War submaries movies

[Chisum]

Hi,

I can't find the thread about the movie so there is an other.

I'm watching right know on the german television, a old sub movie.

There is it:

http://www.imdb.com/title/tt0050478/

Probably unknowed by many people(including me lol) but it's a very good movie. All sub scenes filmed on a real U boot but I don't know what U-boot exactly.

Hope you can found it somewhere...