> Its to benift the English audience. Yes, when they do speak English they
> are really speaking Russian.
I honestly do not know where you are getting this from. The movie is an english production, the crew is not real soviets...though many may be native speakers of the language.
When the transition was made it was total for the whole movie, that is, no dubbing.
In fact, all the officers, such as the navigations officer, not just Sam Niel and Sean Conery...were Americans.
Or at the very least, spoke good english.
If those scenes were filmed entirely for the benefit of Russians, than it would have all been filmed in russian, and the English dubbed over it. Or such.