MeredithRodrigue at 16:40, 5 May 2026

2026-05-05T16:40:37Z

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{{Short description|Arihant-class nuclear submarine}}
{{pp-extended|small=yes}}
{{use Indian English|date=July 2013}}
{{Use dmy dates|date=November 2024}}{{italic title|string=Arighaat}}
{{Infobox ship
|section1={{Infobox ship/image
| image = Arihant 1.svg
| image_caption = An artist's impression of an ''Arihant''-class submarine
}}

|section2={{Infobox ship/career
| hide_header =
| country = [[India]]
| flag = {{shipboxflag|India|naval}}
| name = INS ''Arighaat''
| ordered =
| awarded =
| builder = Shipbuilding Centre (SBC), [[Visakhapatnam]], [[India]]<ref name="thehindu1">{{cite web|author=S. Anandan|url=http://www.thehindu.com/news/national/second-nuclear-submarine-headed-for-yearend-launch/article2798864.ece|title=Second nuclear submarine headed for year-end launch|work=The Hindu|date=14 January 2012|access-date=2 June 2013}}</ref>
| laid_down = 2011<ref>{{cite web|author=PETR TOPYCHKANOV|url=https://www.rbth.com/blogs/2015/07/15/indo-russian_naval_cooperation_sailing_high_seas_44243|title=Indo-Russian naval. cooperation: Sailing high seas|work=Russia&India Report|date=15 July 2015|access-date=15 July 2015}}</ref>
| launched = 19 November 2017<ref name="launched"/>
| christened =
| acquired =
| commissioned = 29 August 2024
| recommissioned =
| decommissioned =
| in_service =
| out_of_service =
| renamed =
| reclassified =
| refit =
| struck =
| reinstated =
| homeport =
| captured =
| fate =
| status = In active service
}}

|section3={{Infobox ship/characteristics
| hide_header =
| header_caption =
| class = {{sclass|Arihant|submarine|0}} [[ballistic missile submarine]]
| type = [[Ballistic missile submarine]]
| displacement = 6,000 tonnes
| length = 111.6 m
| beam = 11 m
| height =
| draft = 9.5 m
| depth =
| decks =
| deck_clearance =
| power = *1 x CLWR-B1 Compact [[Light-water reactor]],<ref name="CLWR-B1">{{cite news|title=Founder's Day Speech, Director, BARC|url=http://www.barc.gov.in/presentations/fddir18.pdf|access-date=21 March 2021|publisher=Bhabha Atomic Research Centre|date=30 October 2018}}</ref><ref name="clwr_barc">{{cite journal|title=DAE Excellence in Science, Engineering & Technology Awards 2010|journal=BARC Newsletter|date=September–October 2011|issue=322|page=33|url=http://www.barc.gov.in/publications/nl/2011/2011091009.pdf|access-date=21 March 2021|archive-date=15 May 2013|archive-url=https://web.archive.org/web/20130515202113/http://barc.gov.in/publications/nl/2011/2011091009.pdf|url-status=dead}}</ref> 83 MW<ref name="launched"/>
| propulsion = *1 × [[propeller shaft]], [[Nuclear marine propulsion|nuclear propulsion]]
| speed = '''Surfaced:''' {{convert|12|-|15|kn|km/h}}
'''Submerged:''' {{convert|24|kn|km/h}}
| range = Unlimited except by food supplies
| endurance = Unlimited except by food supply and maintenance
| test_depth = Between {{convert|300|m|abbr=on}} to {{convert|400|m|abbr=on}}<ref>{{cite news|title=Arihant-class submarines|url=http://www.defencenews.in/defence-news-internal.aspx?get=new&id=R5mr0CLjcww=|archive-url=https://archive.today/20140826090954/http://www.defencenews.in/defence-news-internal.aspx?get=new&id=R5mr0CLjcww=|url-status=dead|archive-date=26 August 2014|website=Defence News|access-date=23 June 2021}}</ref>
| complement =
| time_to_activate =
| sensors = *[[USHUS (sonar)|USHUS]] sonar
*[[Panchendriya (sonar)|Panchendriya]] unified submarine sonar, control system and underwater communication system <ref name="naval-technology.com">{{Cite web |url=http://www.naval-technology.com/projects/arihant-class/|title=Retrieved on 2016-10-21.|access-date=29 December 2012|archive-url=https://web.archive.org/web/20130502115614/http://www.naval-technology.com/projects/arihant-class|archive-date=2 May 2013|url-status=live }}</ref>
| EW =
| armament = *6 × {{convert|533|mm|in|abbr=on|0}} torpedo tubes - estd. 30 charges (torpedoes, missiles or mines)
*4 [[Vertical launching system|VLS]] cells for
**12 × [[Sagarika (missile)|K-15 Sagarika]] [[SLBM]] (or)
**4 × [[K-4 (SLBM)|K-4]] [[SLBM]]
*<ref>{{cite web|first=John|last=Pike|url=http://www.globalsecurity.org/military/world/india/atv-specs.htm|title=Advanced Technology Vessel (ATV)| publisher=globalsecurity.org| date=27 July 2009| access-date=24 January 2011| url-status=live| archive-url= https://web.archive.org/web/20110829062226/http://www.globalsecurity.org/military/world/india/atv-specs.htm|archive-date=29 August 2011}}</ref>
| notes =
}}
}}
'''INS ''Arighaat''''' '''(SSBN 81)''' ({{Lit|The one who attacks the enemy}}) is the second of the [[Indian Navy]]'s {{sclass|Arihant|submarine}}. 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]].<ref>{{cite web|title=Ensuring India's Qualitative Military Edge|date=10 April 2013 |url=http://www.sharnoffsglobalviews.com/india-nuclear-capability-003/|publisher=SHARNOFF'S GLOBAL VIEWS|access-date=9 June 2013}}</ref><ref name="launched">{{cite news|url=https://www.indiatoday.in/magazine/the-big-story/story/20171218-india-ballistic-missile-submarine-k-6-submarine-launched-drdo-1102085-2017-12-10|title=A peek into India's top secret and costliest defence project, nuclear submarines|date=7 December 2017|work=[[India Today]]|access-date=11 December 2017|url-status=live|archive-url=https://web.archive.org/web/20190420153439/https://www.indiatoday.in/magazine/the-big-story/story/20171218-india-ballistic-missile-submarine-k-6-submarine-launched-drdo-1102085-2017-12-10|archive-date=20 April 2019}}</ref>

