Unsinkable Sam (aka Oskar/Oscar) - German ship’s 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" also known as Oscar, was a ship's cat who served in the German Kriegsmarine and the British Royal Navy during World War Two and survived the sinking of the Bismark, HMS Cossack, and HMS Ark Royal (which had helped sink the Bismark). Following the loss of the Ark Royal, he was transferred to shore duty at Gibraltar and Belfast. He died, in Ireland, in 1955.
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."