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Garden Reach Shipbuilders and Engineers (GRSE) launched India's first indigenously built advanced Ocean Research Vessel, ORV Sagar Manthan, at its Rishi Bankim Shipyard in Kolkata on 9 September 2026. The 89.5 metre, 5,900 tonne vessel is being built for the National Centre for Polar and Ocean Research under the Ministry of Earth Sciences, and will eventually replace the 43 year old ORV Sagar Kanya as India's advanced oceanographic research platform. Union Minister Dr Jitendra Singh, who was chief guest at the launch, noted that the vessel was launched within two years of contract signing and about five months after its keel was laid. Once delivered by early 2028 at a cost of about Rs 840 crore, Sagar Manthan will be capable of underway multibeam and geophysical seismic surveys at depths of up to 6,000 metres in the Indian Ocean, Bay of Bengal and Southern Ocean.