Outstanding book. I read it in college many years ago.
Interesting bit of trivia: They often had American currency on board and when they weren't sinking ships off the coast, they used to sneak small parties ashore to go grocery shopping.
I also think ‘Operation Drumbeat’ is where it was ‘revealed’ that in addition to using the lights from the coastline to silhouette targets, that when going into New York Harbor they basically used an Esso Road Map to navigate LI Sound, using traffic lights etc as guides.
Whenever I see ‘The Enemy Below’ Capt Hardegan comes to mind as he appeared to be someone else who was ‘caught up in the war’ as was the Kurt Jurgens character.
I always thought it ‘strange’ that the only High Command Officer that virtually survived the war and Nuremberg ‘unscathed’ was Doenitz, the Submarine Leader and a short time successor to Hitler.. (Must have been real cooperative when the ‘time came’)