Continuity mistake: When they dig up the chest and Will arrives, there are long shadows. Yet, when Jack, Will and Norrington duel, they have very short shadows directly beneath them. The large chest's shadow changes as well. (01:40:20)
Continuity mistake: After Jack opens the lid of the large chest, there is a close-up of the filled interior, which lies nearly a foot below the top edge of the large chest, with the smaller inner chest well hidden below. However, in the next shot the lid of the smaller inner chest is way up higher, actually level with the top edge of the large chest - before Jack lifts it. (01:41:20)
Continuity mistake: When Jack, Elizabeth and Norrington remove the small chest from the larger one, and when Will kneels beside them, there are letters, etc lying on the large chest's lid, which change, disappear and reappear. (01:41:20)
Continuity mistake: When Jack, Norrington and Elizabeth find the chest, the amount of flowers visible changes instantly. (01:41:20)
Revealing mistake: On the beach during the sword fight after the chest is found, in one overhead shot it shows the three men are casting shadows in different directions, revealing the presence of on-set lighting. (01:43:50)
Continuity mistake: When watching Will, Jack, and Norrington sword fight on the beach, Elizabeth's nose and cheeks are slightly sunburned. When back on the ship, they're only tanned, and no longer burned. (01:44:30 - 01:55:20)
Continuity mistake: When Jack, Will and Norrington fight for the key, Elizabeth tries to stop them by "fainting". After she gets up after her plan has failed, Pintel and Ragetti are seen running past Elizabeth in the background with the chest. In the next shot, they run past Elizabeth again. (01:44:30)
Revealing mistake: Elizabeth says."Oh the heat." You can see the exact spot where she is going to fake faint, from previous takes. (01:44:35)
Continuity mistake: In the scene when Captain Sparrow, Elizabeth, and Norrington dig up the chest and open it, we can see that there are documents filling the chest all the way to the top. The shot changes, and now you can see that there are fewer documents in the chest, even though they haven't started pulling them out yet. (01:45:05)
Revealing mistake: When Will and Norrington duel on the roof, in the wide shots the face of Will's stunt double is rather obvious. (01:47:30)
Audio problem: Just as the waterwheel begins to roll away from the mill, watch Will and Norrington on top of it - the sounds of their swords clashing doesn't synch up with their actions. (01:47:30)
Visible crew/equipment: While Norrington and Will begin their duel, Jack walks away and promptly falls into the open grave. In the shot of Jack from within the grave, the imprint of a modern, flat bottom trainer/sneaker sole can be seen on the dirt wall (yes, wall) to Jack's left. It is not the imprint of a shoe of the time period. (01:48:00)
Revealing mistake: When Pintel is running up to Ragetti during Elizabeth's rant on Isle Cruses, you can see the path in the sand where Pintel has run up in previous takes. (01:48:05)
Continuity mistake: When Norrington, Jack and Will bang away at each other on the beach, in the shot facing Elizabeth as she puts her hat back on, behind her Ragetti runs ahead of Pintel (3-4 ft) as they steal the chest. Next shot, it is Pintel in the lead as they run off. (01:49:00)
Continuity mistake: During the three way fight for the key, Will uses the bell rope to grab the key from Norrington. A couple of minutes later, while they are fighting on the roof, Jack sneaks up behind them and tries to snatch it from Norrington, despite already having taken it. (01:49:00 - 01:51:00)
Suggested correction: Norrington takes it back from Will during their fight on the roof (not seen but possible), only then Jack tries to take it again.
Continuity mistake: When Jack knocks the pirate's detachable head off with the coconut, the chest drops with the lock facing the ground and the lid's two hinges facing up. However, when Jack reaches the chest, it is the lock's side actually facing up now, before he turns the chest upright - with the lock facing him. (01:50:00)
Other mistake: When Jack and Norrington duel on the stairway of the old church (before Will joins the fun), just as Norrington grabs hold of the key with his left hand, a band-aid is visible on Norrington's thumb. (01:50:00)
Continuity mistake: After Jack jumps from the wheel via the vine, two coconuts fall at his feet. When he looks down at them, in the close-up their positions differ. (01:50:20)
Continuity mistake: When Jack beheads the pirate, the chest lands between certain plants, but when he kneels beside the chest to unlock it, the plants differ - despite the angle of the camera. (01:50:30)
Continuity mistake: After Jack takes the heart out of the chest he hurriedly closes its lid, the locks engage, and the key's end remains in the horizontal position when Jack runs off. However, when Pintel and Ragetti grab the chest the key's circular end is now vertical - the key does not turn itself. (01:51:00)
