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: 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: 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)
Corrected entry: Stan Sylvesterson is talking to Jackson about Jackson playing in a basketball game against the Army. If Jackson played basketball for the Navy, he would have been at the Academy thus making him an officer by now and not enlisted.
Corrected entry: Captain Dodge, rather than talk to Admiral Graham over the radio, won a radio call-in contest. However, a ship's radio operates on a different set of frequencies than cellular phones, which was presumably the mistake made. Besides, the radio was manufactured, presumably, for the 1958 refit - it would not have had the electronics to be carried as a cell phone conversation.
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.