The Hunt for Red October (film) essentially revealed the use of gravimetry as a method of silent navigation in US submarines. Thought to be a billion dollar black project, the development of a full-tensor gravity gradiometer by Bell Aerospace was a classified technology at the time. It was thought to be deployed on only a few s after it was first developed in 1973. Bell Aerospace later sold the technology to Bell Geospace for oil exploration purposes. The last Typhoon-class submarine was officially laid down in 1986, under the name "TK-210", but according to sources was never finished and scrapped in 1990. The musical score of
The Hunt for Red October (film) morning, CIA analyst and former Marine, Jack Ryan, after consulting with Vice Admiral James Greer, briefs government officials on "Red October" and the threat it poses. The U.S. fears Ramius plans an unauthorized nuclear strike. They also learn that the bulk of the Soviet Navy has been deployed to the Atlantic to find and sink the renegade vessel. In the briefing, Ryan hypothesizes that Ramius instead plans to defect. He is ordered to rendezvous with the "Dallas" - still searching for "Red October" since their initial detection of it - to prove his theory. Meanwhile, Tupolev, though unable to track