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DRDO Delivers Naval Flare System for Kalvari-Class Submarines to Indian Navy.

Science and Technology | Dated: 03 Sep 2025

On August 29, 2025, the Defence Research and Development Organisation (DRDO), through its High Energy Materials Research Laboratory (HEMRL) in Pune, successfully developed and delivered an indigenous Signal Star Naval Flare system for the Indian Navy's Kalvari-class submarines. This advancement marks a significant stride towards enhancing India's self-reliance in naval defence technologies.

🎯 Key Highlights:

  • - The Signal Star Naval Flare system was developed by DRDO's HEMRL, Pune, and formally handed over to the Director General of Naval Armament Inspection (DG-NAI), Rear Admiral Rupak Barua, at a ceremony held in Pune. This delivery underscores DRDO's commitment to bolstering India's naval capabilities through indigenous innovation.
  • - The flare system is designed to serve as an underwater pyrotechnic communication device, enabling submarines to signal at the surface during operations.
  • - Upon ejection from the submarine's signal ejector, the flare ascends through the water column and ignites upon reaching the surface, emitting a high-intensity light visible over long distances, even in adverse weather conditions.

💡 Other Important Facts:

  • (i) The Signal Star Naval Flare offers dual-color signaling capabilities. Red signals indicate distress or emergency situations, while green signals are used for identification, recognition, or safe-operational communication during fleet maneuvers. This versatility enhances tactical communication and coordination among naval assets.
  • (ii) The flare is housed in a pressure-resistant casing to ensure reliable performance under high underwater pressures. Its hydrostatic mechanism triggers the flare at the surface, producing brilliant red or green star signals depending on tactical requirements. The system's design emphasizes durability and functionality in challenging marine environments.
  • (iii) The successful development and delivery of the Signal Star Naval Flare system align with India's 'Atmanirbhar Bharat' initiative, aiming to achieve self-reliance in critical defence technologies. This advancement not only strengthens the Indian Navy's operational readiness but also contributes to the nation's broader goal of reducing dependence on foreign defence equipment.

📚 Test Your Knowledge:

Recently, which organization developed and delivered the Signal Star Naval Flare system to the Indian Navy?

Correct Answer: DRDO

🚀 Quick Recap:

About DRDO

  • Chairman: Sameer V. Kamat
  • Headquarters: New Delhi