Watch the movie.
Honestly, dredging through the book, The Hunt For Red October, was mind numbing. I always kept thinking the action in this series would be just right around the corner. But no, about 4/5 of the whole book is nothing but political maneuvering, and some character expose. At the very end, we're treated to a short, anti-climactic battle sequence.
The movie is far superior, the acting is top notch, little bits of comedy are thrown in, everything takes on a dramatization that just couldn't be felt in the book. Not to mention, the movie cuts the unnecessary fat from the book, giving you a great thriller without all the dry politicking.