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Anjadip and Sanshodhak UPSC NOTE


  • It is the third Anti-Submarine Warfare Shallow Water Craft (ASW-SWC).

  • Built by Garden Reach Shipbuilders & Engineers (GRSE) for Indian Navy.

  • The ship has been named Anjadip to signify the strategic maritime importance accorded to the island of Anjadip, located off Karwar.

    • The island is connected to the mainland by a breakwater and is part of INS Kadamba.

  • The 'Arnala' class of ships built by GRSE would replace the current 'Abhay' class of Anti-Submarine Warfare Corvettes of the Navy.

  • They are designed to undertake anti-submarine operations in coastal waters, low intensity maritime operations, subsurface surveillance among others.

Anti-Submarine Warfare Shallow Water Craft (ASW-SWC):

  • The ASW-SWC corvettes, are a class of anti-submarine warfare (ASW).

  • Vessels currently being built for the Indian Navy, by Cochin Shipyard (CSL) and Garden Reach Shipbuilders & Engineers (GRSE).

  • They were conceived as a replacement to the ageing Abhay-class corvettes of the Indian Navy.

  • They are designed to undertake ASW duties – including subsurface surveillance in littoral waters, search-and-attack unit (SAU) missions and coordinated anti-submarine warfare operations with naval aircraft.

  • They were also designed to provide secondary duties – including defense against intruding aircraft, minelaying and search-and-rescue (SAR).

  • Equipped with sophisticated sensors and ordnance, the vessels also possess the capabilities to interdict and destroy subsurface targets – primarily hostile submarines, within the vicinity of coastal waters.

  • A total of 16 vessels are being built for the Indian Navy, jointly by CSL and GRSE under the Make in India initiative.

  • The Indian Navy plans to have all 16 vessels in active service by 2026.


  • ‘Sanshodhak’, the fourth of four ships of Survey Vessels (Large) (SVL) Project, being built by L and T/ GRSE for Indian Navy.

  • The ship named ‘Sanshodhak’, meaning ‘Researcher’, signifies the primary role of the ship as a Survey Vessel.

  • SVL ships will replace the existing Sandhayak Class survey ships, with new generation hydrographic equipment, to collect oceanographic data. 

  • The Survey Vessel (Large) ships are 110 m long, 16 m wide with a displacement of 3,400 tons.

  • The hull of these ships is made from indigenously developed DMR 249-A steel manufactured by Steel Authority of India Limited.

  • Capability to carry four Survey Motor Boats and an integral helicopter.

Survey Vessels (Large) (SVL) Ships:

  • The primary role of the ships would be to undertake full scale coastal and deep-water hydrographic surveys of Ports and navigational channels. 

  • The ships would also be deployed for collecting oceanographic and geophysical data for defence as well as civil applications. 

  • In their secondary role, the ships are capable of providing limited defence, HADR, and can serve as Hospital ship during emergencies.



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Learnerz IAS | Concept oriented UPSC Classes in Malayalam: Anjadip and Sanshodhak UPSC NOTE
Anjadip and Sanshodhak UPSC NOTE
Learnerz IAS | Concept oriented UPSC Classes in Malayalam
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