Engineering:INS Arighaat

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Short description: Arihant-class nuclear submarine

An artist's impression of an Arihant-class submarine

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General characteristics
Class and type: Script error: The function "sclass" does not exist. ballistic missile submarine
Type: Ballistic missile submarine
Displacement: 6,000 tonnes
Length: 111.6 m
Beam: 11 m
Draft: 9.5 m
Installed power: 1 x CLWR-B1 Compact Light-water reactor,[1][2] 83 MW[3]
Propulsion: 1 × propeller shaft, nuclear propulsion
Speed:

Surfaced: 12–15 knots (22–28 km/h)

Submerged: 24 knots (44 km/h)
Range: Unlimited except by food supplies
Endurance: Unlimited except by food supply and maintenance
Test depth: Between 300 m (980 ft) to 400 m (1,300 ft)[4]
Sensors and
processing systems:
  • USHUS sonar
  • Panchendriya unified submarine sonar, control system and underwater communication system [5]
Armament:
  • 6 × 533 mm (21 in) torpedo tubes - estd. 30 charges (torpedoes, missiles or mines)
  • 4 VLS cells for
    • 12 × K-15 Sagarika SLBM (or)
    • 4 × K-4 SLBM
  • [6]

INS Arighaat (SSBN 81) (lit. Vanquisher of the Enemy) is the second of the Indian Navy's Script error: The function "sclass" does not exist.. It is designated S3 Strategic Strike Nuclear Submarine. 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.[7][3]

The submarine was quietly launched in 2017 and little has been publicly announced about its capabilities and current status. The submarine was originally known as INS Aridhaman but was renamed INS Arighaat upon its launch. Arighaat was commissioned on 29 August 2024.[8]

Description

The boat will have one seven-blade propeller powered by a Compact Light water reactor (CLWR). It can achieve a maximum speed of 12–15 knots (22–28 km/h) when on surface and 24 knots (44 km/h) when submerged.[9][10][11] The CLWR is an upgraded form of the one that powers INS Arihant. The CLWR has exceptionally lower acoustic signature than the previous generation making it harder to detect by enemy vessels along with longer endurance.[12]

The submarine has four launch tubes in its hump, just like her predecessor. She can carry up to 12 K-15 Sagarika missiles (each with a range of 750 km or 470 mi), or four K-4 missiles (with a range of 3,500 km or 2,200 mi).[3][13][14]

Status

INS Arighaat was launched in November 2017.[3] INS Arighaat was expected to be commissioned in 2021.[3][15] However the commissioning was pushed to 2024 as per a report in the Hindustan Times.[16][17] INS Arighaat has been commissioned on 29 August 2024 after extensive trials and upgrades. The commissioning ceremony was held in the presence of Defence Minister Rajnath Singh in Naval Dockyard at Visakhapatnam.[18][19][20]

INS Arighaat is significantly more advanced than the INS Arihant with an increased indigenous content of 70%. In contrast to its predecessor which is equipped with only 750-km range missiles, Arighaat is equipped with both K-15 Sagarika and K-4 missiles.[21]

Service history

On 27 November 2024, a nuclear-capable K-4 SLBM with a range of 3,500 km (2,200 mi) was tested from INS Arighaat in Bay of Bengal. The missile was tested without a warhead and this was the first submarine launch of the long range missile system.[22][23][24] While the missile launch was a success, the other parameters for the missile test is being examined as of 2 December.[25]

