Thatīs a nice pice of cloth. But i think itīs to modern for use with a WWII simulator.
When i was at sea with U17 (S196) and U33 (S183) we wore either BEGA-trowsers and t-shirts or the full BEGA-uniform.
BEGA stands for:
BordEinsatzGefechtsAnzug
This cloth are made from leight, nonflammable and acidsave stuff. Realy comftable to wear. When it get wet it drys very fast and its stronger than a well (highpriced) jeans. When i leaved the german navy, i got one of those shirts as a gift from my crewmembers.