US NavFac Chichi Jima, USS Ramsden DER 382

**US NavFac Chichi Jima** was a United States Navy facility established on Chichi Jima, one of the Bonin Islands, during the Cold War. Operated from 1957 until its closure in 1993, the facility was part of the Sound Surveillance System (SOSUS) network, playing a crucial role in undersea surveillance, anti-submarine warfare, and intelligence gathering in the Pacific region. **USS Ramsden (DER-382)** was an Edsall-class destroyer escort, commissioned in 1943, that served in World War II, the Korean War, and later in Cold War operations. In the 1960s, Ramsden was reclassified as a radar picket ship (DER), conducting early warning and surveillance missions, including patrols in support of installations like NavFac Chichi Jima, before being decommissioned in 1969.