and a second propeller. The ducted water transfer pump includes a main shaft, a first fixing ring, an annular housing, a first bearing component, an annular stator winding structure, a rotor permanent magnet, a second bearing component, a second fixing ring, first fixing components, a flange bolt, a first rotor graphite bearing, an annular mounting sleeve, a water guide blade, a lead wire of the annular stator winding structure, a second rotor graphite bearing and second fixing components.