On May 27, 1941, the Bismarck was spotted by a pair of British destroyers and sunk. In total, 2,200 German soldiers were on the ship when it went down and 115 people (1 cat) survived. The surviving cat was a black and white patched cat named Unsinkable Sam (Oscar), who was discovered floating on a board by British troops. He was the only survivor found by the British destroyer HMS Cossack.
Unsinkable Sam (also known as Oskar or Oscar) was the nickname of an alleged German ship's cat who reportedly saw service in both the Kriegsmarine and Royal Navy during the Second World War, serving on board three vessels and surviving the sinking of all three.