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KITTERY, Maine — A bell has tolled 129 times at the Portsmouth Naval Shipyard, once for each of the men who died aboard the submarine Thresher 50 years ago.
Hundreds of workers at the shipyard in Kittery, Maine, gathered Wednesday morning for a ceremony commemorating the anniversary of the tragedy.
The submarine began its final mission from the shipyard on the morning of of April 10, 1963. It was approximately 200 miles off the coast of Cape Cod, conducting sea trials.
The Thresher sank toward the ocean floor after losing power, until it imploded below crush depth into thousands of pieces.
A number of remembrances and ceremonies have been held in recent days honoring the crew.