If anyone has any of the following and could scan it or something I would metaphorically suck your dick:
German U-Boat Commanders of World War II: A Biographical Dictionary
Axis Submarine Successes of World War Two: German, Italian and Japanese Submarine Successes, 1939-1945
German U-Boat Losses During World War II: Details of Destruction
The Milk Cows: The U-boat Tankers at War 1941-1945
U-Boat War Patrol: The Hidden Photographic Diary of U-564
The Destruction of Convoy PQ. 17 (the one by David Irving)
The Type VII U-boat - Anatomy of the Ship (by David Westwood)
Type VII U-Boats (by Robert C. Stern)
..Or really any book with an in-depth anatomical breakdown of u-boats.
And along with that, if anyone has a problem with or some type of knowledge about one of these I'd like to hear it. The first and second to last are going to be the biggest because they both go for anywhere from $300 to $2,000 typically, but the rest count as well.