Defence minister Nirmala Sitharaman commissions INS Kiltan into Indian Navy, all you need to know Defence minister Nirmala Sitharaman commissions INS Kiltan into Indian Navy, all you need to know INS Kiltan, An Indigenously-built Anti-submarine Warfare Stealth Corvette Will Be Commissioned To The Indian Navy By The Defence Minister Nirmala Sitharaman At The Naval Dockyard Kolkata. News Nation Bureau | Edited By : Shambhudeep Hore | Updated on: 16 Oct 2017, 11:12:39 AM New Delhi : INS Kiltan, an indigenously-built anti-submarine warfare stealth corvette will be commissioned to the Indian Navy by the Defence Minister Nirmala Sitharaman at the Naval Dockyard Kolkata. The anti-submarine warfare stealth corvette was designed by Indian Navy's in-house organisation Directorate of Naval Design and built by Garden Reach Shipbuilders & Engineers (GRSE) in Kolkata. Here are the five important points you need to know.