Ocean current turbine

An ocean current turbine for converting water currents' energy, comprising the following features:

• a main frame arranged to stand submerged in a water current in the sea or in a river,
• wherein the main frame comprises
• a bow part arranged to face directly towards the water current,
• one or more starboard and port endless rotation chains with plates arranged to being captured at the bow part and driven rearward by the water current,
• wherein the rotation chain runs about and in driving engagement with one or more driven wheels that operates a generator, and
• port and starboard side frames that are continuously convex and extends from the bow section and rearward to
• a transverse wide stern that is narrower than the greatest distance between port and starboard side frames,
• wherein the rotation chains comprise a starboard and a port endless rotation chain with the plates, arranged to run along port and starboard side frames, and
• a turning mechanism arranged to turn each plate to catch the water current at the bow part, so that each plate is driven rearward along the starboard, respectively port side frame, back to the rear by of the wide stern part, and where the turning mechanism turns each plate to a passive state where the plate does not substantially catch the water when the plate is led forward again by the rotation chain in a shielded cavity between starboard and port side frames and extending to the bow part.