Factual error: Regarding the church service on the Titanic, it was non-sectarian, however it was based on the Anglican Church in England (or Episcopal in America). The fact is that Captains did conduct the service, were open to anyone; thus Jack could not have been kept out. (01:12:05)
Suggested correction: On the real Titanic, 1st, 2nd, and 3rd classes were strictly segregated, not to mention the social attitudes of the era. Hence, no steerage passenger (e.g. Jack Dawson) would have been allowed onto First-class spaces. Furthermore, in real life, there was no single church service open to all on that day - Second class had their own service in their dining room (i.e., separate from First class).
Then, how did Jack get to go to dinner with the first-class passengers?
He was invited for saving Rose's life. (I haven't seen the scene in years, but I think Rose invites him.) Molly Brown then gets him some clothes. (I believe she mentions that he is her son's size.) Otherwise, he would not have been allowed in 1st class.
Factual error: When the captain declares to Bruce Ismay that the last boilers have been lighted, it's only half true. Sunday morning, the last "regular" boilers were lighted to reach a total of 24 out of 29. The five boilers of the auxiliary boiler room number one are not in operation yet. The day after, weather permitting, it was planned to light them on for a few hours to see if the Titanic had something in the ball. (01:13:00)
Suggested correction: He doesn't say that to Ismay. Ismay says, "I see you haven't lit the last four boilers," and Smith replies, "I don't see the need. We are making excellent time."
Factual error: In the famous "I'm flying" Scene, the sunset is to the couple's left. But at that time (April 14) the ship was definitely steaming due West, and the sunset should therefore have been directly in front (or even a bit front-right). (01:17:00)
Factual error: During the drawing scene, 'Jack' is using modern square sided, pressed charcoal with numbers embossed in the side of it. In 1912, Jack would have been using vine charcoal which was round and made of 'charcoalized' willow twigs. (01:23:30)
Factual error: When 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, and the boiler workers were called the "black gang" due to what happened as a result of working there. Yet Rose was wearing a pale 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, at least on her shoes and the hem of her dress. (01:28:00)
Factual error: When Jack and Rose are running through the boiler room not only is there no door between boiler room 6 and the cars but the cars were kept two decks higher, and there was a shaft between them. (01:29:30)
Factual error: When the men are checking the store room for Rose and Jack, the men are using huge battery powered bright white flash lights that look like they're from Jurassic Park. Back then they would have produced yellow light. The light used in the movie was a Short-Arc Xenon bulb, you can tell this by both the very high color temperature of the light and the center of the light has a "hole" in it where the actual tube is blocking the beam. Such technology was not around at that time. (01:33:15)
Factual error: When the ship hits the iceberg and the plates of the hull start to buckle and break apart, it shows a scene on the inside of the ship showing the walls buckling in, along those walls you can see vertical pipes that appear to made of PVC, similar to the pipes used for sewage drains in modern building structure. I don't think PVC was around in 1912, the pipes would have been made of cast iron or lead and they would not have been white. (01:37:00)
Factual error: 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. (01:45:25)
Factual error: The radio system in use at that time was based on spark transmission and we should never have heard a nice clean transmission of Morse code SOS or CQD beeps. (01:45:25)
Factual error: When Jack is handcuffed to the pipe below decks, the elbow joint is a modern welded joint, not a bolted flange joint as in the rest of the ship. I'm sure this was done to allow Jack to move about with greater ease as the water level rose. (01:47:50)
Factual error: Jack (Leonardo DiCaprio) was handcuffed with old English Hiatt's Darby Handcuffs (type 104). This is historically correct. But the key for these handcuffs identifies them as modern reproductions, because it had a flat top and was "checkered". The old keys had an oval and smooth (only marked with "Hiatt" and a number) top. The handcuffs used in the film were not from 1912. (01:47:50)
Factual error: The Master-at-Arms office, where Jack is handcuffed, was in actuality an inside cabin and had no portholes at all. (01:51:10)
Suggested correction: I checked the plans. It's an outside cabin.
It's an inside cabin per the deck plans. Https://www.encyclopedia-titanica.org/titanic-deckplans/e-deck.html.
Factual error: Rose turned left after exiting the elevator during the search for Jack during the sinking. In the real Titanic, there was a wall to the left of the elevator in E Deck. In addition, going left from the elevators would take her to the port side of the ship, but the corridor outside the cabin where Jack is is on the starboard side. (01:53:40)
Suggested correction: Coming out of the elevator, you turned left to have access to the long corridor called Scotland Road.
Factual error: Rose takes the elevator down to rescue Jack. When the operator goes back up, the elevator moves when the gates are still open. In reality, the gates had to be closed before the elevator car could move. (01:54:00)
Factual error: When Rose is trying to save Jack when he was handcuffed, she walks through a crew passage by the first class elevators on E-Deck. However this crew passage did not exist when you check the deck plans. (01:54:40)
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)
Factual error: When Jack, and Rose were trying to escape the rising water they were trapped by a locked gate. Jack and the crowd pulled up a bolted down bench to use as a battering ram. When they pulled the bench loose they showed a close up of the wooden floor shattering. The wood was pressed fiber board which would never be used as ship decking, not to mention, pressed fiber board wasn't invented until decades later. (02:06:05)
Factual error: Those USA $20 bills that Caledon Hockley stuffs into the pocket of First Officer Murdoch are Federal Reserve Notes, which were first issued in 1914, two years after the Titanic sank. (02:07:20)
Factual error: When Rose, Jack and his friends come up to the boat deck while the ship is sinking, they ascend using the second class staircase and its exit on the deck. When Jack lets go of the door it is able to hit the side of the deckhouse. On the actual Titanic there were walls on the bow side of each door, which supported an overhang above the entrance. This is not included in many scenes in the movie. (02:08:05)
