1. 
   ROV
   Remote Operated Vehicles are remote controlled underwater robots used instead of divers for difficult operations, e.g. on great depth. More info.
   Found op http://www.abc.se/~pa/uwa/glossary.htm
   
   
2. 
   ROV
   Abbreviation for remotely operated vehicle, usually a submersible tethered to a ship, with facilities for video, remote sampling by grabbing arms, and precise navigation
   Found op http://life.bio.sunysb.edu/marinebio/glossary.rs.html
   
   

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