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.<ref name=":9">{{cite web |date=2024-08-29 |title=Second Arihant-Class submarine ‘INS Arighaat’ commissioned into Indian Navy in the presence of Raksha Mantri in Visakhapatnam |url=https://pib.gov.in/PressReleasePage.aspx?PRID=2049870 |access-date=28 November 2024 |website=Press Information Bureau}}</ref>

== Description ==
The boat will have one seven-blade propeller powered by a [[Pressurized water reactor|Compact Light water reactor]] (CLWR). It can achieve a maximum speed of {{convert|12|-|15|kn|km/h}} when on surface and {{convert|24|kn|km/h}} when submerged.<ref name="navaltech">{{cite web |url= http://www.naval-technology.com/projects/arihant-class/ |title=SSBN Arihant Class Submarine, India |publisher=naval-technology.com |access-date=2 June 2013}}</ref><ref>{{Cite web |date=31 August 2024 |title=INS Arighaat: How a second nuclear submarine boosts India’s strategic reach |url=https://www.indiatoday.in/india/story/ins-arighaat-how-a-second-nuclear-submarine-boosts-indias-strategic-reach-2591300-2024-08-31 |access-date=10 September 2024 |website=India Today |language=en}}</ref><ref>{{Cite web |date=22 December 2020 |title=India to commission second Arihant-class submarine in 2021 |url=https://www.janes.com/osint-insights/defence-news/india-to-commission-second-arihant-class-submarine-in-2021 |access-date=10 September 2024 |website=Default |language=en}}</ref> 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.<ref>{{Cite web |date=8 September 2024 |title=How Refined 83 MW PWR on INS Arighat Boosts its Stealth and Endurance Compared to INS Arihant |url=https://defence.in/threads/how-refined-83-mw-pwr-on-ins-arighat-boosts-its-stealth-and-endurance-compared-to-ins-arihant.9797/ |access-date=10 September 2024 |website=Defence.in |language=en-US}}</ref>

The submarine has four launch tubes in its hump, just like her predecessor. She can carry up to 12 [[Sagarika (missile)|K-15 Sagarika]] missiles (each with a range of {{convert|750|km|abbr=on|disp=or}}), or four [[K-4 (missile)|K-4 missiles]] (with a range of {{convert|3500|km|abbr=on|disp=or}}).<ref name="launched"/><ref>{{Cite web|url=https://www.indiatoday.in/india/story/ins-arihant-returned-yesterday-from-20-day-deterrent-patrol-1383188-2018-11-05|title=INS Arihant returned yesterday from 20-day deterrent patrol|date=5 November 2018|website=India Today|language=en|access-date=13 October 2019}}</ref><ref>{{Cite news |date=2024-11-28 |title='Nuclear-capable ballistic missile tested from INS Arighaat' |url=https://timesofindia.indiatimes.com/india/nuclear-capable-ballistic-missile-tested-from-ins-arighaat/articleshow/115747030.cms |access-date=2024-11-30 |work=The Times of India |issn=0971-8257}}</ref>

