IRS is proud to be associated with Defence Industry in indigenisation of various equipment in accordance with the call given by Hon’ble Prime Minister for “Atmanirbhar Bharat” (Self Reliant India). IRS provides a full range of Classification and Certification services to Shipyards, building ships and craft for the Indian Navy, Indian Coast Guard and other Defence and Paramilitary forces, and to the industries supplying materials, machinery and equipment for these vessels. Several of these vessels are also maintained in IR Class after delivery.

More than 300 vessels and numerous auxiliary crafts have already been built under IRS Classification for the Indian Navy, Indian Coast Guard, Border Security Force, National Disaster Relief Force and other Government agencies.

IRS is also certifying machinery and equipment, procured from oversees and Indian manufacturers, as per class rules and also ensuring that all specific requirements of the shipyards and shipowners are also complied with.

Advanced Technical Studies and Analyses are also being carried out by qualified and experienced personnel for verifying specific design requirements, including strength, vibration, stability and for minimising acoustic, magnetic, infrared and radar signatures.

Customised Rules-Guidelines have been developed for:

  • Naval Combatant and Non-Combatant Vessels
  • High Speed Vessels
  • Coast Guard Vessels
  • Hovercrafts
  • Rigid Inflatable Boat and Auxiliary vessels
  • Remote Operated Vessels and Autonomous Surface Vessels
  • Solar & Battery Powered Vessels

Vessels being built under Class:

New Generation Missile Vessels Diving Support Vessels and DS Crafts Survey vessels (Large) Shallow water ASW Corvettes
Next Generation Naval Offshore Patrol Vessels Pollution Control Vessels Fast Patrol Vessels Coast Guard Offshore Patrol Vessels
Floating Dock for Indian Navy & Foreign Navy Auxiliary vessels like Supply Vessels, tugs, Barges, Cadet Training Ships Training Simulators for Indian Navy


Equipment under Certification:

 Main and Auxiliary Propulsion   Engines

 High Speed Gear Box

 IPMS, IBS, APMS and DP System

 AC and Ref Plants

RO Plants


HVAC System

Ship Cranes

Davits and Derricks

 Steering System

Fin Stabilisers

Capstan and Winches

Air Diving and Saturation Diving  Equipment

Helicopter Traversing System

Watertight and Fire Class Doors and Hatches

Helicopter Landing Grid

Hangar and Hangar Doors

Fire, Bilge, Salvage, AVCAT Pumps Ship’s Valves Other Class equipment


Advanced Technical Studies & Analysis:

Hull Strength Assessment

Residual Structural Strength Analysis

Ultimate Structural Strength Analysis

Intact and Damage Stability Analysis

Fatigue Damage Assessment

Underwater blast and Shock Analysis

Air borne and Structure Borne Noise prediction

Vibration Prediction and Measurement

Underwater Radiated Noise Prediction Manoeuvring and Seakeeping Analysis Magnetic signature Prediction

Ships Motion Prediction

Plume Gas flow prediction Radar Cross Section Analysis Airwake studies Blast study of weapons


Worldwide presence of IRS allows us to provide prompt and efficient service towards material and product certification for a wide range of Defence requirements.