Unsinkable Sam (aka Oskar/Oscar) - cat who saw service in both the Kriegsmarine and Royal Navy during the Second World War, serving on board three vessels (the Bismarck, the HMS Cossack and the HMS Ark Royal) and surviving the sinking of all three.
Unsinkable Sam switched sides from the Nazi to the Allied forces. Survived 3 Ships Sinking in WWII. Pastel portrait “Oscar, the Bismarck’s Cat” by Georgina Shaw-Baker @ National Maritime Museum, Greenwich
The Unsinkable Sam, the most famous mascot of the British Royal Navy, was in turn the ship's cat of the Bismarck, HMS Cossack, and HMS Ark Royal and survived the torpedoeing of all three ships before being retired to a home on dry land.
Atlantic Conference August Churchill restrains 'Blackie' the cat, the mascot of HMS Prince of Wales, from joining the USS McDougal, an American destroyer, while the ship's company stand to attention during the playing of the National Anthem.
Titanic: The Art of Ken Marschall - Close-Up: Boilers - This detailed view shows crew members in Boiler Room No. 6 being overtaken by a sudden gush of freezing ocean water, moments after the Titanic struck an iceberg.
The cat pictured is Seaman Simon. He was a WWII hero to men on the Amethyst. The article attached is about a different cat called Sam. The article is titled, "Unsinkable Sam: The Cat that Survived Three Ships Sinking in WWII.