Character mistake: In the beginning of the movie, Chrissy goes swimming on the night of July 1. Her remains were found the next morning on July 2. The police report that Brody types up states that the incident happened at 11:50 p.m. On July 1 and that Chrissy's remains were found at 10:20 p.m. On July 2 and not in the a.m. As the movie shows. Also on the police report, it states that Chrissy was removed to the "CORNERS OFFICE" and not the coroner's office. (00:09:30)
Character mistake: When Quint is telling the story of the Indianapolis, he says the ship went down on June 29th. It actually went down at 12:14 a.m. on July 30. (01:32:45)
Character mistake: During one of the shark scares at the beach, Chief Brody is running along the shoreline telling everyone to get out of the water. There are several frames where the Chief and a man with a moustache are at the water's edge. If you look closely you will notice that the man is smiling and laughing and other people laugh as well. (00:17:30)
Character mistake: When Brody waves at his wife Ellen she says "I've got Shawn." In the next shot he's running after his brother Michael going to the pond, so she has not got him at all. (00:57:50)
Character mistake: Captain Quint tells Hooper and Brody that the USS Indianapolis delivered "the Hiroshima bomb" in 1945. This is a myth that has persisted for decades and right up to the present. To prevent it from being lost in one piece, the Hiroshima bomb was actually delivered in pieces by various means to Tinian Island, where the parts were reassembled before it was carried aboard the Enola Gay to its target in Japan. The USS Indianapolis delivered only the detonator for the bomb. (01:29:00)
Suggested correction: This isn't a mistake since even you say it is a commonly believed and spoken of myth, so how is the captain repeating a commonly held myth a movie mistake? That would be like calling it a movie mistake if the character of King Arthur said the world was flat.
I agree with Jason, that it was correct for the character of Quint to have truly believed it. This was submitted as a "character mistake" which is appropriate. According to MM's guidelines a character mistake is "something a character wrongly states as fact... Something more significant than a minor error anyone could make."
Suggested correction: Quint likely believed the ship carried the bomb. It's unlikely he would know the details of an intricate plan to deliver the pieces separately. It may not have been factually correct, but it was correct for the character to have believed it.
Character mistake: When Chief Brody is talking to Mayor Vaughn on the ferry, before he says "I appreciate it I'm just reacting to what I was told" he calls him "Harry" when his real name is Larry. (00:13:10)
Character mistake: When Hopper is in the cage you can tell it isn't him by the size of the scuba tank on his back and size of that kill stick he was going to use. The tank and kill stick are almost as tall as the person in the cage. When on deck and loading into cage in scene before that the items aren't that tall.
Character mistake: In the scene on the boat, when Quinn, Hooper and Brody are gathered below, Quinn gives the date about the USS Indianapolis sinking as June 29, 1945. It is actually July 29, 1945. The first atomic bomb wasn't actually detonated until July16, 1945 in Alamogordo, New Mexico making it impossible for the Indianapolis to be delivering the bomb in June.
Character mistake: Chief Brody and Hooper go to the wharf to dissect a large tiger shark and examine the contents of its stomach. Finding nothing unusual, Hooper recommends they go offshore that night to search for the real killer shark because "he's a night feeder." Coming from a marine biologist, that remark really makes no sense. Hooper knew that, in addition to eating Chrissie the midnight swimmer, the shark also ate Pippin (the black Labrador retriever) and the Kintner boy in the middle of the day at a public beach. Based on all available evidence, the shark was no more likely to feed at night than in broad daylight.
Suggested correction: The statement is correct, the shark was a night feeder, as opposed to just being a day feeder, meaning the shark will likely be hunting at night.
Again, given all the evidence (including the daytime attacks), Hooper had no more reason to suspect the shark was a night feeder than a day feeder.
Except that's not what the conversation was about, he wasn't speculating on whether the shark was more likely to attack during the day or the night. He simply states they should go out at night to find the real shark responsible for the attacks because that shark will be feeding at night as well (and by going out at night they wouldn't have to face the daytime crowd). If he made an statement such as "the shark isn't a day feeder" or "the shark is strictly a night feeder", those statements could be considered mistakes.
Even when Chrissie was killed at night and two men later on in the movie tried to catch the shark for the reward...at night?