The Hunt for Red October (film) intentions. The Soviet ambassador informs the U.S. government that Ramius is a renegade, and asks for help in sinking "Red October". That order is sent to the U.S. fleet, including "Dallas", which has found the Soviet submarine. Ryan, however, is convinced that Ramius plans to defect with his officers and convinces Mancuso to contact Ramius and offer assistance. Ramius, stunned that the Americans correctly guessed his plan, accepts. He then stages a nuclear reactor "emergency", ordering his crew to abandon ship. After a U.S. frigate is spotted, Ramius submerges. Meanwhile, Ryan, Mancuso, and Jones come aboard via a rescue sub,
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