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INS Aridaman (7,000-tonne) Inducted: India's 3rd SSBN Strengthens Nuclear Triad with K-4 Missiles (3,500 km range)

Target:UPSC GS-IIIMPSCSSC GATeachingPrelims HighMains HighStatic GK Link
03 Apr 2026
~2 min
Source: Indian Express
Key Data:April 4, 20267,000 tonnesK-4 SLBM 3,500 kmK-15 SLBM >700 km83 MW reactor
Bodies:Indian NavyDRDOMazagon Dock Shipbuilders LtdMinistry of Defence
Practice MCQs from today's news ▸
What This Article Covers

1.India inducted its third indigenously built nuclear-powered ballistic missile submarine (SSBN), INS Aridaman, on April 4, 2026.

2.The 7,000-tonne vessel can carry more K-4 submarine-launched ballistic missiles (range 3,500 km) and K-15 missiles (range >700 km), strengthening India's nuclear triad and second-strike capability.

3.The development is crucial for India's strategic autonomy and maritime security, with a fourth SSBN already under construction and plans for indigenous nuclear-powered attack submarines (SSNs).

The Big Picture
Prelims · HighMains · High

The induction of INS Aridaman marks a critical advancement in India's strategic deterrence, solidifying its sea-based nuclear triad and second-strike capability. This 7,000-tonne SSBN can carry more long-range K-4 missiles (3,500 km) than its predecessors, enhancing India's position in the exclusive nuclear triad club alongside the US, Russia, China, and France.

Exam Lens

Quick Exam Facts From News

Induction DateApril 4, 2026
Displacement7,000 tonnes
Missile Types CarriedK-4 SLBM (3,500 km), K-15 SLBM (>700 km)
Predecessor SSBNsINS Arihant (commissioned 2016), INS Arighaat (commissioned 2024)
Nuclear Triad ClubUS, Russia, China, France, India

1-Minute Revision

  • ›Induction Date: April 4, 2026
  • ›Displacement: 7,000 tonnes
  • ›Target this Data: INS Aridaman displacement (7,000 tonnes) and K-4 missile range (3,500 km).
  • ›Target this Nodal Body: Defence Research & Development Organisation (DRDO) and Mazagon Dock Shipbuilders Ltd (MDL).
  • ›Target this Legal Point: India's 'No First Use' nuclear doctrine and its linkage to second-strike capability.

Mastered this topic? Test your knowledge with a full MCQ quiz.

Practice exam-style questions, track your score, and strengthen your recall.

Q1Static LinkageEasy

Which Indian organization, mentioned in the article, was involved in the nuclear submarine project alongside private firms and with Russian help?

Q2Statement-basedHard

Consider the following statements regarding INS Aridaman:

1. It is India's third indigenously built nuclear-powered ballistic missile submarine (SSBN).

2. It is powered by an 83 MW pressurised light-water nuclear reactor, similar to its predecessors.

3. It can carry the K-4 submarine-launched ballistic missile which has a range of more than 700 km.

Which of the statements given above is/are correct?

Q3Data-centricMedium

As per the article, what is the displacement tonnage of the newly inducted INS Aridaman?

Q4Application/ImpactMedium

What is the primary strategic significance of inducting a nuclear-powered ballistic missile submarine (SSBN) like INS Aridaman, as highlighted in the article?

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