imported>Abm1994 at 16:47, 5 May 2026

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{{Short description|Arihant-class nuclear submarine}}
{{use Indian English|date=July 2013}}
{{Use dmy dates|date=November 2024}}{{italic title|string=Aridhaman}}
{{Infobox ship
|section1={{Infobox ship/image
| image = Arihant follow on class submarine.jpg
| image_caption = A conceptual drawing representing the ''Arihant'' Stretch design
}}

|section2={{Infobox ship/career
| hide_header =
| country = [[India]]
| flag = {{shipboxflag|India|naval}}
| name = INS ''Aridaman''
| 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 = 2018<ref name = "hindu1">{{cite news |title=A bigger nuclear submarine is coming |url= https://www.thehindu.com/news/national/a-bigger-nuclear-submarine-is-coming/article19862549.ece |date=2017|website=www.thehindu.com |publisher=[[The Hindu]] |access-date=25 June 2025}}</ref>
| launched = 23 November 2021<ref name="launched" />
| christened =
| acquired =
| commissioned = 3 April 2026<ref name=":2" />
| recommissioned =
| decommissioned =
| in_service =
| out_of_service =
| renamed =
| reclassified =
| refit =
| struck =
| reinstated =
| homeport =
| captured =
| fate =
| status = Active
}}

|section3={{Infobox ship/characteristics
| hide_header =
| header_caption =
| class = {{sclass|Arihant|submarine|0}} [[ballistic missile submarine]]
| type = [[Ballistic missile submarine]]
| displacement = 7,000 tonnes
| length = 130 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="IndiaToday" />
| 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 Asfaq 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 =
| notes =
}}
}}
'''INS ''Aridhaman''''' ('''SSBN 82''') ({{Lit|Vanquisher of Foes}}) is a [[Nuclear submarine|nuclear-powered]] [[ballistic missile submarine]], and the third of the [[Indian Navy]]'s {{sclass|Arihant|submarine}}. It is designated '''S4''' Strategic Strike Nuclear Submarine. The 7,000-tonne vessel was built under the [[Advanced Technology Vessel]] (ATV) project at the Ship Building Centre in the port city of [[Visakhapatnam]]. It is an upgraded variant of the {{sclass|Arihant|submarine}}.<ref>{{cite web|url=http://www.sunday-guardian.com/analysis/needed-a-nuclear-triad|title=Needed, a nuclear triad|publisher=Sunday-guardian.com|access-date=2 June 2013|archive-date=3 May 2014|archive-url=https://web.archive.org/web/20140503233228/http://www.sunday-guardian.com/analysis/needed-a-nuclear-triad|url-status=dead}}</ref><ref>{{cite web|last=General|first=Lt|url=http://www.spsnavalforces.net/story.asp?mid=23&id=3|archive-url=https://archive.today/20130703105545/http://www.spsnavalforces.net/story.asp?mid=23&id=3|url-status=usurped|archive-date=3 July 2013|title=Indian Navy's Capability Perspective – SP's Naval Forces|publisher=Spsnavalforces.net|access-date=23 June 2013}}</ref><ref>{{cite web|url=http://www.defencenow.com/news/551/india-to-construct-two-more-arihant-nuclear-submarines-for-navy.html|title=India To Construct Two More Arihant Nuclear Submarines For Navy|publisher=Defence Now|date=28 February 2012|access-date=2 June 2013|archive-url=https://web.archive.org/web/20150712032120/http://www.defencenow.com/news/551/india-to-construct-two-more-arihant-nuclear-submarines-for-navy.html|archive-date=12 July 2015|url-status=dead}}</ref>

The submarine, [[INS Arighaat]] was quietly launched in 2021 and little has been publicly announced about its capabilities and current status.<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 eight [[Vertical launching system|VLS]] tubes in its hump, as compared to four on her predecessors—{{INS|Arihant}}, the lead ship of the class, and {{INS|Arighaat}}. She can carry up to 24 [[Sagarika (missile)|K-15 Sagarika]] missiles (each with a range of {{convert|750|km|abbr=on|disp=or}}), eight [[K-4 (missile)|K-4 missiles]] (with a range of {{convert|3500|km|abbr=on|disp=or}}) or [[K-5 (ballistic missile)|K-5 missiles]] (with range of 6,000 km or 3,700 mi).<ref name="IndiaToday">{{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><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>

