The engineers put water into the boiler, which isn't a good idea when the ship is sinking.
Angelica's green gloves disappear in one shot, then reappear in the next shot.
After the nanny is told "Come on miss, you're the last one on this boat" she replies "Rubbish, we're in the middle of the ocean." Considering the situation, it makes no sense at all.
The music band on the Titanic never had a female singer, it was only a pure instrumental band.
The sinking occurs out of order. The first funnel fell, not the 4th. When William jumps from the deck with the boy, the ship is breaking in two. When he surfaces, the back of a ship that says "Titanic Liverpool" is going under. Later, he gets his foot stuck on a rope on a handrail of the submerged stern. In the next shot, the ship is breaking in two again, then the propellers crash down on the water, and the ship correctly performs her final plunge. The flashback at the beginning shows the sinking sequence in order.
William breaks through a window with a chair to escape below deck, when a nearby opening would let him escape.
As the ship is about to cast off, a crew member expands in height as he runs.
In the movie smokes comes out of the fourth tunnel of the Titanic. However it was actually a fake funnel, only used as a ventilation system for the ship's kitchen.
At first, the life boat looks like it's levitating down to the ocean. Lowering cables appear in the next shot.
The dolphins pull the chef and animal's crates, without ropes.
When Maxie is pulling faces at Angelica's family, Hortense screams. A second later when Bernice is bouncing across the screen, Hortense's legs can clearly be seen. Hortense then screams again and then faints.
Some of the passengers who appear to be walking aren't moving, but staying in place.