导演 约翰·福特

Cmdr. Robert 'Bob' Kingsley George O'Brien

Anna Marie Von Steuben Marion Lessing

Fraulein Lolita Mona Maris

Chief Mike 'Guns' Costello Walter C. Kelly

'Lug' Kaufman Warren Hymer

Ens. Richard 'Dick' Cabot (as Gaylord Pendleton) Steve Pendleton

Chief Joe Cobb Walter McGrail

Lt. 'Mac' McGregor Larry Kent

Baron Ernst von Steuben (U-boat commander) Henry Victor

Franz Shiller John Loder

German Chief Petty Officer (uncredited) Philip Ahlm

Naval Reservist (uncredited) Al Bennett

Naval Reservist/Swimmer and Diver (uncredited) Earl Wayland Bowman

Naval Reservist (uncredited) Bill Brande

Mugs O'Flaherty (uncredited) William Collier Sr.

Naval Reservist (uncredited) Leonard Davison

Naval Reservist (uncredited) Joseph Depew

Eric - Captain of Trawler (uncredited) Francis Ford

Naval Reservist (uncredited) Robert Ford

Fritz Kampf (Second Officer of U-172) (uncredited) Hans Fuerberg

Hoffman (uncredited) Curt Furberg

Naval Reservist (uncredited) Al Generaux

Naval Reservist (uncredited) Bob Gillette

Naval Reservist (uncredited) George Golden

Elmer Harrigan (uncredited) Ben Hall

Naval Reservist/Swimmer and Diver (uncredited) George Harris

Naval Reservist (uncredited) Bob Kyle

Naval Reservist (uncredited) Jack Martin

Bugler on Gun Crew (uncredited) Harry Mount

Naval Reservist (uncredited) Jack Murphy

Merkel (uncredited) Maurice Murphy

Naval Reservist (uncredited) Bob Nelson

Naval Reservist (uncredited) Edward Peil Jr.

'Butch' Wagner (uncredited) Nat Pendleton

'Skits' Reilly (uncredited) Terrance Ray

Gunner (uncredited) Marvin Schecter

German Officer (uncredited) Harry Schultz

Adolph Brucker (uncredited) Ferdinand Schumann-Heink

Naval Reservist (uncredited) Robert Shepherd

Gunner and drill sergeant (uncredited) Harry Strang

German Chief Petty Officer (uncredited) Anton Tell

Naval Reservist (uncredited) George Templeton

Winkler (uncredited) Harry Tenbrook

Naval Reservist/Swimmer and Diver (uncredited) T.J.F. von Blankerburg

Naval Reservist/Swimmer and Diver (uncredited) Frank Walton

Levinsky (uncredited) Harry Weil

German Chief Petty Officer (uncredited) Hans Winterhalder