Left to Right: Dr. Mackenzie, scientist from the Navy Electronics Lab and LCDR Donald L. Keach, USN, officer in charge of the Navy bathyscaph Trieste are shown inside the sphere during a deepwater dive in search for the USS Thresher (SSN-539) which sank
Categories: Ships and Submarines
 
 
Thank you to the Mario Family Foundation for enabling the digitization of the U.S. Naval Institute’s Photo Archive. The physical photos in the Photo Archive are stored in the Mildred M. Mario Photo Archive Room located at the U.S. Naval Institute’s Headquarters in Annapolis, MD.

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