Mosaic image of the sail of the USS Thresher (SSN-593) on the seabed at 2,600m. The USS Thresher was the first nuclear submarine lost at sea. Photo taken between 1963 and 1966.
The USS Thresher was undertaking dive trials when it encountered trouble. It’s not clear what exactly happened, but it is thought that either a pipe joint failed, flooding the engine room, or…
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