History AnachronismStew / PiratesOfTheCaribbeanAtWorldsEnd

* When Beckett sets the ''Dutchman'' to give no quarter in the maelstrom battle, he orders his officer to make semaphore signals to the other ship. This is done by an officer holding two flags in different positions, the modern way. However, the British Navy in the 18th century did this by hoisting sets of special flags on the masts of the ships, not by setting an officer on deck.

* Barbossa states that the incantation to release Calypso must be spoken "as if to a lover", referring to a romantic partner. Back then however "lover" meant "close friend" or "ally"; Barbossa would have been looking for the word "paramour".

* Directly after the battle between the ''Black Pearl'' and the ''Flying Dutchman'' near the end of the film, Barbossa says "Belay that, or we'll be a sitting duck!" in response to Jack's command. but the phrase "sitting duck" was not introduced until the early 1900s.

* Gibbs has a Toys/TeddyBear at the end. The incident with UsefulNotes/TheodoreRoosevelt and his bear took place in November 1902. The political cartoons of Clifford Berryman which were inspired by the incident started appearing that month. The toy bears inspired by the cartoon were introduced, simultaneously but independently, by Morris Michtom and Richard Steiff in 1903. Although it is possible that it was an improvised toy, resembled teddy bear.

* There is no record of any pirate communes working together as "Pirate Lords", to further elect their King. The real-life pirates only once gathered as something distantly resembling the Brethren Court, although it happened only once and was formally referred to as "Brethren of the Coast". The term "popular vote" used by Gibbs was used at the modern time of real-world democracy, which could not occur among traitorous pirates.
* Similarly, the Pirate Code was never a unified book of strict laws, which was lampshaded by Barbossa in the first film as "guidelines". Each pirate ship had their own Pirate Code depending on the captain of the ship, it usually consisted only of one page, it was not a huge Doorstopper shown in the movie.

* Gibbs has a Toys/TeddyBear at the end. The incident with UsefulNotes/TheodoreRoosevelt and his bear took place in November 1902. The political cartoons of Clifford Berryman which were inspired by the incident started appearing that month. The toy bears inspired by the cartoon were introduced, simultaneously but independently, by Morris Michtom and Richard Steiff in 1903.

* Directly after the battle between the ''Black Pearl'' and the ''Flying Dutchman'' near the end of the film, Barbarossa says "Belay that, or we'll be a sitting duck!" in response to Jack's command. but the phrase "sitting duck" was not introduced until the early 1900s.

* UsefulNotes/{{Singapore}} didn't exist at that time, it was founded in 1819. Before, it was a tiny fishing village called Temasek, though the name "Singapura"--"city of the lions"--was first given in the fourteenth century, and its inhabitants were Malay, not Chinese. Though it was found by an EITC official, Sir Stamford Raffles is nowhere near Cutler Beckett.

* UsefulNotes/{{Singapore}} didn't exist at that time, it was founded in 1819. Before, it was a tiny fishing village called Temasek, though the name "Singapura"--"city of the lions"--was first given in the fourteenth century, and its inhabitants were Malay, not Chinese.

* All the gallows have a style of the trap door was not used until 1813.

* There's a Toys/TeddyBear at the end. The incident with UsefulNotes/TheodoreRoosevelt and his bear took place in November 1902. The political cartoons of Clifford Berryman which were inspired by the incident started appearing that month. The toy bears inspired by the cartoon were introduced, simultaneously but independently, by Morris Michtom and Richard Steiff in 1903.

* UsefulNotes/{{Singapore}} didn't exist at that time, it was founded in 1819. Before, it was a tiny fishing village called Temasek, though the name "Singapura" - "city of the lions" - was first given in the fourteenth century, and its inhabitants were Malay, not Chinese.

* When Beckett sets the Dutchman to give no quarter in the maelstrom battle, he orders his officer to make semaphore signals to the other ship. This is done by an officer holding two flags in different positions, the modern way. However, the British Navy in the 18th century did this by hoisting sets of special flags on the masts of the ships, not by setting an officer on deck.
* Directly after the battle between the Black Pearl and the Flying Dutchman near the end of the film, Barbarossa says "Belay that, or we'll be a sitting duck!" in response to Jack's command. but the phrase "sitting duck" was not introduced until the early 1900s.

* All the gallows have a style of the trap door was not used until the 1800s.

* There's a Toys/TeddyBear at the end. The incident with TheodoreRoosevelt and his bear took place in November 1902. The political cartoons of Clifford Berryman which were inspired by the incident started appearing that month. The toy bears inspired by the cartoon were introduced, simultaneously but independently, by Morris Michtom and Richard Steiff in 1903.