INS Aridhaman

{{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 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 *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-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>

== Description == The boat will have one seven-blade propeller powered by a 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 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 K-15 Sagarika missiles (each with a range of {{convert|750|km|abbr=on|disp=or}}), eight K-4 missiles (with a range of {{convert|3500|km|abbr=on|disp=or}}) or 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 Navy chief, 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, 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>

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

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

{{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