USS Cyclops
From Tardis Wiki, the free Doctor Who reference
The USS Cyclops was a United States Navy vessel.
The ship mysteriously sank in the Bermuda Triangle in 1918. The Tenth Doctor and Heather McCrimmon discovered that it had been attacked by an Octopod whose spacecraft had crashed in the Triangle previously. The Doctor told Heather that he could not save the ship, as its sinking was part of history. (COMIC: Cyclops)