BHUBANESWAR: In a leap forward in deterrence capability, India has successfully test-fired the indigenously developed long range nuclear-capable ballistic missile K-4 from a home grown submarine positioned at an undisclosed location in the Bay of Bengal, making it a strategic player in the South East Asia region.
Defence sources said the submarine-launched ballistic missile (SLBM) was flight-tested by the Strategic Forces Command (SFC) for the first time from INS Arighaat on Wednesday. The INS Arighaat is a 6,000-tonne nuke-powered submarine that was commissioned in the armed forces in August.
Code-named after former President APJ Abdul Kalam, the missile, with a strike range of over 3,500 km and designed for precision targeting and deterrence, is capable of striking deep into enemy territory while being launched from a stealthy underwater platform.
Developed by DRDO, the missile successfully hit its target in the Indian Ocean region with high accuracy. "The notice to airmen was issued for a range of 3,490 km, marking the missile's full length. The weapon tested in full operational configuration covered close to the coordinated distance, demonstrating India's technological and operational readiness," sources told The New Indian Express.
Although defence officials are tight-lipped about the mission, the missile fired from the onboard silos of the ship-submersible ballistic nuclear (SSBN) submarine also validated the capability of the newly built underwater war vessel to fire nuclear capable long range missiles and the killing efficiency of the advanced weapon system.
This successful test underlines India's strategic deterrence capabilities, enhancing its security posture in the Indo-Pacific region. It also positioned India among an elite group of six nations possessing SLBM technology, a crucial component of a credible nuclear triad. Other countries having the capability are the US, Russia, China, France and UK.
Defence experts said the ability to launch nuclear-tipped weapons from submarines ensures greater survivability as compared to land or air-based systems and aligns with India's 'no first use' nuclear policy that focuses credible deterrence without aggressive intent.
The solid-fueled K-4 missile with the features of boost-glide flight is hard to detect and can defeat any anti-ballistic missile system. Equipped with satellite updates to modify accumulated errors from its inertial navigation system, the weapon system is dangerous in terms of lethality and one of its kind in the world.
The 10-metre long missile with a diameter of 1.5 metre weighs around 20 tonne and can carry warheads up to 2.5 tonnes. India is now developing the K-5 SLBM, which will have a strike range of more than 5,000 km.
The New Indian Express was the first to report the missile's successful trial from a submerged pontoon (replica of a submarine) off Visakhapatnam coast in March 2016.
Fire power
Operational Range - 3,500 km
Length - 10 metres
Width - 1.5 metre
Weight - 20 tonnes
Warhead - 2.5 tonnes
Engine - Solid fueled