Red October (fictional submarine) by the Soviet Navy, "Red October" manages to rendezvous with USS "Dallas" and the United States is able to engage in a complicated rescue plan. Along for the ride on "Dallas", and later on "Red October", is a part-time CIA analyst named Jack Ryan, who reads Ramius' intent and suggests setting up the rendezvous. The rescue plan results in the Soviet Navy's belief that the submarine has been destroyed. The Soviet Alfa-class attack submarine "Konovalov" discovers "Red October"'s survival, but is destroyed before it can report back that "Red October"'s sinking had been staged. Most of the officers defect with
The Hunt for Red October are many deviations, including "Red October" traveling up the Penobscot River in Maine to dry dock, and the "caterpillar drive" being described as a magnetohydrodynamic drive system, essentially, "a jet engine for the water". The film received mainly positive reviews from critics, holding an 87% rating from Rotten Tomatoes based on 66 reviews. It was the 6th top-grossing film of the year, generating $122 million in North America and more than $200 million worldwide in box office. In a 1991 interview, Clancy remarked of the film's success: "It was reasonably true to the spirit of the book, although the movie