- Carole Landis
- June McCarthy
- Henry Wilcoxon
- Captain Jimmy Madden
- Onslow Stevens
- Carl Cutler
- Kathleen Howard
- Maggie Clancy
- Wally Rairden
- Blake, 3rd Mate
- Sven Hugo Borg
- Sven
- Henry Victor
- Cmdr. Bulow
- Roland Varno
- Lt. Schmidt
- Louis Adlon
- Lerner
- Willy Kaufman
- Lt. Felder
- Monte Blue
- Captain Norberg
- Matthew Boulton
- Captain Howard
- Gohr Van Vleck
- Captain Van Wyck
- Jean Del Val
- Captain Benoit
- Kay Linaker
- Flossie La Mare
- Reed Howes
- Hughes, Carl's Chauffeur
- Phil Warren
- Sparks, Radio Operator
- Kurt Kreuger
- Franz, German Seaman
- Jack Roberts
- Jack, American Seaman
- Eric Alden
- August - German Seaman
- Harry A. Bailey
- Sugar Daddy
- Holger Bendixen
- Wilheim, German Seaman
- Edwin Brian
- Boy
- Jess Lee Brooks
- Second Fisherman
- Willy Castello
- Radio Operator
- David Cavendish
- Gunnery Officer
- Jack Chapin
- Messboy
- Worth Crouch
- Quartermaster
- Sidney D'Albrook
- Man on Wharf
- Albert D'Arno
- Submarine Commander
- Harry Depp
- Mousey Little Man
- Vernon Downing
- Martin
- Roland Drew
- Navigating Officer
- Charles Flynn
- Heinrich, German Seaman
- Hans Fuerberg
- Radio Man
- Douglas Grant
- Hans, German Seaman
- Donald Grayson
- Ernst, German Seaman
- Edward Groag
- Herman, German Seaman
- Chuck Hamilton
- Man on Wharf
- Darryl Hickman
- Benny
- Leyland Hodgson
- Listener
- John Indrisano
- Bo's'n
- Larry Lawson
- Larry, American Seaman
- George Magrill
- Man on Wharf
- Wally Maher
- Jenkins
- Anthony Marsh
- Radio Operator on the Aleria
- Wanda McKay
- Lois
- Norma Gene Nelson
- Annette
- Otto Reichow
- Siegfried, German Seaman
- Ferdinand Schumann-Heink
- Submarine Captain
- Hans Schumm
- Sentry
- Rudolf Steinboeck
- Nick, German Seaman
- Ben Taggart
- Cop
- Sigfrid Tor
- Albert, German Seaman
- Nicholas Vehr
- Adolph, German Seaman
- Emmett Vogan
- Cop
- Chester Walker
- Karl, German Seaman
- Pierre Watkin
- Straker
- Ernest Whitman
- First Fisherman
- Leonard Willey
- British Cruiser Captain
- Dick Winslow
- Messenger
- Philip Winter
- Chalmers
- Tom Wintle
- Man on Wharf
- Henry Zynda
- Submarine Commander
