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PM commissions INS Dunagiri, INS Sanshodhak and INS Agray in Kolkata

3 min readNavy & Aircraft
Battle IAS current affairs title card: PM commissions INS Dunagiri, INS Sanshodhak and INS Agray in Kolkata (GS3 · Defence, 21 June 2026)
Battle Brief

On 21 June 2026 in Kolkata the PM commissioned three GRSE-built Navy platforms: INS Dunagiri (Project 17A Nilgiri-class frigate), INS Sanshodhak (Survey Vessel Large) and INS Agray (ASW shallow water craft). They are over 75% indigenous, with more than 200 MSMEs involved. The day was also World Hydrography Day and International Day of Yoga.

Fact File

Date
21 Jun 2026, Kolkata; Ministry of Defence
INS Dunagiri
5th Nilgiri-class (Project 17A) frigate; 2nd of class by GRSE
INS Sanshodhak
4th Survey Vessel (Large); hydrography/oceanography; 4 Survey Motor Boats
INS Agray
5th Anti-Submarine Warfare Shallow Water Craft; sonar, torpedoes, AS rockets
Builder
Garden Reach Shipbuilders & Engineers (GRSE); Warship Design Bureau designs
Indigenisation
over 75% indigenous content; 200+ MSMEs
In the news

Tri-commissioning of Dunagiri, Sanshodhak and Agray: what happened?

One ceremony, three jobs: a frontline frigate, a survey ship for charts and the blue economy, and a shallow-water sub-hunter. That mix is how the Navy fills war-fighting, hydrography and littoral gaps together.

  • Dunagiri: modular construction; integral helicopter capability.
  • Sanshodhak: precise hydrographic data; twin helicopter hangars; can be configured as a hospital ship; supports MAHASAGAR / Maritime Vision 2030 lines in the release.
  • Agray: waterjet propulsion; Combat Management System; littoral ASW and mine-warfare posture.
  • Together: HADR, anti-piracy, hydrographic surveys for partner nations, and evacuations listed among roles.
Back Story

What is Project 17A?

  • Nilgiri-class advanced stealth frigates.
  • Dunagiri is the fifth of the class and the second built by GRSE.
Back Story

Why commission a survey ship on World Hydrography Day?

  • 21 June is World Hydrography Day and International Day of Yoga.
  • Sanshodhak’s hydrographic and oceanographic suite fits the hydrography calendar.
By the numbers

What does each platform do?

Tri-commissioning, Kolkata, 21 Jun 2026
ShipClass / roleNotable fit
INS DunagiriP17A stealth frigateHelicopter-capable combatant
INS SanshodhakSurvey Vessel (Large)Hydrography; 4 SMBs; hospital-ship option
INS AgrayASW Shallow Water CraftSonar, torpedoes, AS rockets; waterjets
Why examiners care

Why does tri-commissioning of Dunagiri, Sanshodhak and Agray matter?

AngleWhat to note
DefenceFrigate, hydrography and littoral ASW in one induction.
IndustryGRSE + 200 MSMEs; over 75% indigenous content.
DiplomacyHydrographic support and HADR for the Indian Ocean neighbourhood.
Fault Lines

What are the challenges in tri-commissioning of Dunagiri, Sanshodhak and Agray?

  • Indigenisation above 75% still leaves an import slice on combat systems.
  • Survey and ASW crafts need matching shore and data networks to deliver value.
  • Fleet expansion must keep pace with training and maintenance.
Road Ahead

What should be done next on tri-commissioning of Dunagiri, Sanshodhak and Agray?

  • Continue P17A and ASW SWC deliveries.
  • Use Sanshodhak data for blue-economy and partner surveys.
  • Keep MSME depth in warship supply chains.
Exam Radar

What can Prelims ask on tri-commissioning of Dunagiri, Sanshodhak and Agray?

  • 21 Jun 2026 Kolkata: Dunagiri (P17A), Sanshodhak (SVL), Agray (ASW SWC).
  • GRSE-built; over 75% indigenous; 200+ MSMEs.
  • Sanshodhak: 4th SVL; Agray: 5th ASW SWC; Dunagiri: 5th Nilgiri-class.
Answer Lab

How to write about tri-commissioning of Dunagiri, Sanshodhak and Agray in Mains

Practice question (10 marks, 150 words): The June 2026 tri-commissioning of Dunagiri, Sanshodhak and Agray covers combat, hydrography and shallow-water ASW. How does this mix serve India’s maritime security and blue-economy goals?

  • Name the three platforms and roles.
  • Link P17A to surface combat; SVL to hydrography/MAHASAGAR; ASW SWC to littorals.
  • Note GRSE indigenisation and MSME base.
  • Add HADR and partner-survey diplomacy.
  • Conclude on balanced fleet design.

How to use this in Mains

GS-III Security; indigenisation of technology

  1. As per PIB (2026-06-21): the PM commissioned three indigenously designed and built platforms, INS Dunagiri, INS Sanshodhak and INS Agray, in Kolkata.
  2. Shipbuilding is being treated as a national mission, and it supports maritime domain awareness.
Quotable data point

The PM commissioned three indigenously designed and built platforms, INS Dunagiri, INS Sanshodhak and INS Agray, in Kolkata.

PIB: Defence: three platforms commissioned, 21 Jun 2026

Exam angle

UPSC

Prelims: ship classes.

Practice MCQs

Original practice questions (not PYQs).

Practice · UPSC

INS Dunagiri, commissioned in June 2026, belongs to

Answer (b) & explanation

PIB (Defence), 21 Jun 2026.

Practice · UPSC

INS Agray is best described as a

Answer (c) & explanation

PIB (Defence), 21 Jun 2026.

Quick questions

Questions students ask about this

Which three ships were commissioned in Kolkata on 21 June 2026?

INS Dunagiri, INS Sanshodhak and INS Agray.

What is INS Dunagiri?

The fifth Nilgiri-class stealth frigate under Project 17A, and the second of the class built by GRSE.

What is special about INS Sanshodhak's date?

It was commissioned on World Hydrography Day (21 June), matching its survey role.

Keep studying

Official source: PIB: Defence: three platforms commissioned, 21 Jun 2026

facts from cited sources only; faculty review pending