- Type - Nuclear Submarine.
- It will however take another two years of trials for the 6,000-tonne submarine to finally become operational and ready to be deployed.
- Once operational, the submarine will provide India the third leg of its nuclear triad — the capacity to fire nuclear weapons from land, sea and air. The army has nuclear capable Agni and Prithvi-II missiles in its arsenal and the air force has aircraft capable of delivering nuclear warheads.
- With this, India becomes the sixth nation in the world to have the capability to design and construct a nuclear submarine and the only country in the Indian Ocean region to have a nuclear submarine.
- Its design is based on the Russian Akula-1 class submarines.
- Reactor type: The Arihant's 83Mw pressurised water reactor has also been built with considerable assistance from the Russians
- INS Arihant, India's first nuclear-powered ballistic missile submarine, which went "critical" over the weekend, has enabled India to join a select club of nations like the United States, Russia, China, the United Kingdom and France, which possess nuclear-powered submarines.
- INS Arihant is to be the first of the expected five in the class of submarines designed and constructed as a part of the Indian Navy's secretive Advanced Technology Vessel (ATV) project -1974
- It could use missiles of cruise of average reach (1,000 km), ballistic missiles of short reach (300 km), torpedoes and mines, besides participating of operatios special.
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- The submarine will have VLS tubes capable of firing multiple weapons.
- Speed (Knots) 12-15 (surfaced) 30-34 (submerged)
- Range Unlimited. Diving Depth 300 m (984.2ft).
- Weapons Torpedoes: Six 21 inch (533mm) torpedo tubes. Mines. A total capacity (mines, torpedoes, and missiles) of 30 weapons.