Oskar Origins
Oskar was originally named by the German and employed aboard the Bismarck Battleship before it's demise.
Oscar Renamed
Oskar was found floating along on remnants of the Bismarck by British soldiers. He was given a new name by the British soldiers after they took him in.
Unsinkable Sam The Legend
After his third ship went down, he resided with the Governor of Gibralter before retiring in a seaman's home in Belfast, passing away in 1955. He gained a new name after his near-impossible feats.