SHC Wavedancer, with a new patents pending design, is capable of transforming from a high speed catamaran to a semi-submersible platform. The desingers believe that this innovation has enormous global potential for use in the offshore energy markets, such as platform personnel transfers and wind farm maintenance, offshore survey, inspection and installation works. The patents pending Submersible Hull Vessel (SHV) concept is owned by OSSeas Ltd and is the only vessel which can change its own internal volume.