Sidney James
— Captain Wellington Crowther
Kenneth Williams
— First Officer Leonard Marjoribanks
Kenneth Connor
— Dr. Arthur Binn
Liz Fraser
— Glad Trimble
Dilys Laye
— Flo Castle
Esma Cannon
— Bridget Madderley
Lance Percival
— Wilfred Haines
Jimmy Thompson
— Sam Turner
Ronnie Stevens
— Drunk Passenger
Vincent Ball
— Jenkins
Cyril Chamberlain
— Tom Tree
Willoughby Goddard
— Large Man
Ed Devereaux
— Young Officer
Brian Rawlinson
— Nervous Steward
Anton Rodgers
— Young Man
Anthony Sagar
— Cook
Terence Frisby
— Passenger
Mario Fabrizi
— Second Cook
Marian Collins
— Bride
Jill Mai Meredith
— Shapely Miss
Alan Casley
— Sailor
Evan David
— Bridegroom
Joyce Adams
— Passenger (uncredited)
Del Baker
— Officer (uncredited)
Roy Beck
— Passenger (uncredited)
Joe Beckett
— Passenger (uncredited)
Hyma Beckley
— Passenger (uncredited)
Roberto Cardinali
— Dr. Arthur Binn (singing voice) (uncredited)
Pauline Chamberlain
— Passenger (uncredited)
Norman Coburn
— Wireless Operator (uncredited)