New Delhi, June 19 -- The requirement of special steel for India Navy's ship INS Arnala was wholly supplied by Maharatna Public Sector Undertaking (PSU) Steel Authority of India Limited (SAIL), taking a step forward towards the country's self-reliance in the defence sector and import substitution, the Ministry of Steel said in an official statement on Thursday.

"SAIL supplied the entire requirement of special steel for India's first indigenously designed and built Anti-Submarine Warfare Shallow Water Craft (ASW-SWC), 'INS Arnala', which was commissioned into the Indian Navy on June 18, 2025," the ministry's statement read.

The Maharatna PSU also catered to the entire requirement of special steel for the other seven ASW-SWC corvettes bei...