It wasn't uncommon for some of the U-Boat crews to go for a swim in warm waters in safe areas like the Azores or Canaries. Doubly beneficial with no showers on board. One crewmember did have to remain on deck with a rifle to keep an eye out for sharks.
Kinda curious as to why this question is in the SH4 area. :hmm:
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--Mobilis in Mobili--
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