With the apparent commissioning of INS Aridhaman, the newest member of its fleet of nuclear-powered ballistic missile submarines (SSBNs), India has made tremendous progress in strengthening its nuclear deterrence posture. India’s foreign policy
The launch of strategic nuclear delivery systems from land, sea, and air platforms is made possible by this breakthrough, which highlights New Delhi’s dedication to a strong nuclear triad. India’s second-strike capabilities are improved by the submarine’s silent introduction, which is essential for preserving credible deterrence in an unstable regional security context.
When Defense Minister Rajnath Singh posted a mysterious message on the social media site X on April 3, specifically using the word “Aridhaman,” the rumors about INS Aridhaman reached a fever pitch.
Widespread speculation in defense circles and media sources was sparked by this inconspicuous announcement, which was seen as confirmation of the submarine’s commissioning. The timing and wording of the article were exactly in line with persistent rumors, heightening expectations on India’s growing underwater nuclear arsenal.
Building immediately on the groundwork set by its predecessors, INS Aridhaman is the third ship in the Indian Navy’s esteemed SSBN program. The program began with the 2009 launch of the first SSBN, INS Arihant.
With the official commissioning of that groundbreaking submarine in 2016, India became a member of the select group of countries with sea-based nuclear deterrence.
The second submarine in the series, INS Arighat, went into service in 2024 after INS Arihant. This development shows that India’s domestic submarine-building capabilities have steadily improved, overcoming technological challenges in nuclear propulsion and missile integration. The Navy’s strategic underwater presence has been gradually strengthened with each commissioning. Opportunities for defense exports
Over the past year, rumors regarding INS Aridhaman’s preparedness have grown significantly, especially following a significant comment made by Chief of Naval Staff Admiral Dinesh Tripathi. The Admiral officially validated earlier rumors by announcing that the submarine had reached the end of its sea testing. These tests are crucial because they include thorough evaluations of armament systems, propulsion, and stealth in practical settings.
The momentum behind the commissioning of INS Aridhaman is indicative of larger developments in India’s long-running, secretive Advanced Technology Vessel (ATV) project. This submarine, which belongs to the Arihant-class series, has a similar design to its siblings but offers noticeable improvements.
Expectations indicate that a fourth Arihant-class SSBN will be commissioned as early as next year, indicating a quickening pace of production.
INS Aridhaman’s increased fighting capability and physical size distinguish it from INS Arihant and INS Arighat. With a displacement of about 7,000 tons, it is a larger vessel with better stability, endurance, and payload capacity. The class’s strategic perimeter is redefined by this size advantage, which directly translates into better firepower.
According to reports, INS Aridhaman can carry up to 24 K-15 Sagarika short-range ballistic missiles, which is a significant increase over the 12 that her predecessors could carry. With a range of roughly 750 kilometers, these missiles preserve nuclear credibility while offering tactical flexibility for local threats.
INS Aridhaman can accommodate up to eight nuclear-tipped K-4 or K-5 missiles in addition to the K-15 loadout. With an extended range of almost 3,500 kilometers, the K-4 allows India to reach far into enemy territory. Even longer standoff distances—possibly beyond 5,000 kilometers—are promised by the K-5, which is still in development, expanding the range of launch choices.
The previous submarines, INS Arihant and INS Arighat, on the other hand, only have four K-4 missiles and 12 K-15 Sagarika missiles. This discrepancy emphasizes INS Aridhaman’s function as a crucial but progressive upgrade that gradually closes holes in India’s sea-based deterrence infrastructure. A key component of nuclear strategy, these improvements guarantee survivability against preemptive strikes.
The commissioning occurs at a geopolitically advantageous time, as indicated by the Defence Minister’s position and confirmed by naval leadership. INS Aridhaman strengthens India’s undersea dominance in the face of growing maritime tensions in the Indian Ocean Region, especially in regard to China’s growing submarine force. By guaranteeing reprisal, it reassures both allies and enemies of New Delhi’s determination to protect its interests.
From INS Arihant in 2016 to INS Arighat in 2024, now INS Aridhaman, and the upcoming fourth boat, the quick succession of Arihant-class inductions portends a mature SSBN force. By subtly projecting power beneath the waves, this fleet will support India’s no-first-use nuclear policy.
Three fundamental tenets of India’s nuclear policy are Massive Retaliation, Credible Minimum Deterrence, and No First Use. These pillars, which emphasize survivability, caution, and the guarantee of deadly reprisal in the event of an attack, collectively characterize the nation’s approach to nuclear strategy.
India’s pledge to never launch a nuclear attack is emphasized by the No First Use policy. The viability of its nuclear weapons is crucial to the doctrine’s legitimacy because retaliation would only occur after absorbing a first strike. The idea of a second-strike capacity becomes crucial at this point. NFU runs the risk of being perceived as hollow if it is unable to respond to a disarming attack.
Credible Minimum Deterrence makes ensuring that India only keeps the bare minimum of weapons to ensure guaranteed reprisal. This idea provides enough capabilities to deter rivals while avoiding the destabilizing impacts of an arms race. It is intended to project stability while maintaining the capacity to cause intolerable harm if provoked. It strikes a balance between restraint and preparedness.
The third pillar, Massive Retaliation, pledges to use overwhelming force in response to any nuclear attack on India. By making the costs of aggression unacceptably high, the doctrine aims to dissuade adversaries and strengthen the credibility of deterrence.
The key element is how long India’s deterrent will last. Despite their strength, air-delivered weapons and land-based missiles are nevertheless susceptible to a disarming first strike. Command centers, airbases, and fixed silos can all be attacked and destroyed. Nuclear-armed submarines, on the other hand, are the most resilient member of the nuclear triad since they are essentially undetectable at depth. This guarantees that India can still launch a deadly counterattack even after suffering a first strike.
India’s strategic vision is essentially demonstrated by INS Aridhaman’s inclusion into the nuclear triad. New Delhi strengthens its deterrence posture and ensures peace through strength in an unpredictable time by covertly accumulating submarine-launched ballistic missile capabilities.
