Best movie mistake pictures of 1981
Continuity mistake: When Snake kills the wrestler he falls forward shoulders forward, next minute his arms are over the ropes, next minute his arms are in a different position again - quite active for a dead man.
Factual error: The ship transporting the Great Britain team to France has a marine radar antenna, which did not appear on ships in that decade.
Visible crew/equipment: In the scene where the bad scanner is trying to kill the good one using the telephone line, when the good guy turns it back and blows up the office/lab at the other end, one of the scientists is blown back through the glass by the explosion. In the shot from outside the room, it is easy to see the cable pulling him back.