Anonymous ID: 66a858 June 27, 2019, 6:03 p.m. No.6860357   🗄️.is 🔗kun

>>6860119

 

What a great way to "give" your enemies secrets in plain sight.

 

https://slate.com/culture/2013/10/the-hunt-for-red-october-movie-revealed-classified-information-about-u-s-submarines-because-tom-clancy-knew-his-stuff.html

 

http://archive.is/SxI09

 

>How the Hunt for Red October Movie Revealed Classified Information About U.S. Submarines

 

>At one point in the book we learn that the Red October uses “a highly sensitive device called a gradiometer, essentially two large lead weights separated by a space of one hundred yards. A laser-computer system measured the space between the weights down to a fraction of an angstrom. Distortion of that distance or lateral movement of the weights indicated variations in the local gravitational field,” the book explains. “With careful use of gravitometers in the ship’s inertial navigation system,” Ramius “could plot the vessel’s location to within a hundred meters.”

 

>In fact, “no Soviet vessel actually carried such elaborate gear.” But something like it was in use by the U.S. Navy. “In the 1970s, driven by both navigation and missile launching requirements, the U.S. Navy spent hundreds of millions of dollars developing a system to measure gravity gradients,” as Robin Bell explains in a 1997 article for the Leading Edge, a geoscience journal. The U.S. system “was somewhat more complex than the fictional one Clancy installed on the Red October,” Bell explains. It was also classified. Using gravimetry, “the measurement of the strength of a gravitational field,” to pilot a submarine had serious benefits for covert operations. While “using sonar involved sending off sonic ‘pings’ that would reveal your location to any submarine in the near area,” a submarine “that could navigate using a gravimeter … would be able to, in effect, ‘run silent.’