According to an example aspect of the present invention, there is provided a system for harnessing energy from moving ice, the system comprising a first part configured to move into a first direction under pressure caused by moving ice at least until an ice compression strength is reached and to subsequently move into a second direction, and a second part configured to transform kinetic energy of a cyclic motion of the first part into electric energy.

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.

A system that maintains the relative and/or absolute geographical positions of two or more buoyant devices floating in a body of water. A plurality of formation restoring tethers are disclosed which permit the unrestricted vertical movement of networked buoyant devices, while resisting increases in their lateral separations by providing restoring forces to oppose such separations. Tensioning mechanisms incorporated into the tethers generate the resistance to the lateral separations of two or more entities by transforming such separations into an increase in the potential energy stored within such tensioning mechanisms, the potential energy of which is released in the process of restoring the original separations and/or positions of the displaced buoyant devices.

A power generation method and device utilizes fluid currents to generate power by rotating a rotation element which in turn rotates a cable which turns components within a power generator to generate the power. The rotation element is positioned within the fluid and is able to move to different depths as desired. The power generator is positioned inside or outside of the fluid. The rotation element is able to be a helix, helix-propeller, propeller or any other practical design. The rotation element is also able to implement additional components.

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 floating structure is described. The floating structure includes a floating platform disposed at a water surface, a mooring system and a damping system. The mooring system is configured for mooring one side of the floating platform to a sea floor, thereby to permit rotation of the floating structure and to provide a desired orientation down-wind with respect to an anchor point. The damping system is arranged at one side of the floating platform and is configured for absorbing wave energy and stresses imparted by the motion of waves in order to stabilize a horizontal position of the floating structure down-wind during a storm against the waves.

The invention relates to a mooring arrangement (2, 2) for a floating device (1, 2) comprising a band (5) and a drum (3) adapted to pay out and pull in the band (5). The invention being distinctive in that the mooring arrangement (2, 2 further comprising a band guide (14, 15,22), said band (5) is extending from the drum (3) via the band guide (14, 15, 22) and is adapted to be coupled to an anchoring arrangement (13), said band said band guide (4, 15, 22) being configured to tilt about an articulation axis (A, B) being parallel with a longitudinal axis of the part of the band (5a) situated between the drum (3) and the band guide (14, 15, 22) in order to position the band (5) to compensate for movement in the floating device (1,12, 12) and thus reduce the wear in the band (5).

A buoyant hydrodynamic pump is disclosed that can float on a surface of a body of water over which waves tend to pass. The pump incorporates an open-bottomed tube with a constriction. The tube partially encloses a substantial volume of water with which the tube's constriction interacts, creating and/or amplifying oscillations therein in response to wave action. Wave-driven oscillations result in periodic upward ejections of portions of the water inside the tube that can be collected in a reservoir that is at least partially positioned above the mean water level of the body of water, or pressurized by compressed air or gas, or both. Water within such a reservoir may return to the body of water via a turbine, thereby generating electrical power (making the device a wave engine), or else the device's pumping action can be used for other purposes such as water circulation, propulsion, or cloud seeding.

A system, for storing and generating electrical energy in an aquatic environment, comprising: a plurality of weights (135) attached to an underwater PAP platform (131) positioned at a sufficient depth to avoid surface currents and the effects of bad weather. a generator lift (100), arranged to cooperate with the weights (135) and, in generation mode, to allow said weights to descend to the bottom zone (126) and, in drive mode, to raise them back up towards the surface (125); a main underwater platform which is positioned at a sufficient depth to avoid surface currents and the effects of bad weather (101) and is capable of supporting the upper portion of the generator lift (100) below the surface; a reversible motor (102), cooperating with the generator lift (100) and allowing, in generation mode, the production of electrical energy due to the action of the weights (135) as they descend, and, in drive mode, actuation of the generator lift (100) to raise the weights (135) back up.

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.