The crazy CIA ship that became an engineering historical landmark

This is the Hughes Glomar Explorer, a ship that's as important to the history of engineering as it is to the history of insanely crazy Cold War CIA schemes.

In 1970s, the CIA used this ship to capture a sunken Russian nuclear submarine — i.e., lifting a 2000-ton object from a depth of three miles to the surface. It was the most expensive intelligence operation ever and it only kind of worked.

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