Continuity mistake: The length of Edward G. Robinson's necktie rises and falls, often within the same scene.
Deliberate mistake: The same scene of William Bendix at bat swinging and missing is used repeatedly in the film.
Revealing mistake: When Howard and Curtin chase Dobbs, they pass a dead donkey which is obviously breathing, and the rope used to tie its legs together is visible too.
Continuity mistake: Near the end of the movie, Lucinda is severely injured in her leg, and has to hobble to walk. In the last scene (a short time later) as she approaches her home, she is walking with no problem, and has her arm in a sling.
Audio problem: When Phillip plays on the piano, the music doesn't match his finger movements.
Continuity mistake: When Leona picks up her hand mirror, her medicine tray is positioned directly in front of her on her bed. When she puts the hand mirror down in the next shot, the medicine tray is pushed about a foot away from her bed.
Plot hole: When Ralls runs the Witch onto the reef, he is at the helm. As she strikes bow on, the wheel spins madly for no reason, as the tiller ropes would not have been affected by the collision.
Continuity mistake: When Montgomery Clift puts the boy into his jeep, the jeep has the standard seats. When he arrives at his house with the boy, the jeep has custom seats. The seats change again later in the movie also.
Factual error: At the start of the film the father (Cedric Hardwicke) alights from a LNER suburban train then walks to his Wimbledon home. The film is set in 1913 but the LNER was not formed until 1923. That apart, LNER suburban services did not serve Wimbledon. A few scenes later the father and mother are sending off their son at Liverpool Street Station on his journey to Osborne Royal Naval College at Dartmouth. Strange since Dartmouth would have been (and still is) reached from Waterloo.
Continuity mistake: As he eats, a bread chunk rests on the table to the right of Oliver's bowl. As he rises, the bread is gone. (00:14:20 - 00:14:50)
Continuity mistake: The protagonist wakes up screaming and runs away from her cabin. A conductor restrains her. During the scene, the shadows on the wall/poster and on the torso of the black helper heavily change depending on the camera angle used. (00:02:25)