Discuss the significance of indigenous Anti-Submarine Warfare Shallow Water Craft for India's coastal security architecture.

Q. Discuss the significance of indigenous Anti-Submarine Warfare Shallow Water Craft for India's coastal security architecture. (15 marks, 250-350 words)

Anti-Submarine Warfare Shallow Water Craft (ASW-SWC) are small, agile warships built to hunt submarines in cluttered coastal waters where larger blue-water platforms cannot operate. The Mahe-class — INS Mahe (2025) and INS Malvan (2026) — makes this the fastest-growing tier of India's coastal security architecture.

Plugging a littoral capability gap - At roughly 78 metres and 1,100 tons, waterjet-propelled and armed with torpedoes, multifunctional anti-submarine rockets and advanced radars and sonars, these craft are purpose-designed for anti-submarine operations in coastal and shallow waters [2]. - They revive the names and roles of the Navy's erstwhile minesweepers, restoring a thinned-out inshore fleet [3].

Widening the coastal security toolkit - Their mandate extends beyond ASW to underwater surveillance, Low Intensity Maritime Operations (LIMO) and mine warfare [3][4] — precisely the sub-conventional threats highlighted after 26/11. - Distributed induction — INS Mahe into Western Naval Command, INS Malvan commissioned at Karwar — spreads persistent ASW cover across vulnerable coastal stretches [1][2].

The indigenisation dividend - With over 80% indigenous content, designed and built by Cochin Shipyard Limited, they demonstrate mastery of warship design, construction and systems integration [1]. - The eight-ship contract with CSL (2019), with keels laid through to the last vessel, sustains serial production, shipyard capacity and a domestic MSME vendor base [3][5].

Limitations - Eight craft remain thin for a 7,500-km coastline; numbers must scale. - Effectiveness depends on seamless coordination with the Coast Guard, marine police and coastal radar chain, and on sonar performance in acoustically noisy waters.

Indigenous ASW-SWCs thus convert coastal security from a patrolling function into a genuine underwater-domain-awareness capability, while deepening self-reliance in defence manufacturing. Sustaining the induction tempo, integrating these platforms with airborne and networked surveillance assets, and following through on the remaining hulls will let this class anchor the inshore tier of India's maritime defence — advancing Aatmanirbhar Bharat and India's SAGAR vision together.

(~320 words)

Sources: 1. Indian Navy Commissions INS Malvan, the Second of the Mahe-Class Anti-Submarine Warfare Shallow Water Craft (PIB) — commissioning at Karwar, over 80% indigenous content, CSL build 2. INS Mahe Commissioned – India's First Mahe-Class ASW Shallow Water Craft Joins the Western Naval Command (PIB) — dimensions, displacement, weapons/sensors, coastal ASW role, Western Naval Command 3. Simultaneous Launch of 'Mahe, Malvan and Mangrol', First Three Ships of ASW SWC (CSL) Project (PIB) — 2019 eight-ship MoD–CSL contract, LIMO and mine-laying roles, minesweeper name lineage 4. Indian Navy Set to Commission the Latest ASW Shallow Water Craft Malvan (PIB) — underwater surveillance and mine warfare mandate, waterjet propulsion 5. Keel Laying of Last Ship (BY 530) of ASW SWC (CSL) Project (PIB) — serial production progression across the class