Corrected entry: In the beginning of the movie a general refers to Khrushchev and Kennedy (both ruling in the same period) as the actual rulers of both countries. In the propaganda movie however they show Richard Nixon (ruling 6 years after Kennedy was killed) as President.
Corrected entry: When they are cutting the stainless steel reactor pipe to tie in the new water supply, they are using a cutting torch, only carbon steel, ie. steel that corrodes, can be cut by torch.
Corrected entry: The name of the reactor officer, as mentioned several times in the film, is Vadim Radchenko. Toward the end of the movie, in the cemetery, his gravestone says 'Victor Radchenko'.
Corrected entry: The conning tower of K-19 is pressure damaged in the scene where they take the sub to 300m, yet in subsequent scenes the tower is intact and in perfect condition.
Corrected entry: In the scene where the first team is about to go into the reactor chamber to attempt a repair, Harrison Ford bids them well with the phrase "may God be with you". In the 1960's the U.S.S.R was a communist super power and the state's official position was that of Atheism. Throughout the film, Harrison Ford exemplifies the state's objectives in all aspects. Therefore, it is highly unlikely he would ever refer to "God".
Corrected entry: When the nuclear technician is talking to the commander about what will happen to the reactor, he mentions that the reactor will go into a thermonuclear explosion. This wouldnt happen, as for a thermonuclear reaction to happen a fusion reaction must happen. The reactor is a fission reactor, so would not go thermoneuclear.
Corrected entry: In the first scene in the Naval headquarters where Harrison Ford is told he'll be commanding the sub, there is the sound of a helicopter flying overhead. The same helicopter sound occurs during the courtroom scene at the end. The sound is that of a Bell UH-1, commonly called a "Huey" which was THE chopper used in Vietnam. (I flew them) It has an extremely distinctive sound that any Vietnam vet will well remember and NO Russian chopper sounds anything like a Huey!
Corrected entry: In the scene before the crew departs, all the officers are shown having a drink. They all stand up, toast and then drink. Liam Neeson's character stands up to make a speech. As soon as he finishes all the officers stand up again and drink. At no time did they refill their shot glasses nor did a waiter come and fill them.
Corrected entry: Every on in the movie refers to the submarine as K19 but the Conning tower (Sail) has a different number painted on it. The same it true of the rescue sub it was refered to as "S" and some number but the number painted on it did not match the dialogue.
Corrected entry: When they're uploading fruits on the sub one of the extras can be seen getting an orange from a basket in secret.