INS Arighat

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Arihant follow on class submarine.jpg
An artist's impression of an Arihant-class submarine
Name: INS Arighat
Builder: Shipbuilding Centre (SBC), Visakhapatnam, India[1]
Laid down: 2011[2]
Launched: 19 November 2017[3]
Commissioned: Est 2019
Status: Being outfitted[4]
General characteristics
Type: Ballistic missile submarine
Beam: 15 m (49 ft)
Draft: 10 m (33 ft)
Installed power: 1 × pressurised water reactor[5]
  • Surfaced: 12–15 knots (22–28 km/h)
  • Submerged: 24 knots (44 km/h)
Range: unlimited except by food supplies
Test depth: between 300 m (980 ft) to 400 m (1,300 ft)[citation needed]

Missiles: 24 × K15 SLBM or 8 × K-4[5] SLBM

Torpedoes: 6 × 21" (533 mm) torpedo tubes – est 30 charges (torpedoes, missiles or mines)[6]

INS Arighat is the second Arihant-class submarine.[7][8][9] It is the second nuclear-powered ballistic missile submarine being built by India.[10] It is being built under the Advanced Technology Vessel (ATV) project to build nuclear submarines at the Ship Building Centre in Visakhapatnam.[1] Arighat will have twice as many missile hatches as its predecessor INS Arihant, so it will be able to carry more missiles. It will also have a more powerful reactor than Arihant.[citation needed]

The submarine was originally assumed to be named INS Aridhaman, but when launched it was named INS Arighat.[3]


The boat will have one seven-blade propeller powered by a pressurised water reactor. She can achieve a maximum speed of 12–15 knots (22–28 km/h) when on surface and 24 knots (44 km/h) when submerged.[11][better source needed]

The submarine has eight launch tubes in its hump. She can carry up to 24 K-15 Sagarika missiles (each with a range of 750 km or 470 mi),[12] or eight of the under-development K-4 missiles (with a range of 3,500 km or 2,200 mi).[13]


Arighat is being built in Visakhapatnam. She is currently being outfitted. In January 2012, it was announced that she would be launched in late 2012 or early 2013.[1] In December 2014 it was reported that work on the second nuclear sub-reactor had begun and possibly by early 2016 she will be launched.[14] In October 2017, it was reported that she would be launched in November or December and would undergo outfitting.[15] The launch took place on 19 November.[3] Harbour trials and sea trials are expected to last for 2 years and commissioning is expected sometime in 2019.[16]


  1. ^ a b c S. Anandan (14 January 2012). "Second nuclear submarine headed for year-end launch". The Hindu. Retrieved 2 June 2013. 
  2. ^ PETR TOPYCHKANOV (15 July 2015). "Indo-Russian naval cooperation: Sailing high seas". Russia&India Report. Retrieved 15 July 2015. 
  3. ^ a b c "A peek into India's top secret and costliest defence project, nuclear submarines". India Today. 7 December 2017. Retrieved 11 December 2017. 
  4. ^ "भारत बना रहा है दूसरी परमाणु पनडुब्बी INS अरिदमन-देश – IBN Khabar". 2 June 2013. 
  5. ^ a b "India to achieve N-arm triad in February". The Times of India. 2 January 2012. Retrieved 2 June 2013. 
  6. ^ Pike, John (27 July 2009). "Advanced Technology Vessel (ATV)". Retrieved 2 June 2013. 
  7. ^ "Needed, a nuclear triad". Retrieved 2 June 2013. 
  8. ^ General, Lt. "Indian Navy's Capability Perspective – SP's Naval Forces". Retrieved 23 June 2013. 
  9. ^ "India To Construct Two More Arihant Nuclear Submarines For Navy". Defence Now. 28 February 2012. Retrieved 2 June 2013. 
  10. ^ "Ensuring India's Qualitative Military Edge". SHARNOFF'S GLOBAL VIEWS. Retrieved 9 June 2013. 
  11. ^ "SSBN Arihant Class Submarine, India". Retrieved 2 June 2013. 
  12. ^ "The secret undersea weapon". India Today. 17 January 2008. Retrieved 2 June 2013. 
  13. ^ "The secret 'K' missile family". India Today. 20 November 2010. Retrieved 2 June 2013. 
  14. ^ Work on second nuclear sub reactor begins Deccan Herald 1 December 2014
  15. ^ "A bigger nuclear submarine is coming". The Hindu. 2017-10-15. Retrieved 2017-10-15. 
  16. ^ Pubby, Manu (2017-08-24). "Exclusive: 'Aridaman', India's second nuclear-armed submarine, is ready for launch". ThePrint. Retrieved 2017-08-24.