India marked a major milestone in its strategic defence programme after successfully conducting a K-4 missile test from the nuclear-powered submarine INS Arighat in the Bay of Bengal on December 25. The test significantly strengthens India’s underwater nuclear deterrence and reinforces its second-strike capability, a critical pillar of national security.
The submarine-launched ballistic missile has a strike range of 3,500 kilometres and can reportedly carry a warhead weighing close to two tonnes. Defence officials confirmed that while the launch met key objectives, the missile will undergo further technical evaluation before it is formally inducted into operational service following the K-4 missile test.
What Is the K-4 Missile?
The K-4, also known as Kalam-4, is a nuclear-capable intermediate-range submarine-launched ballistic missile developed by the Defence Research and Development Organisation. It was first tested secretly off the coast of Visakhapatnam in January 2010, followed by subsequent trials that validated its ability to eject safely from a submerged launcher before igniting its rocket motor.
The missile measures around 12 metres in length, has a diameter of 1.3 metres, and weighs nearly 17 tonnes. Powered by solid rocket propellant, it uses advanced navigation systems such as the Global Navigation Satellite System along with India’s indigenous NavIC. These features were closely assessed during the recent K-4 missile test.
Designed For Arihant-Class Submarines
The missile has been specifically designed for India’s Arihant-class nuclear submarines, including INS Arihant and INS Arighat. Its underwater launch capability ensures survivability and stealth, making it a crucial component of India’s nuclear triad after the successful K-4 missile test.
Bharat Dynamics Limited is responsible for manufacturing the missile, reflecting the growing role of indigenous defence production in strengthening national capabilities.
Why The Test Is Strategically Important
With a range of 3,500 km, the missile enhances India’s ability to counter emerging maritime threats in the Indian Ocean Region, particularly amid increasing Chinese naval presence. The K-4 missile test also reduces vulnerability to a first strike, ensuring credible deterrence and regional stability.
FAQs
Q: What is the K-4 missile test conducted by India?
A: The K-4 missile test involved firing a submarine-launched ballistic missile from INS Arighat to evaluate its range, accuracy, and underwater launch capability.
Q: Why is the K-4 missile test important for India’s defence?
A: The K-4 missile test strengthens India’s second-strike capability and enhances underwater nuclear deterrence.
Q: What is the range of the K-4 missile?
A: The K-4 missile has an operational range of approximately 3,500 kilometres.
Q: Who developed the K-4 missile?
A: The missile was developed by the Defence Research and Development Organisation (DRDO).
