Continuity mistake: Dennis Hopper stands on the back of the boat and says to Captain Willard, "Yeah, well, they think you've come to uh - , to take him away". If you look to the left of the screen you'll see a piece of seaweed hanging off the roof of the boat. When Dennis Hopper walks back to the front of boat it's gone. (02:30:15)????
Continuity mistake: When they first approach Dennis Hopper we see the water on the left side of the boat past where Lance is sitting and there are no flames on it. After Hopper jumps on the boat and goes to shake the captain's hand we see an oil slick burning in the middle of the water. (02:29:40)????
Continuity mistake: After Dennis Hopper walks around to the other side of the bamboo cage Captain Willard turns around to look at him. Now both his upper and lower lips are parched but when we saw him in a close-up before when Dennis Hopper said, "he likes you, he really likes you" only the captain's lower lip was parched. (02:43:50)????
Continuity mistake: As they pull up next to the Vietnamese sampan, Chief Phillips moves the spotlight on top of the PBR with his left hand so it's pointing at Chef as he takes the papers from the fishermen. Thirty seconds later there's a wide shot of both boats as Chef reads the papers and we see the spotlight back to where it was before facing away from Chef even though Chief Phillips doesn't touch it again. (01:35:05)????
Continuity mistake: In a close-up Chief Phillips he says, "sampan off the port bow" and we see a kaki green T-shirt hanging next to him at the right of the screen. A couple of shots later Captain Willard says, "what up chief" and Phillips takes the T-shirt down. In the next wide shot of the boat the T-shirt is back. (01:34:15)????
Continuity mistake: Hubert de Marais says to Captain Willard, "And this is something that you never understood, you American". The gentleman in the tan jacket to his left lowers his cigar towards the ashtray. In the next shot his hand is resting on the table with the cigar between his fingers then he puts it in the ashtray. (02:06:50)????
Continuity mistake: Captain Willard introduces himself to Colonel Kilgore and says, "I carry priority papers from Com-Sec intelligence, II Corps". There are three guys in Kilgore's helicopter watching the filming by the side door. This is a wide shot and no other soldier is there but three seconds later another soldier appears standing by the pilot's window. (00:27:25)????