Corrected entry: Jack hoists Rose up onto the railing at the front of the boat, and they stand there for several minutes. Having been at the front of a boat in San Francisco, I can say that the Jack and Rose would have been blown back and unable to stay on the railing due to the speed of the ship. Instead of a small breeze in Rose's hair, the wind would have been pushing them backwards.
Corrected entry: Rose is battered by a torrent of oncoming water, pulled up over a sinking ship which is almost vertical and sucked underwater for about a minute fighting a powerful suction pull, yet the heart of the ocean remains in her pocket and she only discovers this little extra weight after the sinking.
Corrected entry: In the scene where Jack is handcuffed to the pipe below decks, the first shot shows the window totally submerged at least 5 feet underwater and Jack looking through the window. In the next shot, you see the top of the water through the window. This could not be possible since the ship is sinking.
Corrected entry: One of the misconceptions about the upper class and steerage passengers is that they were separated solely due to class reasons. First and I believe second class passengers had medical certificates that say they were free of disease, so they didn't have to pass through any kind of port check when they landed. One way of guaranteeing this was to keep them totally separated. This was common practice on the ocean liners of the time. Jack's being able to get into first class wasn't just improbable it was potentially dangerous.
Corrected entry: Anyone who's ever been on a boat knows how dangerous it is to have a bigger boat floating nearby - it produces huge waves that make the little boat tilt and many times turn over. Now what kind of waves would such a huge ship as Titanic produce!? However, at the beginning of the movie, when Titanic is leaving the port, there is a fishing boat nearby with a fisherman in it - and nothing even moves. (00:26:55)
Corrected entry: Near the beginning of the film, when the guy is showing old Rose the sinking simulation, it doesn't match what he's saying. In one place in particular, the lights switch off, then it cuts to an wide shot (you see the computer screen) and the lights go out again. This happens through-out the simulation.
Corrected entry: When the ship is sinking, you see the propellers come out of the water. When they first do come out, they are in one position. Howver, when the ship splits in half, the propellers are in a completely different position, and they couldn't have turned by themselves.
Corrected entry: The first three funnels all fall down the wrong way. By looking at the twisted metal remnants of the smokestacks at their original positions, it can be told that the 1st fell forward, the 2nd fell to starboard, and the 3rd fell back into the tear in the ship. (02:35:50 - 02:41:50)
Corrected entry: Throughout the film, Cora, the little third class girl, and her father speak with massively different accents. She sounds American whilst he speaks in a more likely cockney English. This is most noticeable in the departure scene where he says to her: "It's a big boat, ain't it?" and she replies in a perfect American accent, "But Daddy, it's a ship." Surely she would speak with roughly a similar accent to her father?
Corrected entry: When water crashes through the dome why is it that water isn't pouring through the windows a deck lower? One hasn't even broken from water pressure because there isn't any water even touching it. A moment before when we saw the smokestack fall, one could see the encasing of the dome and the stairs' roof was submerging. The windows below must be broken and flooding when the water is crashing through the dome. (02:36:35)