乔治·墨菲
George Murphy
饰：Lieutenant Thomas L. 'Tom' Sands
简·维亚特
Jane Wyatt
饰：Myra Mallory
杰基·库珀
Jackie Cooper
饰：Joe 'Babe' Duttson
卡尔·埃斯蒙德
Carl Esmond
饰：Richard 'Dutch' Kroner
戴斯·阿纳兹
Desi Arnaz
饰：Pat Tarriba
雷·柯林斯
Ray Collins
饰：Captain McCall
弗兰克·詹克斯
Frank Jenks
饰：Sampier
John Maguire
饰：James Bayless
弗兰克·芬顿
Frank Fenton
饰：Hodum
Joey Ray
饰：James Dennis
Marten Lamont
饰：Lieut. Comdr. Murray, navy doctor
斯坦利·安德鲁斯
Stanley Andrews
饰：Judge advocate (uncredited)
George Blagoi
饰：U-Boat captain (uncredited)
Sven Hugo Borg
饰：U-Boat first officer (uncredited)
埃贡·布雷赫尔
Egon Brecher
饰：U-Boat commander (uncredited)
Joe Cunningham
饰：Mr. Duttson (uncredited)
赫尔穆特·丹丁
Helmut Dantine
饰：Frightened young German seaman (uncredited)
Edgar Dearing
饰：Bud, chief petty officer (uncredited)
拉尔夫·邓恩
Ralph Dunn
饰：Policeman bringing Sampier (uncredited)
Bud Geary
饰：Quartermaster McPhail (uncredited)
Joseph W. Girard
饰：Naval captain at hearing (uncredited)
William Haade
饰：Pier 7 guard (uncredited)
Russell Hoyt
饰：(uncredited)
迈克·拉里
Mike Lally
饰：Merchant Marine sailor with water hose (uncredited)
Lyle Latell
饰：Oiler (uncredited)
Jack Martin
饰：U-Boat first officer (uncredited)
乔治·梅尔福德
George Melford
饰：Chief engineer (uncredited)
蒙特·蒙塔古
Monte Montague
饰：Third mate (uncredited)
威廉·H·奥布莱恩
William H. O'Brien
饰：Clerk at hearing (uncredited)
西里尔·环
Cyril Ring
饰：Mr. Reynolds, first officer (uncredited)
Franklin Delano Roosevelt
Franklin Delano Roosevelt
饰：Himself (uncredited) (archive footage)
Hans Schumm
饰：U-51 captain recognizing Kroner (uncredited)
Bob Stevenson
Bob Stevenson
饰：First officer of 'Odin' (uncredited) (as Bob Stevenson)
Fred Sweeney
饰：Lookout (uncredited)
Nicholas Vehr
饰：U-Boat first officer (uncredited)
Wilhelm von Brincken
饰：Captain of 'Odin' (uncredited)
汉斯·海因里希·冯·特尔瓦多夫斯基
Hans Heinrich von Twardowski
饰：U-Boat captain (uncredited)
Malcolm Waite
饰：Top lookout (uncredited)
Max Waizmann
饰：German agent (uncredited)
玛丽·扬
Mary Young
饰：Mrs. Duttson (uncredited)
马克斯·贝尔
Max Baer
饰：Coxswain G. Berringer
Lee Bonnell
饰：Kovac
Howard Lane
Howard Lane
饰：Lookout (uncredited)
Sigurd Tor
Sigurd Tor
饰：German first officer (uncredited)
帕特·奥布莱恩
Pat O'Brien
饰：Chief Michael `Mike` Mallory
约翰·麦圭尔
John McGuire
饰：James Bayless
Sigfrid Tor
饰：演员 Actor/Actress
Robert R. Stephenson
饰：演员 Actor/Actress