Continuity mistake: During the capsizing, the piano crushes two passengers against a wall. When the piano falls to the ceiling/floor, you can see the same two people fall, but are very much conscious/alive.
Continuity mistake: At the end of the capsizing, Terry falls from the table into the ceiling light, and there are people standing around, clutching each other, which shouldn't be because they wouldn't have had time to recover. When the emergency lights come on, everybody is strewn and about to recover, nobody is standing clutching each other.
Other mistake: There was no way the dining room could have filled up with that much water in that amount of time.
Other mistake: In the scenes bookending the underwater swim, there is no way to figure out how both pools of water are set up. Sometimes a cast member jumps in and appears to be standing in 3 feet of water and other times cast members dive in as though the water is 25 feet deep. In fact, the whole underwater scene makes no sense at all. Cast members swim up meaning they're going through a hatch in the ceiling or floor, there are railings attached willy-nilly and there appears to be no regular doors anywhere.sexxypeety
Continuity mistake: In the scene where they start going through the pipe and end up in the funnel thing Gene Hackman takes off the pipe cover and leans it against the wall. After everybody gets into the funnel it shows the water lapping at the pipe. In the background you see the cover is leaning against the pipe, not the wall.
Revealing mistake: When the ship is upside-down and they're trying to get Susan down from the table, you can see that the table really isn't attached to the ceiling. You can see the center pool split into legs that are supposed to be connected to the floor, but when Susan moves around and shakes the table, the legs shake and you can see space between them and the floor. Even if the other legs outside of the shot were connected, the table would be leaning under Susan's weight.
Continuity mistake: Just before Shelley Winters tries to persuade the others she should be first to swim the underwater corridor to the engine room because she used to be an underwater swimming champion, watch closely what she is doing with her hands in each shot before she speaks. In one shot she is fondling the medallion hanging on a chain around her neck; in cutaway shots you can see the medallion is hanging free and her hands are nowhere near it.
Continuity mistake: When Gene Hackman shakes the metal doors that lead to the shaft, in a close-up he unlatches the small latch holding the doors together. After a cut showing some water filling up the passageway, it cuts back to the shaft where the metal doors are shaking, but the hook is now latched again. (01:04:15)
Continuity mistake: When Manny leaves Belle behind to join the others in the propeller shaft, a crew member is lying 'dead' behind him. As Manny passes him, you can see the crew member move his arm, possibly to get it away from the fire below him.
Visible crew/equipment: During the dining room scene when everyone is eating. Look for the shot where Shelly Winters reaches over to Manny's plate, in the background you can see a boom mike.
Plot hole: Shortly after the ship flips over, the steward, Acres, is asked why lights are on. He explains they are emergency lights that will last three hours. The lights are left on throughout the movie, but when they get out it is bright daylight. Considering the ship flipped at midnight, there is nowhere on any ocean where it gets light at 3:00 in the morning.beaverisl