Continuity mistake: When the Captain asks the Chief for the binoculars the boat is standing still but in the next shot as the Captain is watching Kilgore's men they're moving rapidly towards the shore. However, in the next shot, a close-up of the Captain, the ship is back in the same place and standing still. (00:24:40)????
Continuity mistake: When Dennis Hopper says, "The heads, you're looking at the heads, sometimes he goes too far, he's the first one to admit it" look at the two cameras around his neck. At first the lenses are both pointing outward then in the next shot he turns around and the left camera lens is pointing at the ground. (02:33:40)????
Visible crew/equipment: After Chief Phillips is speared if you look closely at his left shoulder you can see his shirt bunched up by the harness underneath that holds both ends of the spear to his body. Later you can see a blood bag underneath his tee shirt as he lies on the floor of the boat dying. (02:22:40)????
Continuity mistake: Look closely at the shadows going across Chief Phillip's face just before he tries to kill Captain Willard. First they're going from left to right, then in the next shot when he grabs the captain's head, they're going from right to left. This happens several other times in the scene. (02:23:05)????
Continuity mistake: Just after the rocket attack that kills Clean starts there's a close-up of Lance manning the machine gun in the front of the boat. The Vietnamese spray this area with machine gun fire and chip away a lot of the green paint to his left under the radar dome. The next time we see this spot the paint is untouched. (01:52:00)????
Continuity mistake: The Vietnamese fishermen hand Chef the two small pieces of paper that they had in their hands. He reads the first one for a while then grabs the second one from the guy in the middle, leaving them with no papers in their hands. The next time we see Chef two shots later he has only one piece of paper in his hands and is now grabbing a new large identification paper that none of the three had before. (01:35:25)????
Continuity mistake: After the boat docks at the Medevac Captain Willard gets out and walks around and it's clear from the wide shot that there's only one helicopter there. When he comes back to tell the guys about the arrangement with the bunnies we see a close-up of this helicopter and it has yellow tipped rotors. The helicopter that Chef and Miss May are in later in the scene is different as it has white tipped rotors. (01:31:50)????
Continuity mistake: Colonel Kurtz sits at the door to the dark room where Captain Willard is being held reading articles to him from Time magazine, and it's obvious that the light is coming from the door in front of him. The door doesn't close nor does the captain stop looking forward, but the lighting changes throughout the scene. In some of the close-up shots his entire face and neck are lit up and in other shots shadows fall across his face and neck. (02:51:15)????
Continuity mistake: One minute into the attack on Vin Din Dop one of the helicopters flies over the schoolyard. This aerial shot is taken around mid-day as there are no shadows visible in schoolyard, unlike the first shot of the schoolyard at the beginning of this scene, which was done when the shadows were long. (00:40:20)????