Tallulah Bankhead

as Diana Sturm

Gary Cooper

as Lt. Sempter

Charles Laughton

as Cmdr. Charles Sturm

Cary Grant

as Lt. Jaeckel

Paul Porcasi

as Hassan

Juliette Compton

as Mrs. Planet

Henry Kolker

as Hutton

Dorothy Christy

as Mrs. Crimp

Arthur Hoyt

as Mr. Planet

Gordon Westcott

as Lt. Toll

James Dugan

as Condover

Peter Brocco

as Wireless Operator (uncredited)

Jack Gardner

as Submarine Crewman (uncredited)

John George

as Man in Crowd (uncredited)

Henry Guttman

as Submarine Crewman (uncredited)

Fred Kohler Jr.

as Submarine Crewman (uncredited)

George Magrill

as Submarine Crewman (uncredited)

Dave O'Brien

as Submarine Crewman (uncredited)

Anderson Lawler

as Sailor (uncredited)

Lucien Littlefield

as Shopkeeper (uncredited)

Wilfred Lucas

as Court Martial Judge (uncredited)

Kent Taylor

as A Friend at Party (uncredited)