Continuity: When the camera pulls back through the pub window to reveal the card players, if you look carefully in the background you will see a Steam Engine on the dock. Unfortunately the computer generated loco is clearly American as it has two domes, something NEVER seen on British locos. It also is shunting what looks like a carriage - again, this is also American. Carriages were rarely seen at docks, except if a train was connecting to a ship, and this was not common until the 1920s. 

Continuity: When Cal is shooting at Jack and Rose, he leans over the rail and when he shoots the angle at which he's shooting is different from where the water shoots up when the bullet hits the water.

Continuity: The day after Jack saved Rose's life, they are walking by the upper deck, and you can see the shadows of the smoke that came out of the smokestacks over them and the ship. However, in the next shot, you can see the shadows have totally disappeared, and in the next shot they reappear, but much more faintly. Also it would be technically impossible for the shadows to be over Jack and Rose, due that the sun is coming at the LEFT side of Jack & Rose, so the smoke shadows should have been at the other side of the ship and not over them.

Revealing: Just after the Titanic has sunk, and all the people are thrashing around in the water; look towards the top of the screen as the camera pulls back, and you can see the back of the tank it was filmed in. It shows as a clear line against the background.

Continuity: In the scene on deck where Jack is teaching Kate to spit, for a split second you can see the breakers rolling in to shore through the ship's railing. Also in this scene, the angle of the shadows changes constantly, indicating the scene was shot several times throughout the afternoon and then spliced together.

Factual error: A small one & probably only noticed by dog trainers like me.  When the dogs are being brought on board, they are on leather leashes made by J&J Dog Supplies, invented in the 1970s.  It is the type of leash preferred by professional trainers, who probably supplied the dogs for the movie, and is distinguished by the "braid" near the snap, rather than by a sewn or riveted section.  J&J's website is: www.jandjdog.com.  You can see the leashes there.

Continuity: In the scene where Rose is about to jump off of the ship, she gets to the end of the ship, and she climbs over the railing. At one point she's holding on to the black part of her dress, and it goes onto the long shot and she isn't, then close up she is again and so on and so on.

Revealing: In the scene where Jack and Rose are being chased by the bodyguard, they run through the ship's boiler room, prior to winding up in the car. Titanic was fueled by coal - the boiler workers were called the "black gang" due to what happened as a result of working there. Yet Rose was wearing a white dress which stayed pristine after going through the area, as did her shoes. She should have picked up at least a LITTLE soot along the way.

Continuity: As Rose walks down the end of the ship before attempting suicide, a row of benches is visible behind two yellow bolts on the deck. However later in the film, as Titanic is about to go under, Jack tells Rose to "Kick for the surface and keep kicking." Then in the next shot as the ship sinks further, the benches are now in front of the yellow bolts- evidently further than they previously were.

Factual error: In the scene where DiCaprio is showing off his sketchbook, there is one with a man's hands around a young girl's torso with his hands on hers. This drawing is an exact replica of a photograph by celebrated photographer Sally Mann called "Rodney Plogger at 6:01, 1989." Most likely a tribute of some sort by the director to a fellow artist, but obviously this drawing is out of place in 1912. [From the New York Times Arts and Leisure section, Sunday, November 19, 2000: "The film director James Cameron copied an image from "Immediate Family" and displayed it prominently in "Titanic" without Ms. Mann's  permission. The resulting grievance was settled out of court for a substantial sum just weeks before the Academy Awards."]

Continuity: Rose is wearing low heeled laced shoes throughout the entirety of the sinking scenes. Jack helps her jump off a small deck in order to flee for the lifeboats (she's wearing her lifejacket at this point). In this scene, Rose is suddenly wearing flat moccasin-type shoes of similar bone colour. Shoes then revert back to low heeled lace-ups after small jump assisted by Jack takes place.

Continuity: The design of the ship's bow changes significantly while at sea. The white form on top of the bow used for mooring first does, then doesn't have an indentation on top, possibly with a bolt in the center. The point where the curved railing meets the straight side railings either is or is not connected by a top horizontal bar, and the gap between the vertical posts changes size. Another mistake on this site mentions the anchor design change, but also the metal walkway is made of tubular metal bars -or- flat bars that are more numerous and closer together.

Revealing: When Jack shouts he is king of the world, the shadows at the bow of the ship (where Jack and Fabrizio are standing) are shorter and point to the right. On much of the rest of the ship, they are longer and the angle is very different, pointing closer to the stern.

Continuity: In the scene where Jack and Rose are on the third class level partying with the other people in third class. When Jack hands Rose a glass of beer, how she holds the glass differs between shots.

Revealing: As the ship is breaking apart, you can see the wires that pull people into the tear on the deck.

Continuity: 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.

Continuity: Rose walks through the chest-deep water with the axe, holding it vertically when seen from behind and horizontally when seen from the front.

Continuity: Early into Rose's suicide attempt scene Jack's hair tucks itself behind his ears while his hands are in his pockets.

Continuity: When Rose leaves Jack to find help, she runs and wades through water that, at times, is above her waist. However, when she is seen from the back after going up a staircase, the water level on her coat changes a few times and in one shot the coat shows no water line at all but is completely dry.

Continuity: In the scene where Rose is introducing Jack to the first class passengers, they (Jack, Rose and Molly) start walking towards the dining area. Cal turns around, and says "Sweet Pea", obviously calling for Rose. When it does this, you can see Rose, Jack and Molly facing another direction, still talking to J.J Astor. Next shot, they're facing Cal again, on their way to dinner.