Other mistake: When Jack draws Rose the hand that is shown in close-up is much too old to be his. [It's James Cameron's hand - still a mistake, but there's why.] (01:23:40)
Revealing mistake: In the exact moment when Cal steps out of the car just after the beginning of the movie, you can see behind him the back of Titanic still incomplete, with the internal structure totally visible. (00:22:06)
Factual error: At the end of the movie, the Straus' are seen lying in each other's arms on their bed with water coming into the cabin under the closed door as the ship is sinking. This is not true, their cabin was on C deck, but his body was found in the following days of the sinking. For his body to get into the open water it would have had to float through a closed door, and up several flights of stairs. Historically, they refused to leave the ship, and were last seen sitting in deck chairs. They were there when the ship sank on the boat deck. Her body was never recovered.
Continuity mistake: When Jack is teaching Rose how to spit, then gets caught by some ladies, he has a glob of spit on the far upper right side of his chin, then the shot switches and it is now on bottom middle and a little to the left of his chin. (00:52:25)
Suggested correction: The glob doesn't move from the right side to the left side.
Revealing mistake: In the engine room as the ship is sinking, the smoke and steam coming from the machinery rises at the same angle as the ship, about 45 degrees. So, the shot was filmed level, then tilted afterwards. (02:40:40)
Continuity mistake: After Rose has been persuaded to step into the lifeboat the camera is on Cal and Jack for quite some time when Cal reveals to Jack that there is no arrangement in his benefit. During all this time the lifeboat is being lowered, but when the camera cuts back to Rose she can still make eye contact with Jack almost at level. (02:12:50)
Revealing mistake: Right as the Titanic hits the iceberg it does an underwater shot of half the ship. If you look closely, it really is only that half of the ship. The 3/4 size model they built was only half a ship, and they clearly didn't frame the shot right. (01:36:40)
Continuity mistake: When Rose, Cal and the others sit around a table talking and drinking, and Mr Ismay says something. His hands are locked together by his fingers, but in the following wide shot his left hand is down by his knee and his right is holding a fork with food on it. Also, Rose puts the cigarette holder to her mouth and takes her left hand away from it but in the following shot her left hand is still on it. (00:32:30)
Continuity mistake: Right after the 1st smokestack has fallen and crushed Fabrizio, it is seen from above creating huge sprays of water. The problem is that the smokestack looks nothing like the Titanic's. You can see the top and there is no black whatsoever. And to make it stranger, there is a cable attached to it and then one below it, both on the peach/orange color, and not the black. (02:36:10)
Factual error: In the shots taken in the grand staircase, the lights on the ceiling are flush with the ceiling itself. The lights in the actual Titanic's grand staircase were mounted via a small pedestal. Earlier in the film when the submarine is exploring the grand staircase, there is a shot of one of these same lights except this light actually has the original pedestal. (01:57:05)
Continuity mistake: When Rose attempts suicide she is holding onto the railing while standing on the outside. In some shots the black lace from her dress is held under her left hand, in some it isn't. (00:37:40)
Revealing mistake: In the suicide attempt scene, after Rose climbs over the railing, you can notice banding of the night sky a couple of times - that appears on both VCR and DVD. (00:37:15)
Continuity mistake: The length of Rose's fingernails changes noticeably throughout the film. In some scenes, her nails are very short (during the "flying" scene), and in other scenes her nails are a lot longer (when she takes the comb out of her hair right before Jack sketches her). (01:18:40 - 01:21:20)
Revealing mistake: Notice the land in the background of the ship which is supposed to be in the middle of the North Atlantic. It is in one of the whole shots of the boat which has Brock and his team on it. (00:08:30)
Continuity mistake: At the beginning when Jack and Fabrizio go to the front of the ship, you can see the anchor section at the front, yet when Jack is waiting for Rose, the camera pans up, and its a completely different design, than from the first look at the beginning. (00:30:10 - 01:17:10)
Continuity mistake: When the funnel tips over it breaks at the bottom. The camera cuts to Cal, then back to the funnel, and it breaks again. (02:30:00)
Audio problem: After Jack asks Rose "do you love the guy or not?" the camera shows him from behind, and he is moving his jaw as if he is asking the question again. (00:47:30)
Continuity mistake: When Cal confronts Rose and Jack at the last lifeboat, once in a while when the camera is only on Cal, it looks like it is raining lightly, however, it is dry in all other shots facing others. (02:16:40)
Revealing mistake: When Jack opens the gate after he retrieved the key from under the water we see that the water level in the background is lower, but the flow is towards the camera. It looks as if the shot has been reversed. (02:19:40)
Continuity mistake: When Jack is waiting for Rose at the staircase (before dinner) he is mimicking the hand gestures of an older gentleman. As Cal and Ruth walk down the stairs, we see a shot of Jack from behind, and his arms are at his sides. In the next shot when Cal goes to greet the Countess, Jacks posture is back to the mimicking of the older gentleman. (00:55:40)
Suggested correction: Yes that's a fact but this is a movie and if James Cameron would've taken the time to make this movie with everything as a fact it would've taken forever. Just like Rose wasn't a real person on the actual Titanic. Things like that.