Anti-Submarine Warfare: The Role of Corvettes and Large Patrol Craft in the Bangladesh Navy

Anti-Submarine Warfare (ASW) is a critical pillar of the Bangladesh Navy’s (BN) maritime defence strategy, especially considering the strategic significance of the Bay of Bengal and the increasing sophistication of submarine threats in South Asia. As regional powers expand their underwater capabilities, Bangladesh must cultivate a robust ASW posture tailored to its littoral environment and operational needs. Corvettes and large patrol craft (LPCs) currently form the core of BN’s surface ASW force, providing flexible deployment options to secure its extensive maritime domain. This analysis presents a detailed examination of BN’s current ASW platforms, specifically their sonar and armament suites, within the context of the prevailing underwater threat landscape. It further evaluates planned capability enhancements and delivers recommendations designed to strengthen BN’s ASW effectiveness. The paper aims to inform naval planners and policymakers on practical, cost-effective pathways to upgrade BN’s ASW forces, balancing technological sophistication with operational pragmatism. Recognising the unique