The OER is another hybrid concept harnessing tidal stream with increased velocity from a venturi system, wave and wind power. This system is floating and anchored to the sea bed, being brought back to dock for servicing or repair.

Below is an artist impression of a prototype.

A key element of the Ocean Energy Rig is the Wave Pump;

The FreeFlow 69 Wave Pump is designed to be as simple as possible, using automatic non-return valves and a hydraulic cylinder creating a head of water to be pumped into storage lagoons, then released through turbines in a steady flow.