Weldon Heyburn
— Chief Bos'n Mate Jim Wilson
Jeanne Madden
— Patricia 'Pat' Collins
Warren Hymer
— Mate 'Spud' Jones
Penny Singleton
— Florence 'Toots' Riley
J. Carrol Naish
— Harry Durant
Joyce Compton
— Blondie
Charles Trowbridge
— Maxwell Gordon
Syd Saylor
— Henchman Weasel
Lane Chandler
— Lt. Hays (radio voice) / Insp. L. McGrath
Benny Burt
— Henchman Maxie
Ralph Sanford
— Henchman Turk
Don Rowan
— Henchman Lew
Bryant Washburn
— Wilbur Crane
Skippy
— Skipper