== Construction and career ==
INS ''Aridhaman'' was launched on 23 November 2021.<ref name="launched">{{Cite news |date=2021-12-31 |title=India Quietly Launches 3rd Arihant-class Nuclear-powered Submarine, Can Carry 8 Ballistic Missiles: Report |url=https://www.news18.com/news/india/india-quietly-launches-3rd-arihant-class-nuclear-powered-submarine-can-carry-8-ballistic-missiles-report-4610366.html |access-date=2021-12-31 |work=News18 |language=en}}</ref> As of February 2025, the submarine was undergoing trials and was expected to be commissioned in 2025 itself.<ref name="dh22">{{cite news |date=3 February 2025 |title=Third Indian N-powered ballistic missile submarine to be inducted this year |url=https://www.deccanherald.com/india/third-indian-n-powered-ballistic-missile-submarine-to-be-inducted-this-year-3387338 |access-date=25 June 2025 |website=www.deccanherald.com |publisher=[[Deccan Herald]]}}</ref>

On 2 December 2025, the [[Chief of the Naval Staff (India)|Navy chief]], [[Admiral (India)|Admiral]] [[Dinesh K Tripathi]], announced that the submarine had entered the final stages of trials and would be commissioned soon.<ref name=":1">{{Cite web|title=Navy to get INS Aridhaman, third Indian-made nuclear submarine|url=https://www.indiatoday.in/india/story/ins-aridaman-third-indian-made-nuclear-submarine-to-be-commissioned-soon-navy-chief-2829303-2025-12-02|website=India Today|date=2025-12-02|access-date=2025-12-02|language=en|first=Shivani|last=Sharma|last2=Negi|first2=Manjeet}}</ref> By late December, the boat had completed sea trials.<ref name=":18">{{Cite web |date=2025-12-29 |title=CHAKRA EXCLUSIVE: India's fourth SSBN sails out for sea trials |url=https://chakranewz.com/critical-technologies/trending/chakra-exclusive-india-rsquo-s-fourth-ssbn-sails-out-for-sea-trials |access-date=2025-12-30 |website=chakranewz |language=en}}</ref> On 19 February 2026, an [[NDTV]] report indicated that the submarine is ready for induction between April and May in the year.<ref name=":0">{{Cite news |date=19 February 2026 |title=India's 3rd Nuclear Ballistic Missile Submarine To Enter Service Soon |url=https://www.ndtv.com/india-news/indias-3rd-nuclear-ballistic-missile-submarine-ins-aridhaman-to-enter-service-in-april-may-2026-11070962/ |access-date=19 February 2026|work=NDTV}}</ref><ref>{{Cite news |date=19 February 2026 |title=India’s third nuclear ballistic submarine set for induction: Why INS Aridhaman matters |url=https://www.moneycontrol.com/news/india/india-s-third-nuclear-ballistic-submarine-set-for-induction-why-ins-aridhaman-matters-13836156.html |access-date=19 February 2026 |work=Moneycontrol}}</ref>

The submarine was commissioned on 3 April 2026 by the [[Defence Minister of India|Defence Minister]], [[Rajnath Singh]].<ref name=":2">{{Cite web |last=Philip |first=Snehesh Alex |date=2026-04-03 |title=India commissions its third nuclear ballistic missile submarine—INS Aridhaman |url=https://theprint.in/defence/india-commissions-its-third-nuclear-powered-ballistic-missile-submarine-ins-aridhaman/2895692/ |access-date=2026-04-03 |website=ThePrint |language=en-US}}</ref><ref>{{Cite news |date=2026-04-03 |title=Bigger, quieter and deadlier: Navy commissions INS Aridhaman - all about India's 3rd nuclear sub - The Times of India |url=https://timesofindia.indiatimes.com/defence/news/bigger-quieter-and-deadlier-navy-commissions-ins-aridhaman-all-about-indias-3rd-nuclear-sub/articleshow/130000699.cms |access-date=2026-04-03 |work=The Times of India |issn=0971-8257}}</ref>

== See also ==

* [[INS Arihant|INS Arihant (S2)]]
* [[INS Arighaat|INS Arighaat (S3)]]
* [[Ships of the Indian Navy|List of Ships of the Indian Navy]]
* [[List of submarines of the Indian Navy|List of Submarines of the Indian Navy]]
* [[Future of the Indian Navy]]

==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:2021 ships]]
[[Category:Submarine classes]]

INS Aridhaman - Revision history

imported>Abm1994 at 16:47, 5 May 2026