This is the second book in a two volume set, however it is also a stand-alone book covering the submarine development of Germany during the 1930s-40s. It's mainly a photo essay, lots of photos with data filled captions. The focus is on production and maintenance of the boats, from type-2 (II) to type 23 (XXIII).
Now out of print.
This copy is in Very Good condition. There is some spotting/marking of the page edges and dust jacket and it is a little musty from storage. As usual, photos are of the item that you will receive.