If you saw the movie Das Boot, he's the journalist that was brought aboard. After the patrol, he wrote a book in which it had many of the pictures he took. You can still order this book, but im not sure if the pictures are actually on the web. He also wrote the book in 1975 that the movie was based on.
He actually died 3 days ago.
http://en.wikipedia.org/wiki/Lothar-...nther_Buchheim