I first read this book when I picked it up as a mass market paperback at the grocery store in the 90s when I was going on a beach vacation. I subsequently watched the movie later because I had read the book.
I think my memory of the movie clouded my memory of the book, since it elides so much of what Junger does in the book, which I reread as a book on tape. What Junger does is teach the reader about fishing on the Atlantic and weather patterns. Neither are sexy, so he uses the story of the ship that disappeared, the Andrea Gail, as a hook into these subjects.
What Junger also did was dissuade me from becoming a fisherman - years before the deadliest catch.