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Another Thresher Anniversary


Army.ca Legend
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The Thresher was lost 10 April 1963. A FOI request has been filed with the goal of getting 10 questions answered. Thresher is on eternal patrol with its 129 man crew.In their memory I hope the USN releases the sought after information.


The USS Thresher (SSN-593) was lost at sea on 10 April 1963 during its first deep dive test (DDT) after a nine-month post-shakedown availability (PSA) at Portsmouth Naval Shipyard (PNSY). It was the first and remains the world’s worst nuclear submarine disaster, killing all 129 people on board. The July 2018 Proceedings article “Declassify the Thresher Data” described contributing factors to the loss and rejected the Naval Court of Inquiry (NCOI) Report’s opinion there was major flooding before implosion.

It has been 57 years since the loss of the Thresher. Any information that was classified at the time of the ship’s loss should now pose no threat to national security. The Navy owes the public and itself a complete, transparent review of all the documentation surrounding this terrible disaster at sea. Information from the Thresher could still provide valuable lessons to current and future submariners and could also help the Navy avoid mistakes as it competes to maintain an edge over its current great power competitors.