Continuity: In the scene you see Rose going down stairs, before she goes into the water she rests an axe on the door frame which turns to the side, yet in the following shot it's not turned to its side.

Continuity: During the first meal on the Titanic (the one where Cal plucks Rose's cigarette from the holder) the stone on Rose's necklace changes between almost disappearing in her dress and about two inches above.

Revealing: When Rose and Jack first enter the boiler room, they run towards the right. If you look closely you can see the reflection of the worker in the back to the left in the mirror they use to make the bolier room look longer. In the next scene they are running in the opposite direction, because the set is so small due to the mirror, and once again you can see the same reflections caused by the mirror.

Revealing: In this scene, at the end of the film when Jack and Rose are hanging onto the railing, you can see the ship split in half, but when it drops, if you watch closely on the right side of the screen, you can see that the entire ship is still intact, the lifeboat cranes are visible all the way down the top of the ship.

Continuity: When Jack gets invited for dinner after Rose's rescue his hair changes between hanging down and tucked behind his ear alternatingly. There is another change after he puts Lovejoy's cigarette behind his ear. Similar alternating changes happen while he talks to Rose in the gym.

Continuity: When Cal gives Rose the diamond her front hair changes from shot to shot, most drastically when she says "good gracious."

Factual error: In the scene where Jack and his friend are standing on the bow looking at the dolphins swimming ahead of the ship, the dolphins are clearly Pacific white-sides, not any Atlantic species.

Audio problem: When the leader of the orchestra suggest to play "Orpheus", the music starts later than the musicians actually begin playing their instruments.

Continuity: When Jack and Rose have first met and are talking and walking on the promenade of the ship, in a wide shot of them, to the left of the screen stands a man with a hat in his hand talking to a lady. In the following shot his hat is on his head.

Continuity: When Jack is dining in first class with Cal Rose and the others, when the men get up to leave, and in one shot you see Cal walk past Jack, and in the following shot he is walking past again.

Revealing: When Tommy and Fabrizio meet Jack and Rose at the bottom of the staircase and try to look for a way out, you can see a boy in the bottom left corner staring at the camera and smiling.

Revealing: If you look at the deck planks to the right of Rose and Jack you can see that there is something that runs perpendicular to the rest of the planks. This wasn't on the real Titanic. This is where the set was "cut" so that the front half could be sunk into the tank later on in the film.

Continuity: When the diamond is found in Jack's pocket the way Rose's hair is messed up is different in every single shot.

Continuity: In the scene close to the end, we see crewmen of the ship pulling down a lifeboat, if you watch closely the plank that passengers sit on breaks off when falling onto the deck, but in the following scene it has repaired itself and is back on the lifeboat.

Continuity: When Jack and Rose are on the way up to the end of the ship, they go past a priest with lots of people praying, some are holding his hands, yet in the following shot, the people are not holding his hands, and are a bit further away from him than in the previous shot.

Factual error: All deep sea submersibles that travel to depths of two or three miles fall to the ocean floor with no power on. At the start of the film, you see MIR1 and MIR2 pan past the camera with all their lights on. The lights should be off to conserve electrical power. The journey to the sea bed takes two and a half hours.

Continuity: During the break-up of the ship, David Warner's character, Lovejoy, is right where the gash starts. Right after we see the interior break-up shot, we see the hull breaking, and on the top, where Lovejoy should be, he is nowhere to be seen.

Factual error: When Titanic is leaving Southampton she accelerates in few seconds to a incredible fast speed. That was impossible then, when large steamers were helped off by tiny tugboats. In the long shot in fact, you can see the tugboats - no way she could accelerate that fast if being towed.

Continuity: Professional Radio Operators hold the key used for Morse code between their thumb and two fingers - they don't tap it, as was shown. Tapping would produce a harsh voice in Morse code.

Continuity: In the scene where Jack is showing Rose how to spit and is interrupted by the arrival of her mother, the glob of spit on his face moves from the side to the middle.