INS Nirupak (J20)

INS Nirupak (J20) is a hydrographic survey ship of the Indian Navy. It is part of the Sandhayak class, which are specifically designed for conducting hydrographic surveys in coastal and deep waters to produce nautical charts and provide crucial data for safe navigation. The ship's primary role is to map and chart underwater terrain, identify potential hazards, and gather oceanographic data. This information is critical for supporting maritime operations, coastal development, and scientific research. The "INS" prefix stands for Indian Naval Ship.

Nirupak is equipped with advanced survey equipment, including multi-beam echo sounders, side-scan sonars, and other specialized sensors, enabling it to collect detailed bathymetric data and create accurate nautical charts. The ship also carries a helicopter for aerial surveys and support operations.

The vessel is named "Nirupak," which is a Sanskrit word that roughly translates to "observer" or "assessor," reflecting its role in observing and assessing the underwater environment. The ship's hull number is J20.

The Sandhayak-class survey ships, including INS Nirupak, contribute significantly to India's hydrographic capabilities and play a vital role in ensuring safe navigation and maritime security in the Indian Ocean region and beyond. They regularly participate in joint exercises and humanitarian assistance missions. These ships are being replaced by the newer Sandhayak-class (New Generation) vessels.