Naval Ocean Processing Facility

The **Naval Ocean Processing Facility (NOPF)** is a specialized shore-based unit integral to the United States Navy’s undersea surveillance mission. Established in the late 20th century, NOPF units process and analyze data collected from the Sound Surveillance System (SOSUS) arrays and other underwater acoustic sensors. These facilities have played a critical role in anti-submarine warfare, particularly during the Cold War, by detecting and tracking submarine movements in strategic maritime regions. Over time, NOPFs have adapted to new technologies and evolving threats, continuing to provide vital acoustic intelligence and situational awareness to fleet commanders and allied forces.