Mar Cruel
Voltar
Jack HawkinsEricson
Donald SindenLockhart
Denholm ElliottMorell
John StrattonFerraby
Stanley BakerBennett
Liam RedmondWatts
Meredith EdwardsYeoman Wells
Bruce SetonTallow
John WarnerBaker
Barry LettsRaikes
Gerard HeinzPolish Captain- Fred GriffithsGracey
Glyn HoustonPhillips
Virginia McKennaJulie Hallam
Megs JenkinsTallow's Sister
June ThorburnDoris Ferraby
Moira ListerElaine Morell
Alec McCowenTonbridge- Leo PhillipsWainwright
- Dafydd HavardSignalman Rose
Laurence HardySellars
Sam KyddCarslake
John SingerGray- Barry SteeleBroughton
- Gerik SchjelderupNorwegian Captain
- Gaston RicherFrench Captain
Andrew CruickshankScott Brown- Kenn KennedyAllingham
Harold GoodwinASDIC Operator
George CurzonAdmiral at Party- Anthony SnellR.N. Lieutenant
- Ronald SimpsonR.N. Captain
Don SharpLieutenant-Commander- Herbert C. WaltonThe Waiter
- Jack HowardA Survivor
Russell WatersA.R.P. Warden- Harold JamiesonA.R.P. Warden
- Warwick AshtonPetty Officer Instructor
Walter FitzgeraldWarden (sem créditos)
Paddy JoyceSonar Operator (sem créditos)
Richard LeechSailor (sem créditos)
Jim BradySailor in Water
Alan WebbAdmiral Murray-Forbes (sem créditos)