"Titanic" is getting a 3D re-release next week - in the 15 years since it was first in cinemas (15 years?! I'm so old) a lot of eagle-eyed viewers have spotted well over 200 mistakes in it - here are 15 of the best...
When Jack and Fabrizio are at the bow, the anchor well below them is black. Along with that, the foremost railing is not connected with the rest. But when Rose and Jack are there the well is white and the railing connects. Plus during the "flying" sequence the gap between the vertical bits of the railing is different in different shots of the ship.
Look closely at the location of Rose's beauty-mark the first time you see her at the dock. It is on the opposite side of her face during the rest of the movie.
When Rose breaks Jack's handcuffs with an axe, it is obvious that she doesn't hit the handcuffs on the pipe but Jack's hand - the handcuffs come apart by themselves. The axe also bends.
Just as Titanic breaks apart, the compass platform (seen in front of the third funnel when the lights were still on) suddenly disappears. The water isn't even high enough to have reached its aft-most legs. The white projection on the deck that held the chandelier in the lounge is also gone, and the ventilator that sits on it is flush with the deck.
When Rose is trying to rescue Jack she spies a fire axe. Smashing all the glass out from the holder she grabs the axe and turns round. The next camera shot shows Rose standing in front of the case with almost all of its glass intact.
During one side shot of the ship sinking at night, the bow has clearly begun to slide under. There are several lines hanging off the side of the boat. The lines are perpendicular to the boat, not the water, indicating that the model was filmed when level and tilted digitally.
The pipe on the starboard side of the forward smokestack changes by the time the ship sinks. When Captain Smith tells Murdock to speed up the ship it bends at the top and creates a half circle. But when it is collapsing behind Cal, it has the shape of a "P."
When Jack is asking Rose to dance after dancing with the little girl "Cora", you will notice that Jack's hair is down when first asking her and when the camera goes to Rose and then back to Jack that it is back up with, all nice and neat.
When Rose breaks Jack's handcuffs, you can see the stunt person not wearing suspenders as Jack does. This is an inter cut shot between the raising of the axe and the striking of the cuffs. Leonardo's stunt double is noticeable in other shots throughout the film.
Close to the beginning of the film when Rose is looking through Jack's drawings, a man walks by with a long black coat down to his ankles, in the following shot you see the same man walk past only this time the coat is just below the waist and a different colour from the previous shot.
When Jack and Rose are going down with the ship, there is a man holding onto the flagpole. The man's life jacket disappears and reappears.
When Jack comes to the first class door for the first time in his tux, you can see a cameraman in the glass door before he enters.
When the ship tilts to a vertical position, you see people falling and hitting objects on the deck. In a close up of that, you can see that a black and bronze-topped capstan has wrinkles in it and bends when someone hits it.