FUN FACT: The production didn't have access to a real Typhoon class submarine, so they built an above-the-waterline mock-up by getting a ship yard to turn a bunch of huge sea barges upside down, weld them together and add a conning tower and dressing it up. They did a pretty amazing job, really.
One of my favorite openings of all time. No music, no puns, no action. Just the sound of the cold Arctic wind blowing across the hills leading to a Russian chorus saying goodbye to their mother land in song as they set sail into the unknown future and into the arms of the sea. Epic....