References

  1. ↑ "Founder's Day Speech, Director, BARC". Bhabha Atomic Research Centre. 30 October 2018. http://www.barc.gov.in/presentations/fddir18.pdf. 
  2. ↑ "DAE Excellence in Science, Engineering & Technology Awards 2010". BARC Newsletter (322): 33. September–October 2011. http://www.barc.gov.in/publications/nl/2011/2011091009.pdf. Retrieved 21 March 2021. 
  3. ↑ 3.0 3.1 3.2 3.3 3.4 "A peek into India's top secret and costliest defence project, nuclear submarines". India Today. 7 December 2017. https://www.indiatoday.in/magazine/the-big-story/story/20171218-india-ballistic-missile-submarine-k-6-submarine-launched-drdo-1102085-2017-12-10. 
  4. ↑ "Arihant-class submarines". http://www.defencenews.in/defence-news-internal.aspx?get=new&id=R5mr0CLjcww=. 
  5. ↑ "Retrieved on 2016-10-21.". http://www.naval-technology.com/projects/arihant-class/. 
  6. ↑ Pike, John (27 July 2009). "Advanced Technology Vessel (ATV)". globalsecurity.org. http://www.globalsecurity.org/military/world/india/atv-specs.htm. 
  7. ↑ "Ensuring India's Qualitative Military Edge". SHARNOFF'S GLOBAL VIEWS. 10 April 2013. http://www.sharnoffsglobalviews.com/india-nuclear-capability-003/. 
  8. ↑ "Second Arihant-Class submarine ‘INS Arighaat’ commissioned into Indian Navy in the presence of Raksha Mantri in Visakhapatnam". 2024-08-29. https://pib.gov.in/PressReleasePage.aspx?PRID=2049870. 
  9. ↑ "SSBN Arihant Class Submarine, India". naval-technology.com. http://www.naval-technology.com/projects/arihant-class/. 
  10. ↑ "INS Arighaat: How a second nuclear submarine boosts India’s strategic reach" (in en). 31 August 2024. https://www.indiatoday.in/india/story/ins-arighaat-how-a-second-nuclear-submarine-boosts-indias-strategic-reach-2591300-2024-08-31. 
  11. ↑ "India to commission second Arihant-class submarine in 2021" (in en). 22 December 2020. https://www.janes.com/osint-insights/defence-news/india-to-commission-second-arihant-class-submarine-in-2021. 
  12. ↑ "How Refined 83 MW PWR on INS Arighat Boosts its Stealth and Endurance Compared to INS Arihant" (in en-US). 8 September 2024. https://defence.in/threads/how-refined-83-mw-pwr-on-ins-arighat-boosts-its-stealth-and-endurance-compared-to-ins-arihant.9797/. 
  13. ↑ "INS Arihant returned yesterday from 20-day deterrent patrol" (in en). 5 November 2018. https://www.indiatoday.in/india/story/ins-arihant-returned-yesterday-from-20-day-deterrent-patrol-1383188-2018-11-05. 
  14. ↑ "'Nuclear-capable ballistic missile tested from INS Arighaat'". The Times of India. 2024-11-28. ISSN 0971-8257. https://timesofindia.indiatimes.com/india/nuclear-capable-ballistic-missile-tested-from-ins-arighaat/articleshow/115747030.cms. 
  15. ↑ Pubby, Manu (21 February 2020). "India's Rs 1.2 lakh crore nuclear submarine project closer to realisation". The Economic Times. https://economictimes.indiatimes.com/news/defence/indias-rs-1-2-l-cr-n-submarine-project-closer-to-realisation/articleshow/74234776.cms. 
  16. ↑ Shishir Gupta (19 February 2023). "Aircraft carrier INS Vikramaditya is back on high seas". Hindustan Times. https://www.hindustantimes.com/india-news/aircraft-carrier-ins-vikramaditya-is-back-on-high-seas-101676775908275.html. 
  17. ↑ Redacción (29 May 2024). "The Indian Navy is preparing to commission the second of its new nuclear-powered ballistic missile submarines" (in es). https://www.zona-militar.com/en/2024/05/29/the-indian-navy-is-preparing-to-commission-the-second-of-its-new-nuclear-powered-ballistic-missile-submarines/. 
  18. ↑ "India commissions INS Arighat: Know all about Navy's 2nd nuclear-powered submarine". The Times of India. 29 August 2024. ISSN 0971-8257. https://timesofindia.indiatimes.com/india/india-commissions-ins-arighat-know-all-about-navys-2nd-nuclear-powered-submarine/articleshow/112900556.cms?utm_source=contentofinterest&utm_medium=text&utm_campaign=cppst. 
  19. ↑ "INS Arighaat: All About India's 2nd Nuclear Ballistic Submarine" (in en). https://www.ndtv.com/india-news/ins-arighat-commissioned-all-you-need-to-know-about-indias-2nd-nuclear-submarine-6442561. 
  20. ↑ "Second Arihant-Class submarine ‘INS Arighaat’ commissioned into Indian Navy in the presence of Raksha Mantri in Visakhapatnam". 29 August 2024. https://pib.gov.in/PressReleasePage.aspx?PRID=2049860. 
  21. ↑ "INS Arighaat fitted with 3,500 km strike range missiles, 70 pc indigenous content". 6 September 2024. https://www.aninews.in/news/national/general-news/ins-arighaat-fitted-with-3500-km-strike-range-missiles-70-pc-indigenous-content20240906192342. 
  22. ↑ "'Nuclear-capable ballistic missile tested from INS Arighaat'". The Times of India. ISSN 0971-8257. https://timesofindia.indiatimes.com/india/nuclear-capable-ballistic-missile-tested-from-ins-arighaat/articleshow/115747030.cms. 
  23. ↑ "Nuclear-capable ballistic missile tested from INS Arighaat: Sources" (in en). 2024-11-28. https://www.indiatoday.in/india/story/nuclear-ballistic-missile-tested-from-submarine-ins-arighaat-2641477-2024-11-28. 
  24. ↑ "K-4 ballistic missile test: MAD message rings loud and clear". The Economic Times. 2024-11-28. ISSN 0013-0389. https://economictimes.indiatimes.com/news/defence/k-4-ballistic-missile-test-mad-message-rings-loud-and-clear/articleshow/115774360.cms?from=mdr. 
  25. ↑ "Navy Chief Dinesh Kumar Tripathi: Deals for Rafale-M jets, three additional Scorpene submarines in advanced stages" (in en-IN). The Hindu. 2024-12-02. ISSN 0971-751X. https://www.thehindu.com/news/national/deals-for-rafale-m-jets-three-additional-scorpene-submarines-in-advanced-stages-navy-chief/article68937239.ece/. 

See also

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  • Script error: The function "sclass" does not exist.
  • Future of the Indian Navy
  • K Missile family



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