INS Arihant

From Wikipedia, the free encyclopedia
Jump to: navigation, search
India's Advanced Technology Vessel (ATV)
INS Arihant during sea trials in December 2014
Name: INS Arihant
Builder: Shipbuilding Centre (SBC), Visakhapatnam, India
Launched: 26 July 2009
Commissioned: February 2016 (expected)
Homeport: Visakhapatnam
Status: Harbour trials completed, Sea trials started in December 2014
General characteristics
Class & type: Arihant-class ballistic missile submarine
Displacement: surface:6,000 tonne (estimated) [1]
Length: 111 m (364 ft)[2]
Beam: 15 m (49 ft)[2]
Draft: 11 m (36 ft)[2]
Installed power: 83 MW (111,305 hp)
Propulsion: PWR using 40% enriched uranium fuel (83 MWe);[2] one turbine (47,000 hp/70 MW); one shaft; one 7-bladed, high-skew propeller (estimated)
Range: unlimited except by food supplies
Test depth: 350 m (1,150 ft) (estimated)[3]
Complement: 95–100 officers and men
Sensors and
processing systems:
USHUS sonar

INS Arihant (Sanskrit: अरिहंत, meaning "Slayer of Enemies" (S-73)) is the lead ship of India's Arihant class of nuclear-powered ballistic missile submarines. The 6,000 tonne vessel was built under the Advanced Technology Vessel (ATV) project at the Ship Building Centre in the port city of Visakhapatnam.

Arihant was launched on 26 July 2009, the anniversary of Vijay Diwas (Kargil War Victory Day) by Former Prime Minister of India, Dr. Manmohan Singh. As of November 2015, it was still undergoing sea trials,[4] and is expected to join the Indian Naval fleet in February 2016 during the International Fleet Review 2016.[5]


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. The Arihant-class submarines are reported to be based on the Akula-class submarine.[6] Their crew will have the opportunity to train on INS Chakra, an Akula-class submarine, which the Indian Navy leased from Russia.[7][8] Arihant will be more of "a technology demonstrator", rather than a fully operational SSBN according to Admiral Nirmal Verma.[9]

The vessel will be powered by an 83 megawatts (111,305 hp) pressurised light-water reactor[10] with enriched uranium fuel.[11] A land-based prototype of the reactor was first built at Kalpakkam and made operational in September 2006. Successful operation over a period of three years yielded the data that enabled the production version for Arihant.[12][13] It was reported that an 80 MW nuclear reactor was integrated into the hull of the ATV in January 2008.[14]

The hull for the vessel was built by L&T's Hazira shipbuilding facility. Tata Power built the control systems for the submarine. The systems for the steam turbine integrated with the reactor are supplied by Walchandnagar Industries.[15] The consultancy for this project was provided by Russia.[16] Russia was also reported to have provided assistance to BARC scientists in miniaturising the reactor to fit into the hull of the nuclear submarine[17]


Conceptual drawing of INS Arihant

Arihant has four vertical launch tubes, which can carry twelve (three per launch tube) smaller K-15 missiles or four larger K-4 missiles. The K-4 has a longer range of 3,500 km (2,200 mi) and has commenced trials.[18][19][20]


INS Arihant was introduced to the public on 26 July 2009 at a symbolic launch ceremony by then Prime Minister Manmohan Singh's wife Gursharan Kaur.[21] The launch coincided with the tenth anniversary of the conclusion of the Kargil War.[22] and consisted of floating the vessel by flooding the dry dock. Defense Professionals Daily claimed Arihant was launched without key systems including its nuclear reactor, surveillance equipment, and ordnance. Per naval tradition, Gursharan Kaur cracked a coconut on the hull to mark the launch of the submarine at the secret naval base 'Matsya' in Visakhapatnam.[23] Photography was prohibited and photos showing the complete vessel are not available.[24][25] In his address to the crowd, Prime Minister Manmohan Singh billed the submarine as an outcome of a public-private partnership. He also thanked Russia in his address stating "I would also like to express our appreciation to our Russian friends for their consistent and invaluable cooperation, which symbolizes the close strategic partnership that we enjoy with Russia".[26] The launch of Arihant strengthens India's endeavour to build a credible nuclear triad – the capability to fire nuclear weapons from air, land and sea.

