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In a significant stride towards bolstering coastal surveillance and maritime security, the Indian Navy is set to equip sixteen Shallow Crafts with the advanced Hull-mounted Sonar ABHAY. Developed by the Naval Physical and Oceanographic Laboratory (NPOL), ABHAY is poised to enhance the capabilities of these vessels, promising a new level of effectiveness in coastal patrolling and sub-surface surveillance.

The Garden Reach Shipbuilders & Engineers Ltd (GRSE) in Kolkata and the Cochin Shipyard Limited (CSL) in Kochi are at the helm of this vital project.

ABHAY is a dynamic combination of active and passive sonar technology, making it a versatile tool for coastal surveillance and patrol vessels. It equips the vessels with the ability to conduct comprehensive sub-surface surveillance in coastal waters, effectively safeguarding against potential threats beneath the waves.

The hull-mounted sonar system’s active-cum-passive capabilities enable it to emit sound waves into the water and subsequently analyze the echoes returned. This method enables the detection of underwater objects, vessels, and other entities, making it an invaluable tool for coastal patrol operations.

The vessels themselves, measuring 77.6 metres in length and 10.5 metres in width, are powered by three diesel-driven water jets. This propulsion system not only ensures efficient movement but also lays the foundation for swift response and agile manoeuvrability in challenging coastal waters.

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