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USS Threasher - 9 April 1963

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USS Thresher - 9 April 1963

50 Years Later: The Legacy of USS Thresher

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A child?s drawing of a lost submarine rests behind Plexiglas in a back corner of the National Museum of the Navy in Washington, D.C., seemingly out of place amid massive ship models and aircraft dangling from the ceiling.
?USS Thresher/ Bruce Harvey/ crayon,? reads its art-museum-style description. ?The young son of Commander John Harvey, skipper of Thresher, drew the boat on the ocean floor after hearing of its loss. Bruce?s father and 128 other men died when the submarine sank off the New England coast.?

Thresher (SSN-593), at the time the Navy?s fastest and most powerful submarine, represented a leap forward in the Cold War fight against the Soviets. When she put to sea for the last time in April 1963, she represented the bleeding edge of undersea warfare.

?This was just incredible technology,? Bruce Harvey told USNI News in a recent telephone interview. ?These guys were the first. . . . It was just like the astronaut program, if you were there the first five years, you saw something different from what everybody else saw.?

Bruce?s father, Lt. Cmdr. John Harvey, was part of that elite community. The elder Harvey served in the first nuclear boat, USS Nautilus (SSN-571), on her 1958 polar expedition.

Nautilus proved to the world?and the Soviets?that the only limit to the range of a nuclear submarine was the amount of food the crew needed.
Thresher was designed to be better.

?Thresher was the fastest, deepest diving, most capable submarine in the word,? Rear Adm. David Duryea, Naval Sea Systems Command?s, deputy commander for undersea warfare told USNI News in a recent interview. ?This was the pride of the U.S. Navy.?

On 9 April 1963, Thresher put to sea to conduct a series of sea trials following an overhaul accompanied by USS Skylark (ASR-20), a Penguin-class submarine rescue ship, according to the 1975 book The Thresher Disaster.

The next morning, Thresher descended to 1,000 feet in a deep-diving test.
Forty-six minutes after reaching test depth, things began to go very wrong.
Thresher suffered a mechanical failure and Harvey?s attempts to bring the boat to the surface failed.

Four minutes after Skylark learned there were problems, Thresher sent her last garbled transmission, ?exceeding test depth.? One minute later Skylark detected a noise that shared the characteristics of an implosion.
The next day, Navy officials announced the ship was lost.

.../cont/...​
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Edit: Fixed typo in title
 
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I know it's been along time since '63, and I've slept since then. But.....I seem to remember that the implosion was caused by a torpedoe? Was there any identifying characteristic when they finally raised the boat?

Realize that 1963 and 2013 are worlds apart in information ability/disclosure, and there would have been a sound had a torp skewered the Thresher. Maybe hit by another sub (Russkie?). If there's anyone that can help me recollect, please do.

:gobucks3::gobucks4::banger:
 
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IIRC it was determined that there was an internal leak that shorted out the electrical system & shut down the reactor causing a loss of control. It happened during testing at the edge of the depth envelope and she quickly sank to crush depth.

There are of course a number of conspiracy theories, including being deliberately sunk by the Soviets.
 
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Why Did the USS Thresher Sink? Finally, the Navy Is Being Forced to Tell Us

The submarine mysteriously went down in 1963, killing everyone on board. Thanks to a lawsuit, we're about to learn why.


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A retired U.S. Navy submarine commander has won a lawsuit forcing the Navy to release its report on what happened to the USS Thresher, a nuclear-powered attack submarine that sank during diving tests in 1963. The loss of the submarine has never been fully explained, and the Navy has never released the report on the sub’s sinking.
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Capt. Jim Bryant, a retired Navy submarine officer, wanted to see the Navy’s 1,700-page report on the Thresher’s sinking, but the Navy refused to release it. So Bryant, Stars and Stripes reports, sued the Navy, and last month a federal judge ordered the service to release it in 300-page chunks.

The Navy has long been extremely protective of the report. The Navy submarine force is notoriously tight-lipped; submariners say the nickname “the silent service” not only applies to the quiet nature of subs, but the secretive nature of the sub community as a whole.

The service first said it would release the Thresher report in 1998, but released only 19 of 1,700 pages, claiming that keeping it classified was to protect serving submarine crews. The problem with that explanation? The accident happened during normal dive tests. More than 50 years have passed since the sinking, and the submarine’s technology is obsolete.
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The Navy will begin releasing the Thresher report in segments on May 15 and will continue until Oct. 15.

Entire article: https://www.popularmechanics.com/military/navy-ships/a31351061/why-did-uss-thresher-submarine-sink/
 
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