What are the three ships with three different strategic roles that the Navy inducted

📌 Summary:

• The Indian Navy commissioned three indigenously built ships at Kolkata (June 21), with PM Modi presiding: INS Dunagiri, INS Sanshodhak and INS Agray — each with a distinct role (blue-water combat, hydrographic survey, and coastal anti-submarine warfare)
• All three were built by Garden Reach Shipbuilders & Engineers (GRSE), Kolkata, with over 75% indigenous content and the involvement of 200+ MSMEs — underscoring Atmanirbharta in defence shipbuilding
• INS Dunagiri: a stealth guided-missile frigate under Project 17A, armed with BrahMos surface-to-surface missiles and an MRSAM system, with sensors like MFSTAR radar, sonar and electronic-warfare suites
• INS Sanshodhak: a deep-water survey vessel (sea-bed mapping); INS Agray: an Anti-Submarine Warfare Shallow Water Craft (ASW SWC) for coastal submarine hunting

🎯 UPSC Relevance: GS3 — indigenous defence manufacturing, maritime/naval modernisation, Atmanirbhar Bharat in defence and the role of MSMEs in the defence supply chain.

📝 Prelims Facts:

• Project 17A: programme for next-generation stealth guided-missile frigates built in India
• Builder: Garden Reach Shipbuilders & Engineers (GRSE), Kolkata
• BrahMos: India-Russia joint-venture supersonic cruise missile; MRSAM: Medium-Range Surface-to-Air Missile
• "INS" prefix = Indian Naval Ship

🔑 Key Term: Project 17A — Indian Navy programme for advanced stealth frigates (follow-on to the Shivalik-class Project 17), featuring reduced radar signature and indigenous content.