Captain George Waite
Chief Engineer Charles Pollard
2nd. Officer Hawkins
3rd. Engineer Willey
Apprentice John Jones
Cadet Roy Housden
Boatswain W.E. Fletcher
Pumpman Davies
Steward
Messboy John Jamieson
'Yank' Preston
Deckhand
Deckhand (as Duncan MacIntyre)
Greaser John Boyle
Capt. E.S.F. Fegen V.C. Royal Navy
Gunnery Control Officer
Officer of the Watch
Midshipman
Mr. Justice Langton
R.J.E. Dodds - Shipping Manager
Capt. Smith - S.S. Gloucester City
Shopgirl
Naval Officer (uncredited)
Mr. Nelson (uncredited)
Barrister (uncredited)
Harbour Pilot (uncredited)
Tugboat Captain (uncredited)
Youngster (uncredited)