Over the past centuries, humans have been curious about the depths of oceans. But even today, we know really little of this seafloor.
And India took a significant step to explore the deep sea and research its biodiversity.
Recently, on 9th of September, 2026, Garden Reach Shipbuilders & Engineers (GRSE) unveiled an indigenous Ocean Research Vessel (ORV). It was built to fortify the ocean research capabilities and create a space for our scientists to study the sea.
GRSE is located in Kolkata and supports the National Centre for Polar and Ocean Research (NCPOR). Around ₹840 crore was invested in this project under the government’s Deep Ocean Mission.
A Ship Built to Explore the Unknown
While traditional ships were made for navy defence and transportation, Sagar Manthan is taking a different route. It’s more like a floating scientific laboratory.
This 89.5-metre-long research vessel enables our scientists to study marine life on the seabed, examine ecosystems, and potentially discover new species and habitats.
This giant vessel has been equipped with all the resources to support advanced underwater operations, which include the implementation of specialised underwater transport such as Autonomous Underwater Vehicles (AUVs) and Remotely Operated Vehicles (ROVs).
These types of technologies allow scientists and marine biologists to examine the parts where human access is formidable.
Exploring Depths of Up to 6 Kilometres
The best capability of Sagar Manthan is its immense support for research operations and all information for deep ocean exploration.
The vessel is designed to support scientific missions at depths of up to 6,000 metres. This will help India establish a big network to cater to different sea regions and coasts. Valuable data will be generated from this research programme, helping strengthen India’s position in deep-sea research.
From geological formations to marine biodiversity, this research will cover it all. Scientists will work on analysing the constantly changing climate patterns and ocean resources.
Its research capabilities will extend beyond the Indian Ocean, including operations in challenging environments such as the Southern Ocean and areas connected to Antarctic research.
Why Sagar Manthan Matters for India
The launch of Sagar Manthan will open many doors for the nation at this very important time when nations across the world are already investing their funds, resources, and efforts in ocean science.
Oceans cover more than 70% of Earth’s surface, yet much of their ecosystem remains unexplored. Deep-sea research can help countries understand:
- Climate change and changing ocean patterns
- Marine biodiversity and ecosystems
- Seabed geology and mineral resources
- Sustainable use of ocean resources
For India, the vessel will strengthen scientific independence and reduce reliance on foreign research platforms.
A New Chapter Under India’s Deep Ocean Mission
Sagar Manthan is part of India’s larger ambition to explore and understand the deep ocean through the Deep Ocean Mission, which focuses on marine technology, ocean exploration and sustainable resource utilisation.
The mission also includes efforts such as developing advanced underwater exploration technologies and studying resources found deep beneath the ocean floor. ‘Built in India, for India’s Future’, this launch also highlights the growing capabilities of Indian shipbuilding.
GRSE, which has traditionally been known for naval ship construction, is expanding its expertise into specialised research vessels. The launch of Sagar Manthan reflects India’s push towards self-reliance in advanced maritime technology.
The vessel was launched just five months after its keel-laying ceremony, demonstrating GRSE’s ability to achieve major construction milestones efficiently.
Conclusion
Sagar Manthan is more than just a ship. It represents India’s ambition to explore the unknown, understand its oceans, and build world-class scientific capabilities. A vessel not designed for conflict, but for discovery. A ship that will help India answer one of the biggest questions of our planet: What secrets are still hidden beneath the world’s oceans?
