Anti-Submarine Warfare (ASW)
Concept and Strategic Significance
Anti-Submarine Warfare encompasses all measures taken to detect, track, and neutralise enemy submarines. Submarines are the most potent asymmetric naval threat because they operate invisibly, can interdict supply lines, and in their nuclear-armed variant constitute a nation's second-strike capability. ASW is therefore a core competency for any navy seeking sea-lane control.
- Key ASW platforms include Maritime Patrol Aircraft (MPA) like the P-8 Poseidon/Neptune, surface ships with sonar and torpedoes, and hunter-killer (SSN) submarines.
- India's P-8I Neptune is the Indian Navy's primary MPA, acquired from the US (Boeing) under a Foreign Military Sale (FMS) — India operates 12 P-8Is with an option for additional units.
- P-8I capabilities include: magnetic anomaly detection, multi-static active coherent sonar buoys, Harpoon anti-ship missiles, and lightweight torpedoes.
- China's People's Liberation Army Navy (PLAN) operates the world's largest naval fleet by vessel count and has rapidly expanded its submarine force, including nuclear-armed Type 094 SSBNs.
● Tracked since March 17, 2026 · last seen July 29, 2026 · updates as the daily brief publishes
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