SF Prep Notes

INS Sutlej completes 18th India-Mauritius joint hydrographic survey

The Indian Navy said on 26 October 2025 that INS Sutlej has completed a joint hydrographic survey with the Mauritius Hydrographic Service covering about 35,000 square nautical miles.

Summary

The Indian Navy said on 26 October 2025 that INS Sutlej has completed a joint hydrographic survey with the Mauritius Hydrographic Service covering about 35,000 square nautical miles, under the existing India-Mauritius MoU. The survey will support marine charting, coastal regulation, resource management and Mauritius's Blue Economy goals. Six personnel from Mauritian ministries trained on board, and the ship also carried out joint EEZ surveillance and anti-piracy patrols with the Mauritius National Coast Guard. The survey fairsheet was handed over in the presence of Indian High Commissioner Anurag Srivastava. It was the 18th joint hydrographic mission between the two countries and is aligned with India's MAHASAGAR vision.

Key facts

Announced
26 Oct 2025, Indian Navy
Ship
INS Sutlej
Partner
Mauritius Hydrographic Service
Area
~35,000 sq nautical miles
Mission number
18th joint India-Mauritius hydrographic mission
Also
Joint EEZ surveillance & anti-piracy patrols; 6 Mauritian personnel trained

Practice MCQs 2 questions

Q1 Advanced

INS Sutlej's joint hydrographic survey with the Mauritius Hydrographic Service (October 2025) covered approximately what area?

Show answer

Correct answer: C — 35,000 square nautical miles

PIB: the survey covered an extensive area of approximately 35,000 square nautical miles.

Q2 Advanced

INS Sutlej's October 2025 deployment marked which joint hydrographic mission between India and Mauritius?

Show answer

Correct answer: D — 18th

PIB: this deployment marks the 18th joint hydrographic mission between India and Mauritius.

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