The RMS "Titanic" was one of the first shots ILM completed; they wanted a powerful image for the scene and considered using the "Hindenburg" airship complete with flaming passengers and luggage, a subway train carrying rotting passengers, and a graveyard with exploding headstones. A miniature model of the "Titanic" with slightly modified aspects; the position of the ship's name was altered to make it clearly identifiable. Extras were filmed wearing period costume, seaweed, and dripping water but many of the minor details were lost in the wide shot. A scale model of the museum was created because Reitman wanted to be able to show the slime oozing from cracks and seams. Several last-minute effect shots were added due to the hectic schedule. The ghost train was intended to be a subway car but there was no time to find a suitable model and an antique train was used. The severed heads were sourced from multiple places; poorer quality heads were placed further away from the camera. The theater ghost took three weeks to build and required four puppeteers. The Washington Square monster was animated in stop motion by Phil Tippett, who accepted the job on the condition that the effect was no longer than 160 frames, was built on an existing model, and could be done in one take. Tippett was seriously injured in a car accident during development but continued to work and finished his effect in time. The slime-possessed fur coat was achieved using four coats with parts controlled with servo motors. ILM considered using live animals for the segment but abandoned the idea.