Unsinkable Sam
Oscar (known by his nickname, Unsinkable Sam, or by the Germanized spelling of his name, Oskar; before 1941 – 1955) was a ship's cat who purportedly served during World War II with both the Kriegsmarine and the Royal Navy and survived the sinking of three ships in 1941 – the German battleship Bismarck, and then the British destroyer HMS Cossack and aircraft carrier HMS Ark Royal. While contemporary reports of the story were widely publicised in 1941 after the sinking of Ark Royal, including photographs of Oscar, there is no firm evidence to link the cat to Bismarck or Cossack.