In March of 1968 a Soviet submarine was lost with all hands 16,500 feet below the surface of the Pacific Ocean. In 1974 portions of the submarine were brought to the surface using a covert recovery system designed specifically for the mission. The story of the more than six years intervening is the story of Project AZORIAN, that is, the story of the MV Hughes Glomar Explorer. This endeavor ranks at the forefront of imaginative and bold operations. It combines immense size and scope, advancements with technology, complex engineering and testing, and a demanding mission scenario in an unforgiving marine environment. While some aspects of the CIA mission remain Top Secret, recently declassified documents allow this story to be told from its early beginnings with the loss of the submarine, until the final days when the recovery ship sailed on her last voyage. This hardcover version includes 36 figures and charts showing the details of the project including construction, maps, recovery vehicle, submersible, and target location.