I just finished this book about a group of American Shipwreck diver’s off the coast of New Jersey who discovered a wreck of an unknown German U-Boat from ww2. It goes into the research and many dives it took them untill they where able to id the mysterious U-Boat. It also give’s some interesting insight into the lives of some of the member’s of the U-Boat crew. I highly recommend this book. Author is Robert Kurson,I found it in my public library,so I don’t know if it’s still in print.
