Continuity mistake: When the Captain tells the morse operator to make an emergency call, the position of the papers and pencils in front of him move around between shots. (01:44:50)
Continuity mistake: Ruth walks to the ship, followed by Rose and Cal. When she is about to enter, the angle cuts and suddenly several women with dogs haven taken her place, followed by a lady who looks nothing like Ruth. Then in the following close-angle the group is meters behind from where they first were, repeating the walk towards the door. (00:22:15)
Continuity mistake: When Lovejoy and Jack are talking, Jack tucks his cigarette in his ear in an 11 o'clock position. A shot later it's in a 9 o'clock position and a bit of hair is covering his ear.
Continuity mistake: When Jack and Rose are in the lower hallway after escaping from Cal, Titanic is already at a major tilt with the bow completely underwater and the first class dining saloon getting flooded. The problem is that the water in the hallway is completely level and the water that floods is also level. With the ship tilted the way it is the water should have been collecting at the end of one of the hallways, not flat.
Continuity mistake: The first chimney fell in the scene where Fabrizio died, but later when showing the Titanic sinking, the uppermost part of the chimney is visible, intact. (02:40:30 - 02:41:15)
Continuity mistake: On the night of Rose's attempted suicide, we see her with a necklace on at the meal which disappears when she reaches the end of the ship. There was a deleted scene showing her removing it in her room, but without that it just vanishes. (00:35:00)
Continuity mistake: The way the necklace is held after it is found in Jack's pocket changes instantly. In one shot the steward is gripping the chain. In the next, the chain is draped over his fingers. (01:41:10)
Continuity mistake: When Jack and Rose are running from Lovejoy, they stop for a moment on E deck. When they do, look behind them and a member of the ship's crew comes into shot holding a bag of something. When Jack and Rose start running again, this man has disappeared. (01:28:20)
Continuity mistake: When Rose is talking to Mr Andrews about the lifeboats, her bag changes hands instantly. (01:13:10)
Continuity mistake: In the film, Titanic has a yellow stripe down from the bow to the stern, however the yellow stripe disappears from the film in some scenes, and appears in others. The main one is the sinking. (01:59:55)
Continuity mistake: Just after Rose leaves Cal, we get an underwater shot panning down on Jack, showing that the window he's standing next to is fully submerged. However, interior shots after that show air around the upper edge of it. It's not trapped air: it's constantly bouncing around, in a wave-like pattern. (01:53:10)
Continuity mistake: In the "You jump, I jump" scene with Jack and Cal persuading Rose to get on a lifeboat, Rose embarks the lifeboat at the front, port(left side) side of deck top. Yet when Rose jumps back on the ship, she climbs back on in the middle, starboard(right side) of A deck where the windows change, running towards the bow to the Grand Staircase; while Jack is running towards the Stern from the Port front side of deck top. Jack enters the Grand Staircase from the port side of Deck top, and Rose enters the Grand Staircase from the port side of A Deck. (02:11:40)
Continuity mistake: When Rose leaves Jack's company to retrieve help, and goes to return with the axe, she stops at the stairway with the rising water and wedges the axe on the bars. The camera cuts to behind Rose to show her removing her outerwear, and the axe is still being held up by the bars but it's nice and straight, before and after this camera shot, the axe is propped in the bars crooked at an angle. (02:00:05)
Continuity mistake: Rose steps out of the car, sees the Titanic and says "It's as big as the Mauretania" while she holds her hat. A frame later, from a different angle, her arm is down. (00:21:00)
Continuity mistake: At the beginning of the film when Cal sees Rose putting her paintings up, if you watch closely in the background, in one shot Cal walks into the room with his glass at his side, in the following shot it is at stomach level. (00:27:50)
Continuity mistake: When Jack is about to start drawing Rose, the shot cuts back and forth from a close-up to a wider shot. In the wide shots Jack is holding his charcoal pencil, in the close-ups he is not holding it. (01:23:10)
Continuity mistake: The drawing of Rose by Jack which Cal finds in the safe changes when the divers later find it in the wreck.
Suggested correction: Actually it does not. Comparing side by side the pictures they are identical. The actual picture seen (drawn by James Cameron) was sold at auction in 2011.
Continuity mistake: When Jack and Rose are running through the dining room, both of them are completely dry and running up. After Cal tells Lovejoy he'll give him the diamond if he gets it back, we cut back to Jack and Rose and both of them are soaking wet, most noticeably Jack. (02:13:15)
Continuity mistake: While with Fabrizio on the front of the boat, Jack's hair moves wildly, yet a frame later, from a different angle it's still. (00:29:50)
Continuity mistake: After handcuffing Jack, Lovejoy says the initials on his coat and Jack turns to Rose. A frame later, from a different angle, he is looking away. (01:41:35)