In March 1987, five Soviet Victor-III class nuclear attack submarines initiated Operation Atrina, vanishing into the Atlantic Ocean. The United States Navy relied on SOSUS, a multi-billion-dollar underwater hydrophone network, to track Soviet vessels. However, utilizing advanced acoustic masking, tight formations, and thermal layers, the submarines completely bypassed American anti-submarine warfare defenses, surfacing just twelve miles from the US coast and exposing a massive intelligence failure.
In March 1987, five Soviet Victor-III class nuclear attack submarines initiated Operation Atrina, vanishing into the Atlantic Ocean. The United States Navy relied on SOSUS, a multi-billion-dollar underwater hydrophone network, to track Soviet vessels. However, utilizing advanced acoustic masking, tight formations, and thermal layers, the submarines completely bypassed American anti-submarine warfare defenses, surfacing just twelve miles from the US coast and exposing a massive intelligence failure.