Jerry,
Did you read "The Last Dive" about the father and son who died on that U-boat wreck? Really good, and a reminder that you can't get careless with scuba diving.I gave that book the "National Geographic" examination (pictures and captions) at Barnes and Noble. "Shadow Divers" covers that incident well, with frank detail of the tragedy and sensitivity toward the father and son. John Chatterton and Richie Kohler relate that experience within the context of the discovery of the U-boat's identity, over a five year period.
You'll like "Shadow Divers", I'll bet. A sobering read.
Now get out there and have fun.
Steve