http://imdb.com/title/tt0050356/

The Enemy Below (1957)
7.6/10 from 7900 users Updated : 2017-06-17
Action , Adventure , Drama , Thriller , War
Robert Mitchum , Curd Jürgens , David Hedison , Theodore Bikel , Russell Collins , Kurt Kreuger , Frank Albertson , Biff Elliot
Dick Powell
98
1957
During World War II| the USS Haynes| an American destroyer escort discovers a German U-boat in the South Atlantic. A deadly duel between the two ships ensues| and
Captain Murrell must draw upon all his experience to defeat the equally experienced German commander.