Visible crew/equipment: Will rescues Elizabeth from Isla de Muerta and brings her back to Interceptor. Will says, "He fell behind," then Gibbs says, "Keep to the code." In between those two lines there is a shot of some of Jack's crew, and beyond the white haired man's right shoulder, a bald crew member is partially seen. He is not one of Jack's crew, as every one of them, bald or not, is accounted for on deck from the time Elizabeth comes aboard. (01:16:15)
Continuity mistake: After falling off the parapet, Elizabeth is under water, and we see a close-up of the medallion floating freely, causing a tremor in the water. When Jack gets her back on shore and rips open her corset, the medallion is now firmly tucked inside her dress - no way it could have just slipped in there given how insanely tight it was. (00:15:40)
Visible crew/equipment: After Elizabeth hides the dinner knife in the napkin, two shots later, as Barbossa hands the medallion to the monkey, there are two rods visible below the swing - one at each end - to keep the swing steady. (Visible on VHS.)
Continuity mistake: Barbossa says, "Buried on an island of the dead what cannot be found, except for those who know where it is." In this shot only the objects in the center of the table slide down towards Elizabeth, including the two candelabras and her plate of food, having nothing to do with the object's weight. The objects that face Elizabeth on the table to her left and to her right don't move, only those on the moving center track. Also seen on DVD 2. (00:56:45)
Continuity mistake: Aboard Interceptor, Will points his sword at Jack, and Jack swings the boom that slams into Will. In the side wide shot as the boom comes toward Will, when we see Will's hands as he grasps the boom, he is not holding the sword, nor do we see it drop or see it on the deck; however, we do hear it hit the deck. In the next shot, Jack picks up Will's sword near the line and rail, where it didn't exist in the previous shot. (00:49:35)
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)
Continuity mistake: As Will and Grapple fight, in the shot facing Grapple after Will's sword is hurled away, Grapple grabs Will directly around the back of his neck with the grapnel and starts to pull him close. However, in the next shot facing Will, the grapnel is only at Will's shoulder and left arm, as Grapple pulls him close. (00:34:55)
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 being rendered unconscious by Will, a dazed Jack Sparrow runs into the pirates in the caves after the first blood sacrifice attempt. He turns around and faces Jacoby and another pirate. He turns around once again to face Pintel and all the others. But of the four shots showing Jack, one shows only Jacoby behind him, two just show the smoke from Jacoby's beard, and one shot in between, shows no pirates standing behind Jack at all. (01:15:20)
Continuity mistake: When Gillette puts the iron shackles on Jack, as Elizabeth offers her protest, in the shots facing them, there is a barrel with a green sack on top of it and two wicker rods against the stone wall. However, when Norrington says, "Indeed," then when Jack says, "Finally," and also when Jack says, "I saved your life. You save mine. We're square," the barrel, sack and rods are not there. (00:18:25)
Continuity mistake: After Jack rescues Elizabeth, he slices the front ties of the corset she is wearing, and gives the corset to Murtogg. As he hands Murtogg the corset in the first shot, the corset is right side up, because we see the waist flaps at the bottom. In the next shot, as Jack's hand lets go of the corset Murtogg is seen holding the corset upside down with the shoulder straps at the bottom. In the next shot, a close-up of Jack, in the background Murtogg is holding the corset right side up, and the waist flap is seen. (00:16:35)
Continuity mistake: When young Elizabeth holds up the medallion, and she sees the Black Pearl, her fingers are positioned differently in the wide shot and in the close-up shot of the medallion. (00:04:40)
Continuity mistake: Aboard Interceptor, Will and Elizabeth are below deck, and seen on the table are candles on a plate. The three candles and the melted wax on the plate to the right of Will's elbow, differ in the opening shot, when Will says, "Here let me," and when he has the medallion and slams it down onto the table. The candles do not melt so quickly, while they have this very short conversation. (01:17:35)
Continuity mistake: Before Jack says, "Ta," there's a close-up of their feet and there's a 2x4 edge on the cart. Later, Jack tosses the mallet at Will, who ducks down, the cart's seen and there are two strips of wood as the edge. When Jack flips a plank, it smacks Will in the face, he falls and that end of cart's seen and now there's no finished edge. When the barrels fall on the edge of the cart, we see the 2x4 edge again. In many shots throughout the scene the edge changes. Also, in a couple of shots the edge has a cut out in the corner, for the wire they used. (The wire can be seen on Disc 2.) (00:23:35 - 00:25:30)
Continuity mistake: As Jack bids farewell, in his extreme close-ups, when he says, "Elizabeth. It would never have worked between us, darling. I'm sorry," the soldiers behind him are lined up differently in these shots than in the wide shot just before and after, when Jack starts to walk away. (02:09:00)
Other mistake: When Elizabeth is watching the attack on Port Royal from her balcony, the Black Pearl is at least two miles away. And yet one shot is able to hit the house.
Continuity mistake: At her home, when Elizabeth bars the door handles to the dining room with a candelabra, Pintel and Ragetti burst in, breaking that candelabra. Visible to Pintel's left in this shot is a cushioned chair and a small table, with absolutely nothing on it. Yet, in the next wide shot of the dining room, there is now a large candelabra on that small table near the door. (00:33:25)
Continuity mistake: In Port Royal when Elizabeth is being taken by the pirates, Will sees her across the courtyard and she calls out, "Will!" In the first close-up as he begins to say, "Elizabeth," the crowd behind him differs greatly to the crowd seen behind him in the very next wide shot as he finishes saying, "Elizabeth," and then when Jacoby says, "Hello," in the next shot of Will. This is not due to people running around, it was simply shot at different times. (00:35:10)
Continuity mistake: When the coach leaves, Will walks down the steps. Both side gardens are edged with stones outside the front door. The driveway is also lined with the stones. When the pirates invade their home, Ragetti yells, "Up there." The front door's open and the stones are now lined up parallel to the front of the doorway, just past where the steps should be. Even if it's meant to be the stones lining the opposite end of the driveway, the distance of the far side and proportional size of the rocks are wrong. (00:08:45 - 00:32:15)
Continuity mistake: When the Black Pearl is chasing the Interceptor, we can see Will standing at the end of the bow (front) of the ship. Later in the scene, we see him coming up from below deck, where he has been the entire time. Nobody in Jack's crew resembles or is dressed like Will. (01:21:15 - 01:22:45)
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