Development phases[edit]

On the condition of anonymity, a nuclear scientist familiar with the project echoed this report in response to the media coverage that India had successfully launched a completed nuclear submarine.[27] It was also expected that the duplication of India's land based reactor, integration of systems, and sea trials are expected to take three to five years.[28]

Admiral Verma told reporters on 7 August 2012 that sea trials of Arihant are commencing in coming months and she is steadily progressing towards operationalisation.[29] On 27 January 2013, Sagarika, the primary armament of Arihant, completed its final developmental test and will now be integrated with the submarine.[30] On 10 August 2013, the nuclear reactor of the submarine went critical;[10] this was done after several months of system checks using shore-based high-pressure steam.[10][31] The reactor's power was raised in increments of 5 to 10% until it reached full power.

Current status[edit]

On 13 December 2014, Arihant emerged partially submerged from the breakwaters of the Visakhapatnam harbour, marking a step in validation of indigenous technologies and sailed north along the Bay of Bengal coast off for its extensive sea trails.[32][33][34][35] The sea trials will include the firing of the indigenous submarine-launched ballistic missiles & cruise missiles. While its 100-member crew have been trained by Russian specialists, Indian scientists at Mumbai's Bhabha Atomic Research Centre have developed a significant expertise in reducing the size of the reactor to help it fit into the 10 metres (33 ft) diameter hull of the submarine. As per Defence Minister Manohar Parrikar, the sea trials of INS Arihant will last for 8 to 10 months, before its induction and commissioning into the Indian Navy in the first quarter of 2016.[36] The Indian Navy is keen to induct the indigenous nuclear-powered submarine before International Fleet Review (IFR), scheduled for February 2016 at the port city of Vishakhapatnam.[37]



See also[edit]


