An underwater apparatus for performing subsurface operations adapted to be operated from a remote location above the surface of a body of water is disclosed. The apparatus includes a linelatch system that is made up of a tether management system connected to a flying latch vehicle by a tether. The tether...http://www.google.com/patents/US6223675?utm_source=gb-gplus-sharePatent US6223675 - Underwater power and data relay
