Factual error: Most uniforms in this movie are worn incorrectly. Between wearing belts incorrectly, not wearing ribbons on dress uniform (shore patrol), female hair regulations, shoes, and having ribbons in the wrong order it's like they didn't even try.
Continuity mistake: When they are attempting to get "between the screws" of the tanker, the underwater footage shows twin screws, but the surface footage only shows wake from 1 single mid-ship propeller.
Factual error: Sometimes when we see the USS Stingray sailing south we see land to the east which would mean this would be on the west coast instead of the east coast (The original ship was the USS Pampantino which sailed off California in WWII).
Character mistake: While the engine room is flooding, Stepanik tries to put a jubilee patch on the pipe by walking towards and deflecting the water. While it looks cool for the movie, it is definitely not the correct way to apply this type of patch.
Character mistake: When Pascal gives his mutiny speech he refers to comsubpac, the Submarine Command for the Pacific fleet. He should have said comsublant. It seems to be a common theme of mistakes seeing as the museum sub they used for the Stingray is kept at a pier in San Francisco. Most of the scenes at dock are filmed there and at sea in nearby waters. Its possible that the original script was based on a west coast 'war game' and later got changed after a number of scenes were already filmed. (01:01:00)
Suggested correction: He says "comsublant."
Continuity mistake: As they get underway, the torpedo indicator has 1 and 2 in yellow, 3 and 4 in blue. A minute later, all indicators are out. Then, after the sub is trimmed, all indicators are blue.
