India quietly aces another K-4 missile test from submarine

India Dec 25, 2025

On November 27, 2024, India pulled off a successful test of its K-4 submarine-launched ballistic missile (SLBM) from INS Arighaat in the Bay of Bengal.
This marks a significant step in India's push to boost its nuclear second-strike power—even though the Defence Ministry stayed silent about it.

Why does this matter?

The K-4 is no ordinary missile—it can travel 3,500km, carry a hefty nuclear warhead, and uses smart guidance tech for accuracy.
INS Arighaat, which joined the fleet in August 2024, packs four of these missiles and is built for stealthy strength at sea.
With this move from testing to actual crew training, India's making sure its nuclear deterrence is more reliable than ever—a big step up from older systems.