When the crew of the ocean liner picks up the echo of the approaching ghost ship on their radar, the close-up of the ship's radar imagery is a reverse-image video clip of the fog-covered "Skull Island" taken from King Kong (1976).
As the Death Ship collides with the cruise liner, brief scenes of an explosion, a grand piano falling between decks, and the engine room flooding were cut in. These scenes were from The Last Voyage (1960).
The footage showing the movement of the Death Ship was the result of filming from a small boat moving around it. The crew shot for about an hour before the Death Ship broke down. The rest of the required shots were achieved by faking movement, as the broken down vessel was anchored and stationary.
When first looking in the bathroom there is a pin-up photo on the wall. The photo is of actress Betty Grable.