Ive got no idea what the concept of that is, Im sure someone somewhere must know. All I know is the tank underneath it. It is a fully fledged "kosher" tank as well, not some wierd experimental thing.
This is from a link posted by Hanno (MLU), hope you dont mind me posting it up on here- its a very quiet weekend. Some LRDG wrecks in pristine condition in Libya.
http://picasaweb.google.com/houblebouble/EMERIIII2008