The vessel gathered the essential geophysical data required for India to submit its claims for an extended continental shelf under the UN Convention on the Law of the Sea (UNCLOS). Tsunami Warning:
As the ship’s engines cool for the final time, its legacy lives on in every monsoon forecast that saves a farmer’s crop, in every tsunami warning that reaches a coastal village, and in every deep-sea mineral map that secures India’s future energy needs.
For over 25 years, Sagar Kanya was the flagship of India's oceanographic fleet, a true workhorse that helped advance the country's standing in marine science and global collaborations. However, with the vessel now over 40 years old, the Ministry of Earth Sciences has long recognized the challenges of maintaining an ageing fleet. Sagar Kanya Research Vessel
Legacy and importance: Sagar Kanya has been an important platform for building oceanographic capacity in India, training marine scientists and technicians, and producing datasets that inform understanding of regional ocean processes. As with many national research vessels of its era, it combined practical sampling capability with onboard analytical support, enabling a broad range of scientific investigations that advanced both fundamental oceanography and applied marine science.
Examined how ocean temperatures drive monsoon depressions. The vessel gathered the essential geophysical data required
Perhaps its most grueling voyages were to the "Furious Fifties" latitudes (50–60°S). Sagar Kanya undertook ten expeditions to the Southern Ocean to study the Antarctic Circumpolar Current, the largest ocean current on Earth. Data from these cruises revealed the rapid freshening of Antarctic bottom water due to ice sheet melting.
. It features advanced stabilized platforms, deep-sea winches, and sophisticated sonar systems like the multibeam swathe bathymetry system, which allows scientists to map the ocean floor with high precision. Its ability to endure long voyages—often exceeding 45 days at sea—makes it ideal for deep-sea exploration. Key Contributions However, with the vessel now over 40 years
After 38 years and (covering >1.5 million nautical miles), Sagar Kanya was formally decommissioned on April 29, 2021 at the Chennai Port. Reasons included:
April 13, 2026 Reading Time: 4 minutes