Corrected entry: A depth charge explodes right off the starboard bow, and the whole front end of the sub actually bends and snaps back. The force of the explosion wouldn't cause it to bend, it would either break off completely or there would be a large hole.
Corrected entry: When the U-571 is being depth charged one of the men asks Chief if he has ever been depth charged before. He says "once, in World War I..." But during WWII they did not refer to the first world war as World War I. They still called it The Great War. It wasn't until after WWII that either war was referred to that way. (01:18:10)
Corrected entry: After the S-33 is torpedoed, Tyler and his men rig the U-571 for dive. Just before Wentz says "Opening midship valves; opening midship vents," someone else - I think it's the Chief - says "Opening ballast tanks." This makes no sense; the ballast tanks are the air tanks - you open them when you want to surface, not when you want to dive. (00:51:30)
Corrected entry: Throughout the movie, when the sub is submerged, it show the submarine about 10 meters down, not 100, or 200 as the characters stated.
Corrected entry: For the raid on U-571, Tyler chooses to dress as a German officer, thus making himself the most likely one of the boarding party to be addressed by the German crew, even though he speaks no German (which ultimately gave the deception away early). This tactical error is inexplicable, given that there were two fluent German speakers among the Americans.
Corrected entry: Why does the German re-supply U-boat open fire on the disguised American sub when they are docked with U-571? The American Sub is disguised well enough to pass a visual inspection, and you'd think the Kriegsmarine sailors would be pleased to see some fellow Germans at sea. They certainly wouldn't simply open fire with torpedoes because they didn't recognise the other U-boat.
Corrected entry: After having his language skills tested, the German speaking Seaman Wentz implores Tyler not to reveal his half-German background to the other men, even though he openly uses a German surname.
Corrected entry: The Germans drop the bombs down on the submarine at the rate of two every 5 or so seconds. So how come there are sometimes many many explosions around the submarine within a very short space of time?
Corrected entry: They're actually using the U-571 to flee away from the German re-supply sub (the whole movie). Wasn't the U-571 broken? If it wasn't the German crew would have sailed to port long ago of course.
Corrected entry: The German commander is depicted eating a piece of fruit just prior to the depth charge attack against the U-571. No German commander would have done this. Food was strictly rationed and accounted for on the boat for various reasons - not the least of which was making sure there was enough to last for the duration of the patrol. If men were allowed to grab food and eat it as it suited them there would be no way to control its consumption. No commander would have set such a dangerous precedent by such wanton consumption.Badbird
Corrected entry: Anybody with any mechanical knowledge seems to have been killed in the fire in the engine room, on a sub on patrol there would have been at least two watches, one working, one resting and both watches would not have been in the engine room at once.
Corrected entry: In the scene on the dock where the mess steward sees the lieutenant struggling to light a cigarette, he comes over and offers his lighter. The officer was actually facing away from the sailor, so how could the mess man even know the lieutenant could not light the cigarette?
Corrected entry: The sailors - rightly so - become very frightened when the long range plane spots them. However no sub captain in his right mind would stay on the surface if he heard the sound of an aircraft - it was one of the lookout's primary tasks: alert the captain if they heard propellers, and prepare to dive.
Corrected entry: When the US commandos are about to board U-571, we see a cocked MP-40 gun hanging from an officer's neck, which is hidden in his jacket. You don't just let those guns hang like that, or it'll fire off at the slightest shock. Not a very smart thing to do in a stormy sea.
Corrected entry: Enlisted submariners of that time period wore silver dolphins on their dress white uniforms (like the officers wore their gold ones in the movie) and not black embroidered dolphins on their sleeves.
Corrected entry: When U-571 is supposedly at 200+ meters below the surface, the depth charges seem to be getting dropped into the water, as if they were 5 meters up, not sinking in the water as if they were 200+ meters down.