Key Facts

Ships Commissioned

  • INS Dunagiri: Project 17A stealth guided-missile frigate
  • Largest and most heavily armed among the three vessels
  • Designed for blue-water operations (can operate far from coast)
  • Equipped with BrahMos surface-to-surface missiles
  • MFSTAR radar system
  • Medium Range Surface-to-Air Missile (MRSAM) system
  • Advanced sonar and electronic warfare systems
  • Anti-submarine weapons
  • INS Sanshodhak: Survey Vessel Large (SVL)
  • For coastal and deep-water hydrographic surveys
  • Maps seabed features, water depths, navigational routes
  • Surveys approach channels to ports
  • Collects oceanographic data
  • Equipped with Autonomous Underwater Vehicles (AUVs)
  • Remotely Operated Vehicles (ROVs)
  • Multi-beam echo sounders
  • INS Agray: Arnala-class Anti-Submarine Warfare Shallow Water Craft
  • Designed for littoral/coastal waters
  • Detects and engages submarines in shallow waters
  • Lightweight torpedoes
  • Indigenous anti-submarine rocket launchers
  • Shallow-water sonar systems

Builder

  • Garden Reach Shipbuilders & Engineers (GRSE), Kolkata
  • Indigenous content: More than 75%

Background and Context

Indigenous Shipbuilding Ecosystem

  • GRSE is a premier shipyard under the Ministry of Defence
  • Part of India's push for defence indigenization under Make in India and Atmanirbhar Bharat
  • Indigenous content of 75%+ demonstrates significant progress in domestic shipbuilding technology

Project 17A Frigates

  • INS Dunagiri is part of Project 17A (next-generation stealth frigates)
  • Features reduced radar cross-section for stealth operations
  • Integrates advanced weapons and sensor suites

Strategic Significance

Maritime Capability Expansion

  • Blue-water operations: INS Dunagiri extends India's reach in distant seas
  • Maritime Domain Awareness: INS Sanshodhak provides critical hydrographic data
  • Littoral Defence: INS Agrray strengthens coastal and shallow-water security

Indian Ocean Region Dynamics

  • Growing strategic competition in the Indian Ocean
  • China's expanding naval presence (String of Pearls strategy)
  • Increasing naval activities by Pakistan
  • Need for comprehensive maritime coverage

Operational Coverage

The ships together provide:

  1. Surface warfare capability (INS Dunagiri)
  2. Sub-surface detection (INS Agrray)
  3. Hydrographic survey support (INS Sanshodhak)

Related Initiatives

  • Maritime Capabilities Perspective Plan: Long-term naval capability building roadmap
  • Naval Indigenization Plan: Reducing dependence on foreign suppliers
  • Defence Research and Development Organisation (DRDO): Indigenous weapon systems development
  • BrahMos Missile: Jointly developed with Russia, equipped on INS Dunagiri

Key Technologies

ShipKey Technologies
INS DunagiriBrahMos missiles, MFSTAR radar, MRSAM, stealth design
INS SanshodhakAUVs, ROVs, multi-beam echo sounders
INS AgrrayLightweight torpedoes, indigenous rocket launchers, shallow-water sonar