Requins d'acier

Tyrone Power

Lt. Ward Stewart

Anne Baxter

Jean Hewlett

Dana Andrews

Lt. Cdr. Dewey Connors

James Gleason

Chief Mike 'Mac' McDonnell

May Whitty

Grandmother

Harry Morgan

Brownie

Ben Carter

Oliver Cromwell Jones

Stanley Andrews

Shipwrecked Captain (non-crédité)

John Archer

Curly Bowman (non-crédité)

Gene Rizzi

Seaman Rizzi (non-crédité)

Frederic Brunn

Q Boat Lieutenant (non-crédité)

Frank Conroy

Capt. Bryson

Fred Aldrich

German Seaman

David Bacon

Lieutenant

Brooks Benedict

Angry Man at Hotel Registration Desk

Lulu Mae Bohrman

Undetermined Secondary Role

Dorothy Brent

Schoolgirl

Paul E. Burns

Simmons - Desk Clerk

Harry Carter

Sailor

Gene Collins

Boy in Lifeboat

James Conaty

Hotel Desk Clerk

Frank Dawson

Henry the Butler

James Eagles

Officer

Edward Earle

Wreckage Victim

Chester Gan

Lee Wong

Charley Grapewin

Pop

Thurston Hall

Senator from Texas

Sally Harper

Teenage Student

George Holmes

Crew Member

Kathleen Howard

Miss Bromley

Sue Jolley

Schoolgirl

Florence Lake

Doris - Jean's Roommate

Peter Leeds

Shore Police

Trudy Marshall

Telephone Operator

Leila McIntyre

Senator's Wife

Betty McKinney

Schoolgirl

Malcolm 'Bud' McTaggart

Sailor

Edward McWade

Crony

James Metcalf

Undetermined Secondary Role

Hans Moebus

German Officer

Edmund Mortimer

Man at Hotel Registration Desk

John Mylong

Captain of Submarine

Netta Packer

Mother

Tom Quinn

Hotel Guest

Otto Reichow

German Signalman

Lionel Royce

German Q-Boat Commander

Floyd Shackelford

Porter

Paul Stanton

Officer

Charles Tannen

Seaman Hammond

Ruth Thomas

Schoolgirl

Sigfrid Tor

German Soldier

Nicholas Vehr

Russian Officer

Hans von Morhart

Y Gun Operator

Minor Watson

Adm. Bob Stewart

Cecil Weston

Woman

Bruce Wong

First Waiter

William Yetter Sr.

Tanker Lieutenant