2 ms·
First built 70 years ago, it descended to the bottom of the Mariana Trench in 1960, and found the wreckage of the USS Thresher in 1963.
by pmcjones 3y ago
First built 70 years ago, it descended to the bottom of the Mariana Trench in 1960, and found the wreckage of the USS Thresher in 1963.