newsbits mindmap notes


Sanshodhak launched.


  • It is the 4th of the Survey Vessels launched under the SVL (Survey Vessels Large) Project.
  • The name ‘Sanshodhak’ means ‘researcher’.
  • Features:
    • 110 m long
    • 16 m wide
    • Displacement: 3,400 tons
    • Hull is made from DMR 249-A steel- an indigenously developed steel from SAIL (Steel Authority of India Limited)
    • New generation hydrographic equipment
    • Capacity to carry:
      • 4 Survey Motor Boats
      • An integral helicopter
    • > 80% indigenous content by cost


  • These vessels are to replace the existing ships of the Sandhayak Class.


  • Will be undertaking hydrographic surveys- both coastal and deep-water- of ports and navigational channels.
  • Will be collecting oceanographic and geophysical data for purposes- civilian and defence.
  • Secondary role include:
    • Limited defence capabilities
    • HADR
    • Hospital ship


  • Built by L&T/ GRSE.
    • The contract for building 4 SVL ships was concluded between the Defence Ministry and GRSE (Garden Reach Shipbuilders & Engineers), Kolkata, in 2018.
    • The 1st 3 vessels are:
      • Sandhayak- launched in 2021
      • Nirdeshak- launched in 2022
      • Ikshak- launched in 2022
  • Built for the Indian Navy.


  • Launched at Kattupalli, Chennai.


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