The Vega S-200 was a long-range surface to air missile developed by the Soviets in the 1960s. Its primary targets were anticipated to be high altitude bombers. The missile had solid fuel boosters followed by a liquid fuel engines that could achieve an interception speed of around 5,000km/hour (Mach 4). Guidance was by a dedicated radar installation and a proximity fuse.
Installations typically had bunker storage for the missiles, connected by rail to 6 launcher sites. At its peak in the 1980s, there were around 130 launch sites of which one, visited by Sub Brit in 2002, was at Badingden.