Abstract: The present invention relates to a wave energy conversion device (1), for use in relatively shallow water, which has a base portion (2) for anchoring to the bed of a body of water (6) and an upstanding flap portion (8) pivotally connected (12) to the base portion. The flap portion is biased to the vertical and oscillates, backwards and forwards about the vertical in response to wave motion acting on its faces. Power extraction means extract energy from the movement of the flap portion. When the base portion (2) is anchored to the bed of a body of water (6) with the flap portion (8) facing the wave motion, the base portion (2) and the flap portion (8) extend vertically through at least the entire depth of the water, to present a substantially continuous surface to the wave motion throughout the full depth of water from the wave crest to the sea bed. A plurality of devices can be interconnected to form one system. The distance between the plurality of flaps is dependent on the wavelength.

Abstract: The present invention relates to a wave energy conversion device (1), for use in relatively shallow water, which has a base portion (2) for anchoring to the bed of a body of water (6) and an upstanding flap portion (8) pivotally connected (12) to the base portion. The flap portion is biased to the vertical and oscillates, backwards and forwards about the vertical in response to wave motion acting on its faces. Power extraction means extract energy from the movement of the flap portion. When the base portion (2) is anchored to the bed of a body of water (6) with the flap portion (8) facing the wave motion, the base portion (2) and the flap portion (8) extend vertically through at least the entire depth of the water, to present a substantially continuous surface to the wave motion throughout the full depth of water from the wave crest to the sea bed. A plurality of devices can be interconnected to form one system. The distance between the plurality of flaps is dependent on the wavelength.

Abstract: A desalination system comprises a reverse osmosis device, a pump for pressurizing fluid to be desalinated, a supply conduit for supplying the pressurized fluid to the reverse osmosis device, and a wave power system for driving operation of the pump, wherein the wave power system comprises a turbine connectable to a transmission for driving operation of the pump and arranged such that in operation rotation of the turbine provides mechanical energy to the transmission to drive operation of the pump; and a wave energy conversion device connectable to a turbine fluid supply conduit for supplying fluid to the turbine, wherein the wave energy conversion device is arranged to operate in response to wave motion to transfer fluid through the turbine fluid supply conduit to drive rotation of the turbine.

Abstract: A method of installing an underwater foundation, suitable for use in supporting or anchoring wave or tidal energy capture devices is provided. The method comprises providing a foundation unit (1) equipped with a submersible drilling rig (16); placing the foundation unit (1) on the bed (50) of a body of water at a selected location; activating the submersible drilling rig (16) to drill a plurality of pile holes (56) in the bed of the body of water; and securing the foundation unit (1) to the bed of the body of water by means of piles (54) or tendons, inserted in pile holes (56) and secured to the foundation unit (1). A foundation unit (1) and a submersible drilling rig (16) for use in the method are also provided.

Abstract: The present invention relates to a wave energy conversion device (1), for use in relatively shallow water, which has a base portion (2) for anchoring to the bed of a body of water (6) and an upstanding flap portion (8) pivotally connected (12) to the base portion. The flap portion is biased to the vertical and oscillates, backwards and forwards about the vertical in response to wave motion acting on its faces. Power extraction means extract energy from the movement of the flap portion. When the base portion (2) is anchored to the bed of a body of water (6) with the flap portion (8) facing the wave motion, the base portion (2) and the flap portion (8) extend vertically through at least the entire depth of the water, to present a substantially continuous surface to the wave motion throughout the full depth of water from the wave crest to the sea bed. A plurality of devices can be interconnected to form one system. The distance between the plurality of flaps is dependent on the wavelength.

Abstract: The present invention relates to a wave energy conversion device (1), for use in relatively shallow water, which has a base portion (2) for anchoring to the bed of a body of water (6) and an upstanding flap portion (8) pivotally connected (12) to the base portion. The flap portion is biased to the vertical and oscillates, backwards and forwards about the vertical in response to wave motion acting on its faces. Power extraction means extract energy from the movement of the flap portion. When the base portion (2) is anchored to the bed of a body of water (6) with the flap portion (8) facing the wave motion, the base portion (2) and the flap portion (8) extend vertically through at least the entire depth of the water, to present a substantially continuous surface to the wave motion throughout the full depth of water from the wave crest to the sea bed. A plurality of devices can be interconnected to form one system. The distance between the plurality of flaps is dependent on the wavelength.