What happened
On October 26, 2025 INS Sutlej successfully completed a joint hydrographic survey with the Mauritius Hydrographic Service, mapping an area of around 35,000 square nautical miles, the Ministry of Defence said. Conducted under the existing MoU between India and Mauritius, the survey will aid marine charting, coastal regulation, and long-term environmental planning, supporting Mauritius’ Blue Economy goals.
Why it matters
The mission also included training six Mauritian officials in modern hydrographic techniques and joint EEZ surveillance with the Mauritius National Coast Guard, boosting regional maritime security. This was the 18th such mission between the two nations, reaffirming their strong partnership and shared commitment to the MAHASAGAR vision..