- The ship used by the filmmakers was the S.S. Ile de France, the famous French liner which cruised the Atlantic from 1926 to 1959. She was leased for $4,000 a day. After shooting completed, she was re-floated (having been partially sunk for the film) and was towed to the scrap yard.
- According to maritime historian William J. Miller, the famed French Line was so horrified that their former flagship would be used in such a way that they demanded that the Ile de France's name be removed from the ship's bow and that in no way would any references be made to the French Line.
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