Sound Surveillance System (SOSUS) was the original name for a submarine detection system based on passive sonar developed by the United States Navy to track Soviet submarines. The system's true nature was classified with the name and acronym SOSUS classified as well.

Just over 66 years ago, one of the Navy’s most secretive communities began. Its members went by the code word SOSUS, which means “Sound Surveillance System.” A new front line in the Cold War, they had one mission: FIND SUBMARINES.

The SOSUS system was very successful in detecting and tracking the noisy diesel and then nuclear Soviet submarines of the Cold War. The sailors operating the early SOSUS arrays also detected some sounds whose sources were at first unknown.

1 day ago · Origins of SOSUS. The modern era of sonar began in the 1920’s when there was a steady advance in applying underwater sound to practical needs. During this period, depth sounding by ships was...

SOSUS, the classified name, was established in 1952. The system became an exemplary Cold War tool. SOSUS arrays, along with nuclear submarines optimized for ASW and long-range maritime patrol craft, became the dominant tools in the U.S. Navy ASW posture in …

Nov 4, 2016 · During the Cold War, the U.S. Navy laid fixed networks of underwater hydrophones on the ocean floor called the “ Sound Surveillance System” (SOSUS) to detect Soviet submarines transiting...

• The SOSUS system is a highly complex passive multi technology acoustic surveillance system that has evolved with the evolution of technology. It played a major intelligence gathering role during the cold war providing accurate knowledge of the location of Soviet submarines.

Dec 22, 2017 · The Sound Surveillance System (SOSUS) codenamed Project Caesar, began in 1954 as a classified US programme to use an extensive network of hydrophones laid on the seabed to track Soviet submarines. The technology was successfully refined and gave NATO a great advantage over their underwater adversaries throughout the Cold War.

Since the early 1950s the Atlantic and Pacific oceans have been under the vigilence of SOSUS, with long acoustic sensors (hydrophones) installed across the ocean bottom at key locations. SOSUS has transitioned from single-beam paper displays to computer-based workstations for acoustic data analysis.

SOSUS, an acronym for Sound Surveillance System, is a chain of underwater listening posts located around the world in places such as the Atlantic Ocean near Greenland, Iceland and the United Kingdom — the GIUK gap, and at various locations in the Pacific Ocean.