NEC 23CQ-Submarine Combined Cryptographic Equipment Maintenance Technician
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Patch
USS Grayback (LPSS-574) Details
A second conversion began at the Mare Island Naval Shipyard in November 1967. The conversion was originally estimated at US$15.2 million, but grew to over US$30 million. She was re-classified from a guided missile submarine to an amphibious transport submarine with hull classification symbol LPSS on 30 August 1968
The conversion heightened her sail by ten feet, added two auxiliary tanks to the forward end of the engine room (increasing the length of the boat by 12 feet), and converted the missile chambers to carry 67 embarked troops and SEAL Swimmer Delivery Vehicles (SDVs), including a decompression chamber in the starboard hangar.
In June 1972, the Grayback carried a team of Navy SEALs into the coastal waters of North Vietnam as part of Operation Thunderhead. This was the last attempt during the Vietnam War to rescue American POWs held in North Vietnam.
Grayback painted orange for sinking
Grayback was decommissioned for the second time on 15 January 1984 at Subic Bay Naval Station in the Republic of the Philippines. After decommissioning, Grayback was sunk as a target on 13 April 1986 in the South China Sea.
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