Continuity mistake: At the submarine base Bond places a see through copy of the submarine course on the display and the two lines match up and are touching, in the next shot the bottom of the lines are no where near each other but meet further up in the middle.
Revealing mistake: During the helicopter/Lotus chase the shots of the helicopter turning are used twice.
Deliberate mistake: When the speedboat docks at the Stormberg Laboratory with Bond on board the speedboat has no helm or gauges fitted to the dashboard. From that angle we should see them or something resembling them as we did when Bond was picked up.
Continuity mistake: When Jaws gets up at the phone booth, he puts his hand near the handle to open the door. However, in a close up shot of Kalba, Jaws' hand is level with Kalba's face, nowhere near the handle, and in the next shot back near the handle.
Other mistake: When the helicopter is chasing the Lotus Esprit, it is flying fast, doing sharp turns and firing bullets. Even for the most experienced pilots, this would take a lot of concentration and hard work and would result in some stress. But when Bond spots Naomi in the pilot's seat, she is totally relaxed, stress free and barely looks like she's doing anything.
Suggested correction: Not a mistake; this is movie-land, after all. When Bond spots Naomi, and they share an awkward smile, both are travelling in a straight line at that moment. No reason why she couldn't spare a few seconds to taunt her target.
Indeed. Also, Naomi's working for a megalomaniacal madman as a secretary and an assassin. It's perfectly reasonable she's a stone-cold psychopath.
Continuity mistake: The position of Stromberg's "Atlantis" changes during the film. One moment its far enough out to see it takes a speedboat to get to it, then its so close to land Bond can get to it and back with his Lotus, finally its back out far enough at sea when the American submarine destroys it.
Continuity mistake: When Bond's car comes out of the water, the number of people on the beach keeps changing all the time: A couple on the shore next to the car appears and disappears and the crowd on the right side increases and decreases randomly.
Continuity mistake: A guy in the submarine sits down next to a couple of guys playing chess. The man behind is reading a magazine at eye level, which a frame later disappears.
Continuity mistake: A sailor on one of the submarines took the paper for the incoming telex with the new coordinates for the missile: code 0292765491. Then he reads the coordinates from this paper, but said something completely different: code 034285219.
Revealing mistake: The escape chamber is being lifted into a ship at the end of the movie, but look closely. The reflection we see in the the window glass of the chamber is that of a sunny beach and several palm trees quite nearby, and what looks to be either a palm tree or a camera man in the lower right section of the glass.