Factual error: Barbossa addresses one of his officers as "lieutenant-commander". This rank was not introduced into the Royal Navy until 1914.
Factual error: In the courtroom scene, the Judge uses a gavel (the small wooden hammer). These are not, and have never been, used in British courts.
Factual error: Captain Barbossa's ship has a modern Union Jack flying on the stern. The film is set in the reign of George II (1727 - 1760). The flag shown includes the cross of St Patrick, although Ireland did not become part of the United Kingdom until 1801, and the Union Jack at the time of the film would have comprised only the crosses of St George (England) and St Andrew (Scotland).
Factual error: The soldiers chasing Sparrow in London have red cockades on their hats. They should be wearing Hanoverian black cockades, as George II was the second king of the House of Hanover.
Factual error: None of the British army officers is wearing the gorget, which was an officer's insignia at this time.
Factual error: After the mermaids scene, when Blackbeard, Jack, and the others start walking through the next island to find the silver chalices, two distinct bird calls can be heard. Both are native to Australia - they are the Magpie Lark, also known as the Peewee, and the other is the Willie Wagtail. Both birds are not found anywhere remotely near the Caribbean.
Suggested correction: These movies aren't set in a specific time.
Credit for the following goes to another member here, Super Grover, who actually answered a question about the dates the films are set a while ago. These dates are estimates. The intro of 'PotC: The Curse of the Black Pearl' takes place mid-1720s (roughly 1725), when Will and Elizabeth are around 11/12 yrs old. Then eight years later the duo are about 19-20 yrs old during the main part of 'The Curse of the Black Pearl', then around a year later are set to marry in 'PotC: Dead Man's Chest' followed by the consecutive 'At World's End', which take place around 1733 / 1734. The next movies 'PotC: On Stranger Tides' and 'Dead Men Tell No Tales' (after the intro) take place in the 1750s. Again, credit to Super Grover.
Ssiscool ★
They're set in the 1700's. In "On Stranger Tides", King George wants Jack to find the Fountain of Youth before King Ferdinand, who reigned from 1746 - 1759.
Bishop73