Abstract: This invention relates to apparatus for converting into useful energy movements imparted thereto by movement of water, preferably sea waves and/or sea currents, the apparatus comprising two or more interconnected members of which at least one is buoyant and which in use of the apparatus are movable relative to each other due to vertical motions of the water, at least one of said members being provided with or connected to means which in use of the apparatus is responsive to horizontal motions of the water, and means for converting the relative movements of said interconnected members and operation of the means responsive to horizontal motions of the water into useful energy, such as electricity.

Abstract: This invention relates to apparatus for extracting energy from movement of water, particularly sea waves, the apparatus comprising a plurality of buoyant members which are interconnected one with another so as to be movable relative to one another, each buoyant member being provided with a plate or plate-like member which is supported from the buoyant member and positioned so that in use of the apparatus it is submerged below the level of the water, and means are provided for converting the relative movement of the buoyant members into useful energy, such as electricity.