Answer: Track submarines and ships
Notes: India and the U.S. agreed to co-produce sonobuoys for the Indian Navy's Undersea Domain Awareness (UDA). Sonobuoys are electro-mechanical acoustic sensors used to detect submarines and ships underwater. They are dropped by naval helicopters or aircraft, deploy automatically upon hitting water, and use inflatable systems for surface communication. Sensors descend to a specific depth to relay underwater acoustic data. Sonobuoys can be used in active or passive modes for tracking. Deploying multiple sonobuoys in a pattern allows precise location tracking of submarines, enhancing naval capabilities.
