Das Boot (The Boat) is a 1981 West German war film written and directed by Wolfgang Petersen, produced by Günter Rohrbach, and starring Jürgen Prochnow, Herbert Grönemeyer and Klaus Wennemann. It has been exhibited both as a theatrical release (1981) and a TV miniseries (1985). Also, several different home video versions, as well as a director’s cut (1997) supervised by Petersen, have been released.
https://en.wikipedia.org/wiki/Das_Boot
Only allowed in the US.
If you have the opportunity, watch it with surround sound. Sitting in darkness hearing rivets pop one by one all around you is something else.