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) Konovalov", had interiors in black with silver trim. American ships, such as "Dallas" and "Enterprise", had grey interiors. However, during one scene when "Dallas" goes to a higher alert status it was flooded with red light. Early filming was aboard USS "Reuben James" in the area of the Juan de Fuca Strait and Puget Sound in March 1989. The ship operated out of U.S. Coast Guard Station Port Angeles. The SH-60B detachment from the Battlecats of HSL-43 operated out of NAS Whidbey Island, after being displaced by the filmcrew. Most underwater scenes were filmed using smoke with a model sub