U.S. Naval Security Group Activity (NSGA) Dupont, SC activated in August, 1942 and was disestablished on December 1, 1957. NSGA Dupont mission was radio intercept and direction finding (Station D). Personnel, mission and functions were transferred to NSGA Northwest, VA.
The city of Dupont was named for Commodore/Rear Admiral Samuel Francis DuPont, 1803-1865) U.S. Navy, who served as a Flag officer during the Civil War. Commodore Dupont commanded the South Atlantic Blockading Squadron in September of 1861.
Rear Admiral Dupont led the expedition that captured Port Royal, South Carolina on November 7, 1861 and became a national hero with this victory. Following the occupation of Hilton Head Island, he was directed by the Navy Department to attack Charleston with ironclads. Having little faith in success, he carried out a failed attack on Fort Sumter, April 7, 1863. Widely criticized, he was relieved of command on July 5, 1863. Following this failed attached, a dispute between DuPont and the Secretary of the Navy, Gideon Welles, as to the responsibility for this defeat, continued until DuPont’s death. He was in line for an appointment within the Navy Department, but died in Philadelphia of a respiratory ailment in June, 1865 before it came through. DuPont circle and fountain in Washington DC were named in his honor.
Note: CAPT George Paul McGinnis was the Commanding Officer of NSGA Dupont, 1950-1952.
Source: navycthistory.com
Station HYPO 
8 August 2017 at 20:24
There were still some buildings standing a few years back. I can’t remember exactly when, but I went down there and took some pictures for the Cryptolog. Might have been the year the NCVA reunion was hosted in Charleston.
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3 August 2021 at 17:36
I was stationed at a small station in South Miami Florida called Richmond, we only had working spaces, so they flew me up to Dupont for my 3rd an 2nd class exams, made both, this was back in 55 an 56. Was met by 1st class by the name if Baker who later retired as a master chief an resting in peace.
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