Strengthening the Blue Water Navy

  • 03 Apr 2026

In News:

Recently, Garden Reach Shipbuilders and Engineers Ltd (GRSE) achieved a significant milestone by delivering three frontline naval platforms—INS Dunagiri, INS Sanshodhak, and INS Agrayto the Indian Navy in a single day. This achievement brings GRSE’s total warship count to 118, with 80 delivered specifically to the Indian Navy, underscoring the shipyard's role in India's indigenous defense ecosystem.

INS Dunagiri: The Stealth Vanguard (Project 17A)

The INS Dunagiri is the second of three Advanced Stealth Frigates built by GRSE under Project 17A (Nilgiri-class). It is a reincarnation of the erstwhile Leander-class frigate that served from 1977 to 2010.

  • Specifications: A 149-meter long, 6,670-tonne vessel.
  • Propulsion: Utilizes a Combined Diesel or Gas (CODOG) system for high-speed intercepts and long-endurance patrols.
  • Offensive Power: Armed with BrahMos supersonic cruise missiles for precision land and sea strikes.
  • Defense & Sensors: Features an Advanced AESA radar and an integrated combat management system (CMS).
  • Strategic Role: Designed for multi-dimensional warfare, it can engage threats across air, surface, and sub-surface domains simultaneously.

INS Sanshodhak: The Hydrographic Pioneer (Survey Vessel – Large)

INS Sanshodhak (meaning "Researcher") is the fourth and final vessel in the Survey Vessel (Large) class, replacing the older Sandhayak-class ships.

  • Primary Mission: To conduct full-scale hydrographic surveys of ports, harbors, and deep-sea navigation channels.
  • Capabilities: Equipped with advanced Autonomous Underwater Vehicles (AUVs) and Remotely Operated Vehicles (ROVs) to collect geophysical and oceanographic data.
  • Secondary Roles: Its versatile design allows it to function as a Hospital Ship during Humanitarian Assistance and Disaster Relief (HADR) missions and carry out limited combat roles.

INS Agray: The Littoral Warrior (ASW Shallow Watercraft)

INS Agray is the fifth ship of the Arnala-class, specifically designed for Anti-Submarine Warfare (ASW) in littoral (coastal) waters.

  • Indigenous Prowess: Boasts approximately 88% indigenous content, including a GRSE-built 30 mm naval surface gun.
  • Weaponry: Features lightweight torpedoes and ASW rockets specifically tuned for shallow-water threats.
  • Agility: Powered by waterjet propulsion with a shallow draught of only 2.7 meters, allowing it to operate in coastal areas where larger frigates cannot navigate.

Comparison of Key Features

Vessel

Class/Project

Primary Role

Key Technology

INS Dunagiri

Project 17A Frigate

Multi-role Combat

Stealth Design & CODOG

INS Sanshodhak

Survey Vessel (Large)

Mapping & HADR

Hydrographic Data Suite

INS Agray

ASW SWC

Coastal Defense

Waterjet Propulsion