The Type VII U-Boat: Type VII’s used their 8.8cm main deck gun in the first half of the war to save torpedoes. Most deck guns were removed later in the war due to the decreased ability to operate on the surface.
Charles McCain is a Washington DC based freelance journalist and novelist. He is the author of "An Honorable German," a World War Two naval epic. You can read more of his work on his website: http://charlesmccain.com/ View all posts by Charles McCain