== Status ==
INS Arighaat was launched in November 2017.<ref name="launched" /> ''INS Arighaat'' was expected to be commissioned in 2021.<ref name="launched" /><ref>{{Cite news|last=Pubby|first=Manu|url=https://economictimes.indiatimes.com/news/defence/indias-rs-1-2-l-cr-n-submarine-project-closer-to-realisation/articleshow/74234776.cms|title=India's Rs 1.2 lakh crore nuclear submarine project closer to realisation|date=21 February 2020|work=The Economic Times|access-date=21 February 2020}}</ref> However the commissioning was pushed to 2024 as per a report in the [[Hindustan Times]].<ref name="Arighat2024">{{cite web |url=https://www.hindustantimes.com/india-news/aircraft-carrier-ins-vikramaditya-is-back-on-high-seas-101676775908275.html |title=Aircraft carrier INS Vikramaditya is back on high seas |author= Shishir Gupta |date=19 February 2023 |work=Hindustan Times |publisher= |access-date=16 April 2023 |archive-url=https://web.archive.org/web/20230219033438/https://www.hindustantimes.com/india-news/aircraft-carrier-ins-vikramaditya-is-back-on-high-seas-101676775908275.html |archive-date=19 February 2023|url-status=live}}</ref><ref>{{Cite web |last=Redacción |date=29 May 2024 |title=The Indian Navy is preparing to commission the second of its new nuclear-powered ballistic missile submarines |url=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/ |access-date=29 May 2024 |website=Zona Militar |language=es}}</ref> INS Arighaat has been commissioned on 29 August 2024 after extensive trials and upgrades. The commissioning ceremony was held in the presence of [[Minister of Defence (India)|Defence Minister]] [[Rajnath Singh]] in Naval Dockyard at [[Visakhapatnam]].<ref>{{Cite news |date=29 August 2024 |title=India commissions INS Arighat: Know all about Navy's 2nd nuclear-powered submarine |url=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 |access-date=29 August 2024 |work=The Times of India |issn=0971-8257}}</ref><ref>{{Cite web |title=INS Arighaat: All About India's 2nd Nuclear Ballistic Submarine |url=https://www.ndtv.com/india-news/ins-arighat-commissioned-all-you-need-to-know-about-indias-2nd-nuclear-submarine-6442561 |access-date=29 August 2024 |website=NDTV.com |language=en}}</ref><ref>{{Cite web |date=29 August 2024 |title=Second Arihant-Class submarine ‘INS Arighaat’ commissioned into Indian Navy in the presence of Raksha Mantri in Visakhapatnam |url=https://pib.gov.in/PressReleasePage.aspx?PRID=2049860 |access-date=30 August 2024 |website=Press Information Bureau}}</ref>

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 [[Sagarika (missile)|K-15 ''Sagarika'']] and [[K-4 (missile)|K-4]] missiles.<ref>{{Cite web |date=6 September 2024 |title=INS Arighaat fitted with 3,500 km strike range missiles, 70 pc indigenous content |url=https://www.aninews.in/news/national/general-news/ins-arighaat-fitted-with-3500-km-strike-range-missiles-70-pc-indigenous-content20240906192342 |access-date=7 September 2024 |website=[[Asian News International|ANI]]}}</ref>

== Service history ==
On 27 November 2024, a nuclear-capable [[K-4 (missile)|K-4]] [[SLBM]] with a range of {{Convert|3500|km||abbr=on}} 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.<ref>{{Cite news |title='Nuclear-capable ballistic missile tested from INS Arighaat' |url=https://timesofindia.indiatimes.com/india/nuclear-capable-ballistic-missile-tested-from-ins-arighaat/articleshow/115747030.cms |access-date=2024-11-28 |work=The Times of India |issn=0971-8257}}</ref><ref>{{Cite web |date=2024-11-28 |title=Nuclear-capable ballistic missile tested from INS Arighaat: Sources |url=https://www.indiatoday.in/india/story/nuclear-ballistic-missile-tested-from-submarine-ins-arighaat-2641477-2024-11-28 |access-date=2024-11-28 |website=India Today |language=en}}</ref><ref>{{Cite news |date=2024-11-28 |title=K-4 ballistic missile test: MAD message rings loud and clear |url=https://economictimes.indiatimes.com/news/defence/k-4-ballistic-missile-test-mad-message-rings-loud-and-clear/articleshow/115774360.cms?from=mdr |access-date=2024-11-29 |work=The Economic Times |issn=0013-0389}}</ref> While the missile launch was a success, the other parameters for the missile test is being examined as of 2 December.<ref>{{Cite news |last= |first= |date=2024-12-02 |title=Navy Chief Dinesh Kumar Tripathi: Deals for Rafale-M jets, three additional Scorpene submarines in advanced stages |url=https://www.thehindu.com/news/national/deals-for-rafale-m-jets-three-additional-scorpene-submarines-in-advanced-stages-navy-chief/article68937239.ece/ |access-date=2024-12-02 |work=The Hindu |language=en-IN |issn=0971-751X}}</ref>

==References==
{{reflist|colwidth=30em}}

== See also ==
* {{INS|Arihant}}
* {{sclass|Arihant|submarine}}
* [[Future of the Indian Navy]]
* [[K Missile family]]

{{Submarines of the Indian Navy}}

{{DEFAULTSORT:Arighat}}
[[Category:Arihant-class submarines]]
[[Category:Nuclear-powered submarines]]
[[Category:Ships built in India]]
[[Category:Submarines of India]]
[[Category:2017 ships]]
[[Category:Submarine classes]]

INS Arighaat - Revision history

MeredithRodrigue at 16:40, 5 May 2026