H.M.S. Sheffield as H.M.S. Ajax
I.N.S. Delhi (formerly Achilles) as H.M.N.Z.S. Achilles
H.M.S. Jamaica as H.M.S. Exeter
At the beginning of the film, we see this acknowledgement: There are hundreds of invisible people behind every film. Behind this one there are thousands. We would like to thank them collectively, for if we named them all there would be no room for the film. Then as the opening credits roll, an extensive list of acknowledgements (mostly naval officers) is shown in the background.
H.M.S. Cumberland as H.M.S. Cumberland
The U.S. Heavy Cruiser "Salem" as the German Pocket Battleship "Admiral Graf Spee"