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

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