Naval Facility Bermuda
Naval Facility Bermuda, or NAVFAC Bermuda, was the operational shore terminus for one of the Atlantic Sound Surveillance System (SOSUS) array systems installed during the first phase of system installation and in commission from 1955 until 1992. The true surveillance mission was classified and covered by "oceanographic research" until the mission was declassified in 1991. The system's acoustic data was collected after the facility was decommissioned until the system was routed to the central processing facility, the Naval Ocean Processing Facility (NOPF), Dam Neck, Virginia in 1994. The operational surveillance facility was often confused with the adjacent research facility, the Tudor Hill Laboratory, and its undersea sensors supporting research and development for Navy acoustic systems. That laboratory was the only such research and development facility with access to an operational surveillance facility. When that laboratory, then a detachment of the Naval Underwater Systems Center, was disestablished 30 September 1990 its facilities were assigned to the Naval Facility which was then decommissioned two years later. The Tudor Hill area in the British Imperial fortress colony of Bermuda had been one of the locations where the Bermuda Base Command (established by the United States to reinforce the Bermuda Garrison of the British