A computing apparatus that is integrated within a flotation module, the system obtaining the energy required to power its computing operations from waves that travel across the surface of a body of water on which the flotation module sets. Additionally, the self-powered computing apparatus employs novel designs to utilize its close proximity to the body of water and/or to strong ocean winds to significantly lower the cost and complexity of cooling their computing circuits.

A turbine system that harnesses energy from natural atmospheric wind and water currents for power generation and storage in a power storage mode, and in a reverse switched operation, sources current to the turbine system from storage power to function in a propulsion mode to propel an associated structure (e.g., boat, aircraft).

A vessel (100) having a stabilization arrangement, the stabilization arrangement having a first tank (10) and a second tank (11), each of the first and second tanks (10, 11) configured to hold a water column, a channel (12, 22) connecting the first tank (10) to the second tank (11), and a turbine unit (13, 23, 33, 34) arranged in the channel (12, 22).

A computing apparatus that is integrated within a flotation module, the system obtaining the energy required to power its computing operations from waves that travel across the surface of a body of water on which the flotation module sets. Additionally, the self-powered computing apparatus employs novel designs to utilize its close proximity to the body of water and/or to strong ocean winds to significantly lower the cost and complexity of cooling their computing circuits.

A hybrid power system has an internal combustion engine, a gear box having an input connectable to the engine and an output shaft to drive a vehicle, a first power drive and take off releasably connectable to the gear box input, a second power drive and take off releasably connectable to the gear box output, at least one motor/generator connected the first and/or second power drive and take off, a connecting clutch releasably connecting the first and second power drive and take off, and a battery to power or be charged by the or each motor generator.

The invention relates to a sail having a variable profile. The sail can vary between a folded non-operative position and an unfolded operative position, wherein they determine the profile of the sail (2) and therefore the aerodynamic surface for contacting with the wind, characterised in that the sail comprises at least one sail element (24) which is inflatable and stiffenable, and which can be actuated by inflation (30) and stiffening means (29), between a folded position corresponding to said folded non-operative position and said unfolded operative position, in which the sail (2) is inflated. The profile of the sail is divided into sections (21, 22) on both sides of a shaft (20), and comprises a support structure (23) on which said inflatable sail elements (24) are disposed, said inflatable sail elements being formed by inflatable pockets (24) which can be actuated by said inflation (30) and stiffening means (29).

[Problem to be solved] An object of the present invention is to provide a zero emission power generation sailing ship, wherein generated electric power is consumed for electric demand in the ship or consumed for electric demand in the ship and for driving the ship in response to wind condition, thereby realizing zero emission navigation.

[Means for solving the problem] A zero emission power generation sailing ship comprises a sail provided on a deck, a water turbine-propeller, a power generator-motor which is driven by the water turbine-propeller operating as a water turbine and drives the water turbine-propeller operating as a propeller, and an energy storage device for directly storing electric energy generated by the power generator-motor or converting the electric energy into energy of a substance and storing the substance, wherein the water turbine-propeller operates as a water turbine and the power generator-motor operates as a power generator so as to generate electric power and a part of the generated electric power is consumed for electric demand in the ship and residual part of the generated electric power is stored in the energy storage device when the wind is strong, while the power generator-motor operates as a motor and the water turbine-propeller operates as a propeller and a part of the electric power drawn from the energy storage device is consumed for electric demand in the ship and residual part of the electric power is consumed for driving the power generator-motor operating as a motor when the wind is light, and further comprises a course selecting device provided with a computer program for selecting course based on ocean wind forecasting data so as to prevent exhaustion of the electric power stored in the energy storage device.

According to an example aspect of the present invention, there is provided a marine propulsion system (1) comprising a first portion (4) and a second portion (5) of a set of movable foils, a movement mechanism (2) coupled to the first portion (4) and the second portion (5) of the set of movable foils and configured to simultaneously control a motion of the first portion (4) and the second portion (5) of the set of foils along a closed first trajectory (6) comprising a first direction (17) and a second direction (18) which is different than the first direction (17), and a pitch mechanism (3) coupled to the first portion (4) and the second portion (5) of the set of movable foils and configured to control a pitch angle () of the first portion (4) and the second portion (5) of the set of movable foils, and wherein the pitch angle () of at least a part of the second portion (5) of the set of foils is dependent on an incoming fluid flow (v.sub.x), the motion of the second portion (5) of the set of foils, and a flow (v.sub.ind) induced by at least a part of the first portion (4) of the set of foils.

An electric underwater jet motor designed for vehicles traveling above or below the sea. The electric underwater jet motor includes a plurality of stators for marine crafts; at least one radial stator, at least one rotor, at least two impeller blades, a magnetic bearing; at least one permanent magnet bar; at least one axial stator, hydrodynamic bearing components, a motor housing and an engine fastener; a hydrodynamic jet motor housing; and a control unit including a microprocessor, a software, magnetic bearing distance sensors, counter and speed measurement sensors, gyroscopic balance sensors to provide comfortable travel by collected data to reduce an effect of sea currents and wave movements which are the consequences of seasickness on the passengers at sea, heat and humidity sensors, pressure measurement sensors, voltage and ampere measurement sensors, a motor drive circuitry, software algorithms, an energy management system, a control panel, batteries and battery charging components.

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.