One of the nice things, in addition to that powerful opening score, is that the film follows the book very closely with a few minor exceptions (the main one being the description of the silent propulsion system).
“It’s like a jet engine for the water. Goes in the front, gets squirted out the back so it’s very very quiet.” “Like how quiet?” “Doubtful sonar could even pick it up. And if it did, it would sound like whales humping or some kind of seismic anomaly, anything but a submarine.” - Sorry one of my top 5 movies and I can pretty much recite it from start to finish.
I like Sean Connery’s Russian accent. (do I really need a sarcasm tag?)