Corrected entry: When the Orlando finally gets a shooting solution on the Stingray and the admiral calls to gloat, he is quite surprised when Dodge informs him he's already fired his torpedoes. In reality, the sonar officer on the Orlando would have been screaming "Torpedo in the water!" as soon as the first torpedo left the Stingray.
Corrected entry: When the stingray is trying to evade the Orlando by going between the rudders of an oil tanker, after Lt. Lake takes the control ("Balls to the walls, boys"), there are two different sets of actors at the rudders and the camera goes back and forth between the two sets of actors.
Corrected entry: Stepanik is introduced in the crew boarding scene as an Engineman First Class, however in the homecoming scene, his uniform insignia is that of a Machinist's Mate First Class.
Corrected entry: This movie appears to take place in 1996. The first production Seawolf-class submarine was launched in 1998.
Corrected entry: The qualification badge of Lt. Lake's uniforms through most of the movie is that of a surface warfare officer. At the end of the movie she finally wears the correct qualification badge, the submarine warfare badge or commonly called "dolphins."
Corrected entry: Nitro could not have operated as a connection for the radio circuit. The human body is not conductive enough.
Corrected entry: The salute that Stepanek gives his father is incorrect. A proper U.S. military salute does not show the back of the hand; it shows it palm-down, angled slightly to the temple.
Corrected entry: As the crew leaves the Stingray in dress uniform near the end, Lieutenant Lake's Mary-Jane style heels are completely non-regulation. While many of the crew are misfits and don't properly wear the uniform (or cut their hair) anyway, Lake was a "by-the-book" officer consistently through the whole film. United States Code Title 10 > Subtitle A > Part II > Chapter 45 > Section 772 > Statute F specifically allows that "While portraying a member of the Army, Navy, Air Force, or Marine Corps, an actor in a theatrical or motion-picture production may wear the uniform of that armed force if the portrayal does not tend to discredit that armed force" so the argument that actual uniforms cannot be worn in movies does not apply (here or ever).
Corrected entry: Martin Pascal's index finger goes from the lid of coffee to the side of can a couple of times while yelling at Buckman. (00:18:15)
Corrected entry: When the Stingray is entering the Denali's propwash, Lake informs the captain that they need to steer right. She assumes the conn, orders hard right rudder, then back 2/3rds. Right rudder in reverse would point the nose to the left, a situation they specifically wanted to avoid.
Corrected entry: There are numerous references to the word "quadrant," being substituted for "region." A quadrant is one-fourth of something. It is not a generic, military-sounding name for a region.
Corrected entry: In the credits there is a name for a singing waitress named Annie Talbot. As far as I can tell, there is no singing waitress in this movie. (01:28:20)
Corrected entry: When Admiral Graham and Admiral Winslow are in Charleston harbor waiting for Commander Dodge to arrive, Admiral Graham states that he's in line for a third star. Admiral Winslow then replies that this would no longer make him outrank Graham. Admiral Winslow's uniform has three stars on it, so if Admiral Graham did receive a third star, this would mean that he wouldn't outrank Admiral Winslow but that they would both have the same rank.
Corrected entry: When the Admirals are going over Dodge's FitRep, Admiral Graham states that Dodge received his tattoo as an ensign. However it is also stated in other scenes that it happened after the Murmansk incident three years ago. One does not go from ensign to Lt. Commander in only three years.
Corrected entry: Near the end of the movie, the Stingray surfaces to run on top as it approaches the target ship. At some point afterwards, Dodge decides to take a shot at the ship with two torpedoes. Dodge is using the periscope to get the range, etc. to the target, and then fires the torpedoes. First, wouldn't they be on the bridge (outside) if they were running on the surface? And second, wouldn't the torpedoes be running near the surface of the water if they had been fired from a sub that was on the surface, instead of what appears to be deep water? In both cases it appears as if the Stingray were submerged when they fired the torpedoes, not running on top as it showed prior to firing the torpedoes. No order was given to "dive" before this series of events.
Corrected entry: In the scene when Pascal is being made to walk the plank, Lake seems surprised that he fell onto a fishing boat. Given her position on deck, she should have seen that the boat saw moored along side.
Corrected entry: When they're at the bottom of the ocean running silent, look behind Jackson. The gauge reads 17ft salt water depth to keel. That can't be if they're at the bottom. (00:48:20)