Top Billed Cast

1. 

   Clive Brook

   Captain Tom Armitage

2. 

   John Clements

   Lieutenant Cranford

3. 

   Edward Chapman

   Captain Eckersley

4. 

   Judy Campbell

   Lucy Armitage

5. 

   Penelope Dudley-Ward

   Mabel

6. 

   Edward Rigby

   Mr. Matthews

7. 

   Allan Jeayes

   Commander Blount

8. 

   Michael Wilding

   Dot

9. 

   Harold Warrender

   Lt. Commander Martin

10. 

    David Hutcheson

    Captain Sandeman

11. 

    George Carney

    Bates

12. 

    Al Millen

    Knowles

13. 

    Charles Farrell

    Walker

14. 

    John Laurie

    Gates

15. 

    George Benson

    Parker

16. 

    Hay Petrie

    Minesweeper Skipper

17. 

    Mervyn Johns

    His Mate

18. 

    Albert Lieven

    Commander U.37

19. 

    John Wengraf

    Commander Deutschland

20. 

    Edward Lexy

    Merchantman Skipper

21. 

    John Glyn-Jones

    Mate

22. 

    John Boxer

    German Captain

23. 

    John Carol

    Edmonds

24. 

    Alec Clunes

    Bit Part

25. 

    Anton Diffring

    U-Boat Officer

26. 

    Derek Elphinstone

    Hawkins

27. 

    Alf Goddard

    Bosun's Mate

28. 

    Stewart Granger

    Sutton

29. 

    Bryan Herbert

    Signals Yeoman

30. 

    Patrick Holt

    Holt

31. 

    James Knight

    Admiral

32. 

    Maire O'Neill

    Mary Hogan

33. 

    Charles Rolfe

    Peacock - Wardroom Steward

34. 

    Harry Terry

    Sailor

35. 

    Charles Williams

    'Shorty' Howard

36. 

    Howard Lang

    Gunnery Officer (uncredited)