INS Aridhaman Commissioned: India Strengthens Nuclear Submarine Capability

INS Aridhaman is a nuclear-powered ballistic missile submarine inducted into the Indian Navy in 2026. It is developed under the Advanced Technology Vessel (ATV) programme with support from DRDO and other agencies. This submarine is part of India's effort to strengthen its strategic defence capabilities.

INS Aridhaman can carry nuclear-capable ballistic missiles such as K-15 (750 km range) and K-4 (around 3,500 km range). It has advanced stealth and endurance features, allowing it to remain underwater for long durations.

This submarine is important because it strengthens India’s nuclear triad:

• Land-based missiles
• Air-delivered weapons
• Sea-based nuclear capability

The sea-based leg is considered the most secure for second-strike capability. This means India can respond even after a nuclear attack.

Background:

• India started ATV programme in 1980s
• INS Arihant was first SSBN commissioned in 2016
• INS Arighat followed later

Static Link:

• Nuclear doctrine: No First Use policy
• Credible Minimum Deterrence

Future Impact:

• Strengthens India's maritime security
• Enhances deterrence against adversaries like China and Pakistan
• Improves indigenous defence technology

🔑 Key Points

• INS Aridhaman is third SSBN of India
• Part of Advanced Technology Vessel programme
• Supports nuclear triad strategy
• Equipped with K-15 and K-4 missiles
• Enhances second-strike capability
• Uses nuclear propulsion for long endurance
• Improves India's strategic deterrence
• Boosts indigenous defence capability

🧠 Concept Link (Very Important)

Nuclear Triad Concept:

• Three delivery systems: land, air, sea
• Ensures survivability of nuclear weapons
• Sea-based systems are hardest to detect
• Important for second-strike capability
• Used by countries like USA, Russia, China, India
• Core part of nuclear deterrence strategy

❓ Practice Questions (MCQ)

1. INS Aridhaman belongs to which category?
A) Aircraft Carrier
B) Destroyer
C) Nuclear-powered submarine
D) Frigate

Answer: C

2. INS Aridhaman is part of which programme?
A) Make in India
B) ATV Programme
C) Agni Programme
D) Sagarmala

Answer: B

3. Which missile can INS Aridhaman carry?
A) BrahMos
B) Akash
C) K-4
D) Nag

Answer: C

4. Nuclear triad includes which of the following?
A) Army, Navy, Air Force
B) Land, Air, Sea-based weapons
C) Satellites, Missiles, Radars
D) Tanks, Ships, Aircraft

Answer: B

5. Second-strike capability means:
A) First attack strategy
B) Defence-only policy
C) Retaliation after nuclear attack
D) Conventional warfare

Answer: C

📜 Previous Year Question (Similar Type)

1. What is the significance of nuclear triad in defence strategy?
Answer: It ensures survivable and credible nuclear deterrence through land, air, and sea systems.

2. Which was India's first nuclear-powered submarine?
Answer: INS Arihant

⚠️ Examiner Trap

Students often confuse SSBN (ballistic missile submarine) with SSN (attack submarine).

🧭 Exam Tip

Questions are usually asked on nuclear triad, missile range, and submarine classification.

🏷️ Topics Covered

INS Aridhaman
Nuclear Submarine
ATV Programme
Nuclear Triad
Second Strike Capability
K-4 Missile
Indian Navy
Defence Technology
Strategic Deterrence
DRDO