Admittedly the character Chekov, a bridge officer on the Enterprise, although Russian in his upbringing, is played by a
During a scene in Star Trek IV, Chekov and Uhura are walking the streets of San Francisco in "our" time. Knowing that it is a navy harbor, they are looking for a ship with a nuclear reactor. Chekov walks up to a cop doing his beat and point-blank asks him where the nuclear "wessels" are. The cop looks at him puzzled. Chekov repeats himself, carefully enunciating the words: nu-cle-ar wes-sels. Finally, after some moments of this confusion they do get some information (I believe from someone else). Trust me, everything eventually turns out all right. But "wessels"?
Chekov's difficulty in pronouncing the "v" sound implies that it is nonexistent in Russian. But that isn't so: it is actually very common. Ironically, it is the "w" sound that Chekov keeps saying in its place that is relatively rare in Russian. But still, if you didn't know anything about Russian you wouldn't have any reason to suspect this. Walter Koenig pulled a fast one on us, I think, and got away with it.
But then again, maybe I'm missing something here. If so, will someone qualified with a Russian background explain a native speaker's tendency to substitute a sound rare in his own language for one that is common?