That's the movie that got me hooked on U-Boats.
According to Clay Blair in "Hitler's U-Boat War: The Hunted, 1939-1942" it was not at all popular with German submariners though. He says they were "appalled by his postwar writings and the film".
Also U-96 was only bottomed for about five hours to make repairs before it aborted to France, something Lothar greatly exagerrated in the movie. Plus of course, there was no air raid at the end of the patrol. Great ending though.
So I'd hesitate to say it's true and accurate, but then what movies are? I still love it
