After its first war patrol, it put in at Wilhelmshaven probably sometime in April 1941 where it was given the coating, it covered the conning tower and sides of the U-boat, but not to the deck.
It put in at Wilhelmshaven probably sometime in April 1941 where it was given the coating, it covered the conning tower and sides of the U-boat, but not to the deck. This was after its first war patrol.