A conversion system that converts linear motion from movement of sea water into rotating motion comprising of a plurality of linked bodies (1) , a plurality of bearing constellations (2) where each bearing constellation connects two linked bodies and thereby a linked body chain (3) is formed, and a rotating body (4) around which all or a part of the linked body chain is wound. The conversion system can be used for conversion of energy from sea waves, for desalination of sea water or for mooring systems.
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