Kolkata-primarily based defence shipyard Garden Attain Shipbuilders & Engineers (GRSE) signed a Rs six,311-crore contract with the defence ministry on Monday to make eight anti-submarine warfare shallow water craft (ASWSWCs) for the Indian Navy.

In parallel, Kerala state shipyard, Cochin Shipyard will make a further eight ASWSWCs for the identical price tag. These 16 vessels are becoming constructed in two shipyard simultaneously to shorten the delivery period.

The ASWSWCs will fill a worrying capability gap in the navy: the capacity to detect enemy submarines in the Arabian Sea, exactly where the unusually shallow sea bed reflects sonar signals emitted by submarine hunting vessels, masking the signals reflected off the enemy submarine, and generating it complicated to detect.

The ASWSWCs are equipped with sophisticated sonar, with an algorithm that differentiates the signals reflected off the enemy submarine from these bouncing off the sea bed.

These vessels will also have the capacity to sprint quickly for brief bursts in order to keep speak to with a submarine it detects as effectively as sophisticated information hyperlink networks for sharing facts about the enemy submarine with friendly anti-submarine warships and aircraft.

GRSE says these vessels can also be applied for search and rescue operations and, in their secondary part, for laying and detecting underwater mines.

With the Pakistani Navy currently possessing 3 sophisticated French submarines and in the course of action of procuring 4 Chinese submarines, the navy has been pushing for ASWSWCs. Of even higher concern is Pakistan’s fleet of an estimated six miniature Italian submarines — referred to as the Chariot — which can operate extremely successfully in shallow waters.

“It was a massive enhance for group GRSE when the shipyard was declared profitable in the competitive bid for style, building and provide of eight ASWSWCs,” stated the shipyard on Monday, noting that this was a competitive procurement in which all public and private shipyards had been permitted to full.

Following the ASWSWC tender was issued in April 2014, it has taken 5 years to sign a contract. The very first vessel is to be delivered inside 42 months from the contract, that is by October 2022. Following that, GRSE will have to provide two far more ASWSWCs annually, finishing delivery by April 2026.

GRSE is simultaneously creating 3 stealth frigates for the navy below Project 17A, finishing an order for 4 ASW corvettes below Project 28, though also creating a variety of other vessels — landing craft, quickly patrol vessels and survey vessels for the navy and coast guard.

The ASWSWCs displace 750 tonnes, can sprint at 25 knots and are crewed by a complement of 57 sailors.