  1. ^ "India to Construct Two More Arihant Nuclear Submarines for Navy". DefenceNow. Retrieved 2 June 2015. 
  2. ^ a b c d Subramanian, T.S. (15 August 2009). "Nuclear Arm". The Frontline 26 (17). Retrieved 2 June 2015. 
  3. ^ [1][dead link]
  4. ^ "India’s Project 75 SSKs: Too Late to Save the Submarine Force?". Defense Industry Daily. 2 June 2015. Retrieved 4 May 2015. 
  5. ^ Eckstein, Megan (6 April 2015). "India Launches First Indigenously Built Attack Submarine". USNI. Retrieved 2 June 2015. 
  6. ^ "SSBN Arihant Class Submarine, India". Retrieved 2 June 2015. 
  7. ^ "Arihant – Advanced Technology Vessel (ATV)". Global Security. Retrieved 2 June 2015. 
  8. ^ "Leased Russian n-submarine to set sail for India this month end". indiatoday. 15 December 2011. Retrieved 2 June 2015. 
  9. ^ Pandit, Rajat (3 December 2009). "Home-made nuke sub INS Arihant to be inducted in 2 years". The Times of India. Retrieved 2 June 2015. 
  10. ^ a b c Pandit, Rajat (10 August 2013). "Reactor of India's first indigenous nuclear submarine INS Arihant goes 'critical'". The Times of India. Retrieved 2 June 2015. 
  11. ^ Pandit, Rajat (17 July 2009). "India set to launch nuclear-powered submarine". The Times of India. Retrieved 2 June 2015. 
  12. ^ Subramanian, T.S. (2 August 2009). "PWR building shows indigenous capability, says Kakodkar". The Hindu (Chennai, India). Retrieved 2 August 2009. [dead link]
  13. ^ Venkatesh, MR (2 August 2009). "Arihant propulsion reactor unveiled". Hindustan Times. Retrieved 2 June 2015. 
  14. ^ "The secret undersea weapon". indiatoday. 17 January 2008. Retrieved 2 June 2015. 
  15. ^ Joseph, Josy (27 July 2009). "Private sector played a major role in Arihant – India – DNA". Daily News and Analysis. Retrieved 2 June 2015. 
  16. ^ Bagla, Pallava (3 August 2009). "Russians helped with INS Arihant's heart: Kakodkar". NDTV. Retrieved 2 June 2015. 
  17. ^ Malhotra, Jyoti (12 August 2013). "How India's pride INS Arihant was built". Business Standard. Retrieved 2 June 2015. 
  18. ^ Subramanian, T.S. (8 May 2014). "Success on debut for undersea launch of missile". The Hindu. Retrieved 2 June 2015. 
  19. ^ "India tests new underwater nuclear missile". The Times of India. 26 March 2014. Retrieved 2 June 2015. 
  20. ^ Thapar, Vishal (10 May 2014). "India tests 3,000 km range n-missile in secret". The Sunday Guardian. Retrieved 2 June 2015. 
  21. ^ "Wife of Indian PM launches home-made nuclear attack submarine". Xinhuanet. 26 July 2009. Retrieved 2 June 2015. 
  22. ^ Unnithan, Sandeep (16 July 2009). "Exclusive: PM's wife to launch INS Arihant, India's first nuclear submarine". indiatoday. Retrieved 2 June 2015. 
  23. ^ "India inducts nuke submarine into navy". The Hindu (Chennai, India). 26 July 2009. Retrieved 10 September 2009. [dead link]
  24. ^ "PIB's Latest Photograph". Retrieved 17 August 2009. [dead link]
  25. ^ "PIB's Latest Photograph". Retrieved 17 August 2009. [dead link]
  26. ^ Singh, Harmeet Shah (26 July 2009). "India launches nuclear submarine". CNN. Retrieved 17 August 2009. 
  27. ^ Jayaraman, KS (13 August 2009). "India's Nuclear Sub Doesn't Have Working Reactor Yet". Daiji World. Retrieved 2 June 2015. 
  28. ^ Von Kospoth, Nicolas (28 July 2009). "India's INS Arihant Makes First Contact with Water". Defense Professionals Daily. Retrieved 10 September 2009. [dead link]
  29. ^ "India's first home-built nuclear submarine INS Arihant set for trials". 7 August 2012. [dead link]
  30. ^ Mallikarjun, Y.; Subramanian, T. S. (27 January 2013). "India successfully test-fires underwater missile". The Hindu (Chennai, India). Retrieved 2 June 2015. 
  31. ^ "Arihant achieves criticality when the boat was "already in the sea"". Jagran Josh. 11 August 2013. Retrieved 2 June 2015. 
  32. ^ "India's nuclear submarine Arihant flagged off for sea trials". Economic Times. 13 December 2014. Retrieved 2 June 2015. 
  33. ^ Subrahmanyam, G.S. (13 December 2014). "INS Arihant sails out of harbour". The Hindu. Retrieved 2 June 2015. 
  34. ^ "India’s first nuclear-powered Submarine INS Arihant will head out for sea trials by Year-end". IANS. 2 November 2014. Retrieved 2 June 2015. 
  35. ^ "Agni-5, INS Arihant to be ready for induction next year". 7 February 2014. Retrieved 2 June 2015. 
  36. ^ Ojha, Anjali (2 November 2014). "Indigenous nuclear-armed submarine INS Arihant's sea trials by year-end". The Economic Times. Retrieved 2 June 2015. 
  37. ^ Ojha, Anjali (18 October 2015). "Indian Navy keen on fielding indigenous nuclear-powered submarine at international fleet review". The Economic Times. Retrieved 18 October 2015. 

External links[edit]