I am aware of "Das Boot", but have never seen either the film or the TV episodes.
However ... I do
have a paperback translation of Lothar-Günther Buchheim's famous 1973 novel right here!
Even though it is apparently an abridged version of J. Maxwell Brownjohn's* translation, the book (entitled, believe it or not, "The Boat") still weighs in at 480 pages.
I hope to get around to reading it one of these days.
But do you also remember the ska records of "Guns of Navarone" by the Skatalites (the best-selling ska single of all time, apparently) - and "Al Capone" (Scarface, of course) by Prince Buster?
* I kid ye not, BTW.