Stupidity: No U-boat commander is going to "finish off" a ship that is dead in the water and is on fire from stem to stern. He exposes his boat and his men to mortal peril by surfacing, brightly lit by a full moon and the fires burning on the sinking ship, making them a sitting duck for the destroyers that might well be still in the area. He also wastes a precious torpedo for absolutely no net gain.
Das Boot (1981)
1 stupidity
Directed by: Wolfgang Petersen
Starring: Jurgen Prochnow, Herbert Gronemeyer, Hubertus Bengsch, Klaus Wennemann
Other mistake: When attacking the convoy, the crew rushes forward during the crash dive. Just after a crew member jumps through the hatch after the bow crew compartment, you see someone standing still a second before getting pushed in the view of the camera. (01:31:15)
Captain: I'm sorry.
Lt. Werner: Is it hopeless?
Captain: It's been 15 hours. He's not going to pull it off. I'm sorry.
Lt. Werner: I asked for it. 'To be heading into the inexorable... where no mother will care for us... no woman crosses our path... where only reality reigns... with cruelty and grandeur.' I was drunk with those words. Well, this is reality.
Question: What's the music the German band are playing at the end when U96 returns to port?
Answer: It's the 'Erzherzog Albrecht Marsch', composed 1887.