Revealing mistake: In both instances in the film where a helicopter explodes, it is quite evident that it is a model and it falls to the sea in one piece.
Revealing mistake: In the scene where the speedboat is landing onto the sea, after bursting out of the large tanker, one can see dummies on the speedboat.
Revealing mistake: As Bond and the major are hurtling toward the surface in the "escape chamber" toward the end of the movie, you can see inside the window. The little toy escape chamber is about two thirds full of splashing water right in the area where they are supposed to be.
Revealing mistake: When Bond and XXX are visiting Stromberg's home by speed boat it shifts or rocks in the water when they step on board. This is normal, because speed boats are very unstable. When they reach Stromberg, they have to step off, but the boat does not shift in the water as it should, in fact, the way the boat slowed and stopped was stiff and unnatural. Obviously indicating the boat was on a trailer for these scenes.Vince van Riet
Revealing mistake: During the helicopter/Lotus chase the shots of the helicopter turning are used twice.
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.