North Atlantic
From Tardis Wiki, the free Doctor Who reference
The North Atlantic Ocean, simply the North Atlantic, was situated to the east of North America and west of the British Isles. (PROSE: The Americas, TV: The Lie of the Land)
History
In 1943, during the Second World War, U-boats operated in the North Atlantic. (TV: The Curse of Fenric) It was the namesake of the North Atlantic Treaty Organisation, developed in the late 1940s after the war. (PROSE: Endgame)