Visible crew/equipment: After Barbossa is shot by Jack, Barbossa pulls apart his jacket to reveal the wound. In this close-up, behind Barbossa to his left, the blue cloth/mat is visible at the bottom of the screen lying on the treasure pile. It was obviously not there in the previous shots. (Though this is visible on the DVD, a better view is on the video.) (02:01:20)
Continuity mistake: When Jack holds the chain to Elizabeth's neck, when he flees, while he is flying through the air, when he throws the chain over the rope, as he slides down and then runs away, the shackles go from being over the sleeves to being on his bare wrists with his sleeves pulled up, then back over the sleeves again repeatedly. Then when Jack approaches drunk Mr. Brown, the shackle is on his bare wrist as seen from the front of Jack, but in the shot from his side, the shackle is over the sleeve. This continues throughout this entire scene; Jack's left sleeve goes from under the shackle to rolled up to his elbow then back under the shackle. (00:21:15 - 00:24:35)
Continuity mistake: When the sinking Jolly Mon 'sails' towards the dock, the straw basket which sits on the dock changes positions in the following shots, as does the rope lying on the side of the dock. When the dock master says, "It's a shilling to tie...dock," they look at what's left of the boat. The flag is hanging straight down, not blowing, but after Jack says, "And we forget the name," the flag is now wrapped around the mast. The following is only visible on VHS: there is one large barrel directly in front of Jack, but when the shot faces the Jolly Mon, there are two - a small one appears, which has a paint splattered top. (00:10:00)
Continuity mistake: After Will rescues Elizabeth and brings her aboard the Interceptor, in the first shot from behind Elizabeth, Anamaria isn't holding her hat and the pirate behind Mr. Cotton is holding the tail of the parrot to keep it still. In the next couple of shots from the side, Anamaria is holding her hat because it's so windy. Just before Mr. Gibbs says, "Keep to the code," the close-up on Anamaria shows her hands down again, with no wind. In the next wide shot, Anamaria is holding her hat again due to the wind. (01:16:00)
Continuity mistake: When Jack and Will are walking under water carrying the boat over their heads, Will steps into a wooden trap with a buoy line attached. The trap is made of wood sticks and in each of these shots the style of the wood sticks is different. In the first shot, Will's foot goes through the top, and is at one side of the rectangle trap and the buoy line is at the other side of the trap. In the next shot, Will looks down into the water at the wooden trap, his foot is in the center of a square wooden trap and the buoy line isn't seen in this shot. In the next wide shot, he's dragging the trap as he's walking under water, and his foot is at the same side as the attached buoy line, which is seen in this shot, on a rectangle trap. The trap is then tied to Dauntless' rudder, and again this trap is styled differently than the trap in the previous shots. This has nothing to do with the angle of the camera. (00:45:25)
Continuity mistake: Interceptor is side by side with Dauntless, in order to capture Jack and Will. Norrington boards Dauntless with three other men following him and in that close-up ON deck, Norrington says, "Search every cabin, every hull, down to the bilges." Yet, in the next shot, Norrington and those three men are actually seen just climbing up the gangplank to Dauntless. (00:46:55)
Continuity mistake: Barbossa rips the chain and medallion off Elizabeth's neck, puts it into her palm, then cuts her hand. He takes her hand in his and he turns hers over so it's palm down. The chain can be seen in the close-up and wide shot, dangling down between her fingers and the chain is NOT clasped shut. In the next close-up of the chain and medallion falling into the chest, the chain IS clasped shut. (01:11:55)
Visible crew/equipment: Aboard the Interceptor, as Jack asks, "Can you sail under the command of a pirate...?" at the upper right corner of the screen, the corner of the crew's white reflector screen is perfectly visible in front of the boom. (00:50:15)
Visible crew/equipment: During the battle between the Interceptor and the Black Pearl, as Jack takes Elizabeth aside and asks her where the medallion is, on the top right corner is a film crew member's hand with a watch on it. (01:29:05)
Revealing mistake: During the sword fight in the blacksmith's shop, Will pulls a blade out of the fire. While fighting Jack, the heated blade sparks when their two swords clash. When Will blocks a hit from Jack, the impact is far BELOW the red/orange hot section of Will's sword, yet it sparks right at that spot. It also makes a kind of sound like electricity crackling. A heated blade would not make this noise, nor would it send out embers or sparks where it is not heated. Only the tip is heated, however the whole blade has an electrical current running through it, mentioned in another mistake. (00:24:15)
Continuity mistake: When Will and Jack are in the bar in Tortuga, Will stands with his back to the wall and on that wall is a shelf with a candle. The candle height changes and the candle drippings are very different in these shots too. Also, shots in the deleted scenes. (00:52:10)
