The script of the film is different from that of the final film. It was originally a psychological horror film. It tells the story of the four members of the rescue team becoming hostile to each other after boarding the missing ship and getting into trouble.
The ghost ship "Antonia Graça" in the film was designed based on the shipwrecked Italian luxury passenger ship "Andrea Doria". In July 1956, the "Andrea Doria" sank after colliding with a Swedish cargo ship. The photo of the rescue of the sinking ship in the film is the real photo of the ship when it died.
Brian Cox was the first candidate to play Captain Sean.
The captain of the ghost ship told Sean that the "Antonia Glaser" was suddenly miserable for rescuing the "Grelai". "Grelai" is a banshee in German folklore, the ship and sailor seduced by her It's all inevitable.
