The Indian Navy has successfully tested the K-4 SLBM from its nuclear-powered submarine, INS Arighaat, for the first time. This missile, capable of carrying atomic weapons, boasts a range of 3500 kilometers and provides the country with a critical second-strike capability, meaning submarines can launch a retaliatory strike if land-based facilities are compromised.
The K-4 SLBM marks a significant advancement in India's defense technology as an intermediate-range ballistic missile launched from submarines, integrated into the Navy's Arihant class submarines. Previously, the Navy utilized the K-15 missile, but the K-4 surpasses it in precision, maneuverability, and operational efficiency.
Source: aajtak
The submarines INS Arihant and INS Arighat are equipped with four vertical launching systems, enabling the deployment of these missiles. The missile itself weighs 17 tons, stretches 39 feet long, and has a diameter of 4.3 meters. It is capable of carrying 2500 kg of strategic nuclear payload.
Operational Range of 4000 Kilometers
This two-stage missile operates with a solid rocket motor and solid propellant, giving it an operational range of 4000 kilometers. Adhering to the principle of 'no first use', India's nuclear strategy is defensive, maintaining such capabilities for retaliation if required.
Source: aajtak
Previous Tests and Successes
The developmental launch of K-4 from 160 feet underwater near Visakhapatnam using a pontoon was first carried out successfully on January 15, 2010. A follow-up test was completed on March 24, 2014, with similar technology from a pontoon, marking a pivotal moment in its advancement. Further successes included a depressed trajectory test on March 7, 2016, conducted from INS Arihant over a 700 km range.
On December 17, 2017, an attempt from underwater led to failure, but subsequent successful trials continued, including a successful pontoon launch on January 19, 2020, over a 3500 km range, marking the fifth overall successful test launch. Since then, further tests have ensured continued operational success.