Continuity mistake: When the medallion drops into the chest, and when Barbossa removes it, there is blood on both sides of the medallion. When Barbossa hits Elizabeth and she falls, the medallion falls near her. In this shot we do not see any blood on the medallion. Yet when Will rescues Elizabeth, she reaches for the medallion and it now has a very obvious blood stain on it. (01:12:20 - 01:13:35)
Revealing mistake: When the gallows, in the Fort's courtyard, blows up, just before the huge explosion, four of the platform legs can be seen exploding in the same place, at the same time. A horse and rider pass by in the wide shot, another platform leg, the arm of the gallows and the actual platform explode in sync. Also, in the next close-up we see where the nearest leg of the platform has been cut to help facilitate the explosions impact. (00:31:25)
Revealing mistake: Before Interceptor's explosion, in the close-up it's very apparent that it's not the real Interceptor. Some examples are, no rigging at the stern-most mast, at the railing there are no belaying pins with or without all the lines hanging from them, there are no cleats with or without lines and at least two of the swiveling mounts at the stern for the swivel cannons aren't there. (01:30:40)
Deliberate mistake: Jack wears one pair of boots throughout the movie; however, the heel has at least two discernible heights, including the ones worn in the underwater close-up. One kind is worn by Tony Angelotti (Johnny Depp's stunt double) and the others are worn by Depp. When Jack steps onto the dock from the Jolly Mon and when he's balancing himself on Will's sword at the attempted hanging, he's wearing the higher heel boots. As Jack crawls across the broken mast chasing the monkey, and when he dives off the Pearl's plank, the lower heel boots are obvious. (01:34:40 - 02:06:30)
Deliberate mistake: After Will and Jack swing aboard Interceptor, Will cuts four lines from the belaying pins on Interceptor, that lead up to Dauntless and each line snaps back. As Interceptor pulls away though, we see other lines that are still connected to Dauntless, but then the shot cuts away. Because of a mishap during filming, it was the only shot Director, Gore Verbinski had of Interceptor pulling away from Dauntless. (00:47:05)
Continuity mistake: At the dock in Port Royal, in the close-up as Jack makes his escape from the Marines, he is standing on the beam as he throws his shackle chain over the rope. The ledge to his left, just under the rope, has a metal support that is flush with the wood's edge. In the next wide shot as Jack starts his descent down the rope, the ledge and its metal support are not the same as in the close-up, they are obviously very different. (00:20:10)
Revealing mistake: The clasp closure on the medallion's chain is NOT the sort that just comes apart when yanked on, evident in the many close-ups of the clasp throughout the film. Yet there are a number of scenes in which the chain is just pulled and it comes off easily: Elizabeth pulls it off aboard the Pearl, to barter with; Barbossa pulls it off, during her blood ritual; Elizabeth pulls it off to give to Will, aboard the Interceptor... The chain was secured to her neck with sellotape, in order for it to come off quickly for the shots. (01:12:15 - 01:19:28)
Continuity mistake: After her anchor is lowered, there's a front shot of Interceptor as it splashes wildly and a crewman that is dressed as Will is seen up on the port side of the rigging. After Elizabeth shouts, "Let go!" the crewman dressed as Will is up on the rigging, but now he's on the starboard side of the rigging. This is not a flipped shot, the sails are different in both shots too. (01:24:25)
Continuity mistake: At Jack's hanging, as the official says, "Impersonating an officer in the Spanish Royal Navy," in this far shot, we see the scaffolding and the Marines walking on wall behind. In the next shot, he says, "Impersonating a cleric of the church of England," and we still see the Marines. Then in the next shot, a close-up of Jack, we also see the Marines. These are successive shots, yet the Marines are NOT in positions of continuous walking. (02:05:05)
Answer: The curse needs the blood of everybody who took a coin from the chest. All the other pirates have already contributed so, as the movie opens, the only blood needed is Will's, substituting for his father. During the finale of the movie, Jack takes a coin from the chest, adding himself to the curse, so his blood is now required as well as Will's.
Tailkinker ★
But I didn't see any blood on the coins, and none of the pirates cut themselves, even before Will became part of the mix.
Yes, the other pirates did cut themselves before Will came into it, off-screen. The lack of blood on the coins can simply be explained as most of it dripping to the bottom of the chest, it being washed away by storms blown into the cave, or by the fact that they didn't drop that much blood on it in the first place.
When they had Elizabeth they believed she was Bill Turner's daughter, but they all thought the curse had failed, none of them had cut themselves so it makes zero sense.
They had been collecting back the coins for years. During that time they repaid their own blood. All they needed was the last coin and the blood of Bill Turner to break the spell.
lionhead