(at around 11 mins) 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).
(at around 43 mins) The black and white musical film shown on the death ship is Everything Is Rhythm (1936).
(at around 12 mins) As the ghost ship collided 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.
The make and model of the derelict mysterious black Flying Dutchman-like "Death Ship" was a deserted German World War II freighter, which had once been a Kriegsmarine prison ship used for torturing.