故事描述一美国军舰在运送物品的途中遭德国潜艇的攻击，舰队全体官兵纷纷奋勇应战，于是展开一场凶斗 。
Humphrey Bogart
Lt. Joe Rossi
Raymond Massey
Capt. Steve Jarvis
Alan Hale
Boats O'Hara
Julie Bishop
Pearl O'Neill
Ruth Gordon
Mrs. Sarah Jarvis
Sam Levene
Abel 'Chips' Abrams
Dane Clark
Johnnie Pulaski
Peter Whitney
Whitey Lara
Dick Hogan
Cadet Robert Parker
Louis Adlon
German Ensign (uncredited)
Iris Adrian
Jenny O'Hara (uncredited)
Frank Alten
German (uncredited)
Kirk Alyn
Brazilian Gun Captain (uncredited)
C.E. Anderson
Bearded Lieutenant Commander (uncredited)
