India, June 19 -- Maharatna company, Steel Authority of India Limited (SAIL), the largest steelmaking Public Sector Undertaking, has taken a step forward towards the country's self-reliance in the defence sector and import substitution. 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 today, June 18, 2025. SAIL has also catered to the entire requirement of special steel for the other seven ASW-SWC corvettes being built by Garden Reach Shipbuilders and Engineers (GRSE).Partnering India's march towards defence indigenization, SAIL has supplied entire special steel for this proje...