Ah, screw it ;-) It's about series, TV show about Navy is not Navy. But it is one of a few ways that general society could learn about Navy, and usually learn wrong. Forget it. Maybe somebody someday somehow will manage to create the honest story about Navy that will be clear and loud message to ordinary people, but I'm afraid the war is needed for this to be possible, as usually had been in the past.
Aside, the only lessons that could be of some value from Russian side are from below the water. But neither I nor my wife are submariners (always thought that it's better to be drowning seeing the water surface from above), and this forum is not proper place for it.