- Frank Sinatra
- Mark Brittain
- Virna Lisi
- Rosa Lucchesi
- Anthony Franciosa
- Vic Rossiter
- Richard Conte
- Tony Moreno
- Alf Kjellin
- Eric Lauffnauer
- Errol John
- Linc Langley
- Murray Matheson
- Captain
- Reginald Denny
- Master-at-Arms
- John Warburton
- Bank Manager
- Lester Matthews
- Doctor
- Val Avery
- Trench
- Gilchrist Stuart
- Officer #1
- Ronald Long
- Officer #2
- Leslie Bradley
- Officer #3
- Arthur Gould-Porter
- Officer #4
- Frank Baker
- Ship Passenger
- Alan Baxter
- Larry - Crewman
- Laurence Conroy
- Junior Officer Mister Conroy
- Walt Davis
- Chef
- Douglas Deane
- Assistant Purser
- Noel Drayton
- Elevator Operator
- Bob Hoy
- Coast Guard Officer
- Ray Kellogg
- Skipper
- Donald Lawton
- Chief Radio Operator
- Barbara Morrison
- Woman with the Diamond
- Jack Raine
- Bartender
- Leoda Richards
- Ship Passenger
- Robert Shawley
- Chief Radio Operator
