Pat O'Brien

Character: Chief Michael 'Mike' Mallory

George Murphy

Character: Lt. Thomas L. 'Tom' Sands

Jane Wyatt

Character: Myra Mallory

Jackie Cooper

Character: Joe 'Babe' Duttson

Carl Esmond

Character: Richard 'Dutch' Kroner

Max Baer

Character: Coxswain G. Berringer

Desi Arnaz

Character: Pat Tarriba

Ray Collins

Character: Capt. McCall

Franklin D. Roosevelt

Character: Himself (Voice)

Lee Bonnell

Character: Kovac

Frank Jenks

Character: Sampier

John McGuire

Character: James Bayless (as John Maguire)

Frank Fenton

Character: Hodum

Joey Ray

Character: James Dennis

Marten Lamont

Character: Lt. Cmdr. Murray - navy doctor