# INS Arisudan > Mediated Wiki article. Canonical URL: https://mediated.wiki/source/INS_Arisudan > Markdown URL: https://mediated.wiki/source/INS_Arisudan.md > Source: https://en.wikipedia.org/wiki/INS_Arisudan > Source revision: 1356322462 > License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) {{Short description|Arihant-class nuclear submarine}} {{use Indian English|date=July 2013}} {{Use dmy dates|date=November 2024}} {{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](/source/India) | flag = {{shipboxflag|India|naval}} | name = INS ''Arisudan'' | ordered = | awarded = | builder = Shipbuilding Centre (SBC), [Visakhapatnam](/source/Visakhapatnam), [India](/source/India){{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}} | laid_down = 2018{{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](/source/The_Hindu) |access-date=25 June 2025}} | launched = 16 October 2024 https://www.thehindu.com/news/national/indias-fourth-nuclear-submarine-launched-into-water/article68783731.ece | christened = | acquired = | commissioned = | recommissioned = | decommissioned = | in_service = | out_of_service = | renamed = | reclassified = | refit = | struck = | reinstated = | homeport = | captured = | fate = | status = [Sea trials](/source/Sea_trials) underway }} |section3={{Infobox ship/characteristics | hide_header = | header_caption = | class = {{sclass|Arihant|submarine|1}} | type = [Nuclear](/source/Nuclear_submarine) [ballistic missile submarine](/source/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](/source/Light-water_reactor),{{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}}{{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}} 83 MW | propulsion = *1 × [propeller shaft](/source/propeller_shaft), [nuclear propulsion](/source/Nuclear_marine_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}} | complement = | time_to_activate = | sensors = *[USHUS](/source/USHUS_(sonar)) sonar *[Panchendriya](/source/Panchendriya_(sonar)) unified submarine sonar, control system and underwater communication system{{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 }} | EW = | armament = * 6 × 21" (533 mm) torpedo tubes – est 30 charges (torpedoes, cruise missiles or mines){{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}} *8 VLS cells for either **24 [K-15 Sagarika](/source/Sagarika_(missile)) [SLBM](/source/SLBM) **8 [K-4](/source/K-4_(SLBM)) [SLBM](/source/SLBM) | notes = }} }}'''INS ''Arisudan''''' ('''SSBN 83''') ({{Lit|Slayer of foes}}) is a [nuclear-powered](/source/Nuclear_submarine) [ballistic missile submarine](/source/ballistic_missile_submarine), and the fourth and final {{sclass|Arihant|submarine|1}} of the [Indian Navy](/source/Indian_Navy). 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](/source/Visakhapatnam). It is an upgraded variant of the ''Arihant''-class submarine.{{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}}{{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}} == Description == The boat will have one seven-blade propeller powered by a [Compact Light Water Reactor](/source/Pressurized_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.{{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}}{{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}}{{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}} The CLWR is an upgraded form of the one that powers [INS Arihant](/source/INS_Arihant). The CLWR has exceptionally lower [acoustic signature](/source/acoustic_signature) than the previous generation making it harder to detect by enemy vessels along with longer endurance.{{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}} The submarine has eight [VLS](/source/Vertical_launching_system) tubes in its hump, as compared to four on her predecessors— She can carry up to 24 [K-15 Sagarika](/source/Sagarika_(missile)) missiles (each with a range of {{convert|750|km|abbr=on|disp=or}}), eight [K-4 missiles](/source/K-4_(missile)) (with a range of {{convert|3500|km|abbr=on|disp=or}}) or [K-5 missiles](/source/K-5_(ballistic_missile)) (with range of 6,000 km or 3,700 mi).{{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](/source/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}}{{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}}{{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}} == Construction == Around 2012, the [S5 submarine project](/source/S5-class_submarine) to succeed and supplement the first three ''Arihant'' class submarines remained in the developmental stage. Hence, another ''Arihant''-class submarine was cleared for production as a [stopgap measure](/source/Stopgap){{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}} to avoid idling of the [production line](/source/production_line). The newly designated S4* submarine will be fourth and final submarine of the class, with an indigenous content of over 80% and equipped with K4 missiles, was thereafter launched on 16 October 2024.