Naval Ocean Processing Facility

• Cold War Origins: The Naval Ocean Processing Facilities (NOPFs) were established during the Cold War as part of the United States Navy’s strategy to track Soviet submarines using the Sound Surveillance System (SOSUS), a network of undersea listening devices. • Global Network: NOPFs are located in strategic locations, including Dam Neck, Virginia (NOPF Dam Neck), and Whidbey Island, Washington (NOPF Whidbey Island), with previous facilities in the UK and elsewhere, forming a global undersea surveillance network. • TOP SECRET Operations: For decades, the very existence and functions of NOPFs and SOSUS were highly classified. Their role was so secret that even many Navy personnel were unaware of the details. • Whale Songs and Submarines: Analysts at NOPFs became experts in distinguishing submarine noises from biological sounds such as whale songs, leading to unexpected contributions to marine biology and oceanography. • Contribution to the Cuban Missile Crisis: SOSUS operators, including those at NOPFs, played a critical role in tracking Soviet submarines during the Cuban Missile Crisis in 1962, providing vital intelligence to US leadership. • Technological Advances: NOPFs pioneered the use of advanced sonar signal processing, including the use of computers to filter, analyze, and classify underwater sounds, long before such technology was common elsewhere. • Transition to SURTASS: After the Cold War, fixed SOSUS arrays were supplemented by mobile Surveillance Towed Array Sensor System (SURTASS) vessels, with NOPFs adapting to process data from both sources. • Environmental Monitoring: With the end of the Cold War, some NOPF resources and expertise were shifted to monitoring oceanographic and environmental data, assisting in earthquake and tsunami detection. • International Collaboration: NOPFs have worked with allied navies, sharing technology and information, notably with the United Kingdom and Canada, strengthening NATO undersea surveillance capabilities. • Declassification and Legacy: The existence of SOSUS and NOPFs was declassified in 1991, leading to public recognition of their role in undersea warfare and their continuing contributions to national security and science.