Russia's Submarine Blunder: Kazan's Sonar Signature Compromised Near Cuba

 After the Russian Yasen-class submarine, Kazan, made an appearance in Cuba, initial excitement about its proximity to the US turned into regret among Russian experts. According to the Russian site Top War, this move is seen as a significant blunder, with Americans already mocking Russia. The site criticizes the decision, noting that sending the submarine into the American anti-submarine zone compromised its stealth advantage.

In Cuba, crowds gathered to see the Kazan up close, but this exposure meant the US and NATO could now detect the submarine more easily. The Atlantic is heavily monitored by American and NATO forces, using advanced detection systems in key areas like the Barents and Norwegian Seas, the Faroe-Icelandic Gap, and the Davis Strait. These systems, combined with sophisticated patrol aviation, make it nearly impossible for a Russian submarine to enter the Atlantic undetected.

Submarines are primarily detected through passive noise direction finding and active sonar methods. Passive systems pick up on low-frequency sounds, while active sonar involves sending out a signal that bounces off the submarine and returns to the receiver. Modern ships enhance detection capabilities with low-frequency emitters and towed sonar stations, making it hard for submarines to remain hidden.

However, detecting a submarine with another submarine is more complex, as Russian submarines have very low noise levels in stealth mode. Identifying an underwater target’s unique acoustic signature can help isolate it from background noise, crucial for long-distance detection.

Previously, the US lacked detailed acoustic data on the Kazan. But after its exposure near Cuba, advanced computer systems recorded its acoustic signature, allowing the US to identify and track it more efficiently. This shift in detection methods significantly disadvantages Russia in terms of submarine stealth capabilities.

The potential implications are severe. The US could launch a nuclear strike against Russia or China with minimal retaliation risk if they can neutralize Russian strategic submarines. This was demonstrated in June 2023, showing the importance of disabling Russia’s submarine fleet to prevent a retaliatory strike. Russian submarines often operate under the ice, complicating detection, but a detailed sonar signature would allow American submarines to locate and target them from a safe distance, even in challenging environments.