HMS Otus (S18)
HMS Otus (S18) is a former Oberon-class diesel-electric submarine of the Royal Navy. Laid down 31 May, 1961, Otus commissioned in October, 1963. She conducted exercises in the Atlantic, followed by visits to the US and Canada during her first patrol, and was part of the Fleet Review of Queen Elizabeth's Silver Jubilee in 1977. In 1987, Otus hosted an international trial off Bergen, Norway, where submariners made progressively deeper escape dives, with two of the divers setting a new record of 600 feet (183m). Otus participated in the 1991 Gulf War, returning to port flying a Jolly Roger, indicating that she operated with special forces. She decommissioned by 1993, and was sold for scrapping. However, Otus was saved when she was purchased by a German, and is now moored in Sassnitz as a naval museum.