{{Cite news |last=Gupta |first=Shishir |date=22 October 2024 |title=India Launches 4th nuclear-missile submarine |url=https://www.hindustantimes.com/india-news/india-launches-4th-nuclear-missile-submarine-101729560730642.html |access-date=22 October 2024 |work=[Hindustan Times](/source/Hindustan_Times)}} By December 2025, the submarine entered [sea trials](/source/sea_trials). During the fourth week of the month, the vessel sailed out from her berth at the Shipbuilding Centre.{{Cite web |last=Militar |first=Redaccion Zona |date=2025-12-30 |title=India is reported to have begun sea trials of the fourth of its new Arihant-class nuclear-powered ballistic missile submarines |url=https://www.zona-militar.com/en/2025/12/30/india-is-reported-to-have-begun-sea-trials-of-the-fourth-of-its-new-arihant-class-nuclear-powered-ballistic-missile-submarines/ |access-date=2025-12-31 |website=Zona Militar |language=en-US}} == Naming == The submarine was designated as S4*, as it was an follow on order to the previous class and will be built before the tentative S5 class submarines.{{Cite web |last= |first= |date=2024-08-29 |title=INS Arighaat: How India’s 2nd nuclear submarine is major defence boost {{!}} 5 points |url=https://www.hindustantimes.com/india-news/ins-arighaat-how-india-s-2nd-nuclear-submarine-is-major-defence-boost-explained-101724938709013.html |access-date=2026-05-20 |website=Hindustan Times |language=en}}{{Cite news |last=Bhattacharjee |first=Sumit |date=2026-04-03 |title=INS Aridhaman, nuclear-powered submarine, enters India’s naval fleet |url=https://www.thehindu.com/news/national/indias-new-nuclear-powered-submarine-ins-aridhaman-commissioned/article70819744.ece |access-date=2026-05-20 |work=The Hindu |language=en-IN |issn=0971-751X}} The new unit designated as S4* would feature the stretched configuration of the third submarine of the class, {{INS|Aridhaman}}.{{cite news |last=Unnithan |first=Sandeep |date=7 December 2017 |title=A peek into India's top secret and costliest defence project, nuclear submarines |url=https://www.indiatoday.in/magazine/the-big-story/story/20171218-india-ballistic-missile-submarine-k-6-submarine-launched-drdo-1102085-2017-12-10 |url-status=live |archive-url=https://web.archive.org/web/20171211024434/http://indiatoday.intoday.in/story/india-ballistic-missile-submarine-k-6-submarine-launched-drdo/1/1104982.html |archive-date=11 December 2017 |access-date=11 December 2017 |work=[India Today](/source/India_Today)}} S4* could be commisioned in late 2027 and would enable Countinnues at-sea deterrance. The submarine may also take upp the pennent number S76. The submarine will be initially homeported in Visakapatnam before moving to INS Varsha.https://www.iiss.org/online-analysis/military-balance/2026/05/deepening-deterrence-indias-expanding-ssbn-capability/ It was also reported in January 2026, that the final submarine, so far referred to as S4*, will be named INS ''Arisudan'' upon entry into service. The name has been proposed by the ship-naming committee of the Indian Navy and is yet to be receive clearance by the defence ministry and eventually, the [President of India](/source/President_of_India), who is also the Supreme Commander of the Armed Forces.{{Cite web |date=2026-01-05 |title=Arihant class nuclear-powered submarine S4* likely to be named INS Arisudan |url=https://www.hindustantimes.com/india-news/arihant-class-nuclear-powered-submarine-s4-likely-to-be-named-ins-arisudan-101767555406284.html |access-date=2026-01-05 |website=Hindustan Times |language=en}}https://drdo.gov.in/drdo/sites/default/files/drdo_news/NPC03to05Jan2025.pdf{{Cite web |last=Bedi |first=Rahul |title=India Builds Nuclear-Powered Submarines with Ease, but Stalls on Less Complex Fleet |url=https://thewire.in/security/india-builds-nuclear-powered-submarines-with-ease-but-stalls-on-less-complex-fleet |access-date=2026-05-20 |website=The Wire |language=en}} == See also == * [Future of the Indian Navy](/source/Future_of_the_Indian_Navy) * [K Missile family](/source/K_Missile_family) ==References== {{reflist|colwidth=30em}} {{Submarines of the Indian Navy}} {{DEFAULTSORT:Arisudan}} Category:Arihant-class submarines Category:Nuclear-powered submarines Category:Ships built in India Category:Submarines of India Category:2021 ships Category:Submarine classes --- Adapted from the Wikipedia article [INS Arisudan](https://en.wikipedia.org/wiki/INS_Arisudan) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/INS_Arisudan?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.