First Ship of Survey Vessel to Indian Navy

  • Sandhayak (Yard 3025), the first of four Survey Vessel (Large) ships.
  • Built at Garden Reach Shipbuilders & Engineers (GRSE), Kolkata.
  • Delivered to the Indian Navy on 04 Dec 23.
  • The Contract for four Survey Vessels (Large) was signed on 30 Oct 18.
  • The Keel was laid on 12 Mar 19.
  • The ship was launched on 05 Dec 21.
  • Undergone a comprehensive schedule of trials in the harbour and at sea.


  • Build according to the rules of Indian Register of Shipping Classification Society.
  • Primary role: full-scale coastal and deep-water Hydrographic Survey of Port/ Harbour approaches and determination of navigational channels/ routes.
  • Zone of operation: maritime limits up to EEZ/ extended continental shelf.
  • Will collect oceanographic and geophysical data for defence and civil applications.
  • Will provide a limited defence.
  • Function as a Hospital ship during war/ emergencies.
  • Displacement of about 3400 tons and an overall length of 110 meters.
  • Fitted with state-of-the-art hydrographic equipment such as Data Acquisition and Processing Systems, Autonomous Underwater Vehicles, Remotely Operated Vehicles, DGPS long-range positioning systems, Digital side scan sonar etc.
  • Powered by two Diesel Engines.
  • Capable of achieving speeds over 18 knots.
Posted in Current Affairs.