India's new submarines to get 200-MWe nuclear reactor to boost power

India is developing a new 200-MWe nuclear reactor at the Bhabha Atomic Research Centre (BARC) to power its next-generation submarines, including the S5 Nuclear Class Submarine and six planned Nuclear Attack Submarines (Project 77). This pressurized light-water reactor fueled by enriched uranium is highly fuel-efficient, capable of operating up to ten years without refueling. The design and simulation phases are complete, and production is imminent. This reactor will significantly enhance India’s submarine capabilities by providing higher speed, longer range, and improved stealth compared to the current 83-MWe reactors used in submarines like INS Arihant and INS Arighaat. The upgrade aims to bolster India’s strategic defense posture amid China’s rapidly expanding and technologically advanced nuclear submarine fleet, which is expected to become the world’s largest by 2030. The S5-class submarines, with a displacement of 13,000 tons and armed with 12 to 16 K-5 submarine-la