Wreck of USS Thresher (SSN-593) - Portsmouth, NH
Posted by: Groundspeak Premium Member Mountain_Wanderer
N 43° 04.409 W 070° 46.074
19T E 356071 N 4770491
Quick Description: "Thresher's deep-dive trials southeast of Cape Cod, Massachusetts, had come to a cataclysmic end and all 129 men aboard perished in 8,400 feet of water."
Location: New Hampshire, United States
Date Posted: 11/2/2008 2:56:41 PM
Waymark Code: WM52XP
Published By: Groundspeak Premium Member silverquill
Views: 28

Long Description:
"Five minutes prior to the implosion, Thresher had radioed that it was having minor problems. Skylark received several fragmentary, garbled messages, followed by silence. Moments later the chilling sounds of a submarine breaking apart and imploding were heard.

According to U.S. military reviews of the accident, the most likely explanation is that a piping joint in a sea water system in the engine room gave way. The resulting spray shorted out electronics and forced an automatic shutdown of the nuclear reactor.

Creaking Death

When the accident occurred, Thresher was near its maximum test depth, which, though classified, was probably around 1,300 feet (396 meters). Most submarines are built to survive down to a “crush depth,” which can be 20 to 35 percent greater than their maximum test depth. However, without the reactor, the sub would not have had enough power to stop itself from sinking to the bottom.

As they sank, the men aboard would have heard piping and fittings giving way. They would have listened as the ship’s hull creaked and groaned, until it finally, deafeningly gave way to massive water pressure. All lives were likely extinguished within a matter of seconds." (http://www.nationalgeographic.com/k19/disasters_detail2.html- Source)

The monument is located in Portsmouth at Albacore Park where you can tour a submarine.
Disaster Date: 04/10/1963

Memorial Sponsors: Albacore Park

Disaster Type: Technological

Relevant Website: [Web Link]

Date of dedication: Not listed

Parking Coordinates: Not Listed

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