 Carole LandisJune McCarthy | June McCarthy |
 Henry WilcoxonCaptain Jimmy Madden | Captain Jimmy Madden |
 Onslow StevensCarl Cutler | Carl Cutler |
 Kathleen HowardMaggie Clancy | Maggie Clancy |
| WWally RairdenBlake, 3rd Mate | Blake, 3rd Mate |
 Sven Hugo BorgSven | Sven |
 Henry VictorCmdr. Bulow | Cmdr. Bulow |
 Roland VarnoLt. Schmidt | Lt. Schmidt |
 Louis AdlonLerner | Lerner |
| WWilly KaufmanLt. Felder | Lt. Felder |
 Monte BlueCaptain Norberg | Captain Norberg |
 Matthew BoultonCaptain Howard | Captain Howard |
| GGohr Van VleckCaptain Van Wyck | Captain Van Wyck |
 Jean Del ValCaptain Benoit | Captain Benoit |
 Kay LinakerFlossie La Mare | Flossie La Mare |
| RReed HowesHughes, Carl's Chauffeur | Hughes, Carl's Chauffeur |
| PPhil WarrenSparks, Radio Operator | Sparks, Radio Operator |
 Kurt KreugerFranz, German Seaman | Franz, German Seaman |
| JJack RobertsJack, American Seaman | Jack, American Seaman |
 Eric AldenAugust - German Seaman | August - German Seaman |
| HHarry A. BaileySugar Daddy | Sugar Daddy |
| HHolger BendixenWilheim, German Seaman | Wilheim, German Seaman |
| EEdwin BrianBoy | Boy |
| JJess Lee BrooksSecond Fisherman | Second Fisherman |
 Willy CastelloRadio Operator | Radio Operator |
| DDavid CavendishGunnery Officer | Gunnery Officer |
| JJack ChapinMessboy | Messboy |
| WWorth CrouchQuartermaster | Quartermaster |
 Sidney D'AlbrookMan on Wharf | Man on Wharf |
| AAlbert D'ArnoSubmarine Commander | Submarine Commander |
