India’s third Arihant-class SSBN INS Aridhaman and fourth Nilgiri-class frigate INS Taragiri were commissioned on April 3 at Visakhapatnam by defence minister Rajnath Singh. Defence
INS Nilgiri, the first of seven P17A-class frigates being built for the Indian Navy, was launched at the Mazagon Dock Shipbuilders Ltd. (MDL) dockyard in Mumbai on September 28.