 William HoldenCapt. David Ross | Capt. David Ross |
 Sophia LorenStella | Stella |
 Trevor HowardCapt. Chris Ford | Capt. Chris Ford |
 Bernard LeeCmdr. Wadlow | Cmdr. Wadlow |
 Oskar HomolkaVan Dam | Van Dam |
 Kieron MooreKane | Kane |
 Noel PurcellHotel Clerk | Hotel Clerk |
 Bryan ForbesWeaver | Weaver |
 Beatrix LehmannHousekeeper | Housekeeper |
 Rupert DaviesBaker | Baker |
 Russell WatersSparks | Sparks |
| SSidney VivianGrogan | Grogan |
 Irene HandlClerk | Clerk |
 John CrawfordAmerican Captain | American Captain |
 Jameson ClarkEnglish Captain | English Captain |
 Guy StandevenPoliceman (uncredited) | Policeman (uncredited) |
| KKeith FaulknerSignalman (uncredited) | Signalman (uncredited) |
 Michael CaineSeaman (uncredited) | Seaman (uncredited) |
| BBart AllisonSeaman on W88 (uncredited) | Seaman on W88 (uncredited) |
 BelitaCanteen Hostess (uncredited) | Canteen Hostess (uncredited) |
| PPauline ChamberlainWoman Dancing at Forces Centre (uncredited) | Woman Dancing at Forces Centre (uncredited) |
| KKeith FaulknerSeaman on W88 (uncredited) | Seaman on W88 (uncredited) |
 Renée HoustonCanteen Worker (uncredited) | Canteen Worker (uncredited) |
| RRichard NellerOfficer in Operations Room (uncredited) | Officer in Operations Room (uncredited) |
| EErnie RiceOfficer in Operations Room (uncredited) | Officer in Operations Room (uncredited) |
 Robert RiettiDubbing (voice) (uncredited) | Dubbing (voice) (uncredited) |
| JJohn TathamSalvage Unit Captain (uncredited) | Salvage Unit Captain (uncredited) |
| RReg ThomasonSoldier at Dance (uncredited) | Soldier at Dance (uncredited) |
