View source for Kilo-class submarine

{{short description|Diesel electric submarine class}}
{{redirect|Kilo Class|the novel by Patrick Robinson|Kilo Class (novel)}}
{{Use dmy dates|date=August 2024}}
{{Infobox ship
| sclass = 2
|section1={{Infobox ship/image
 | image = «Краснодар».jpg
 | image_caption = Russian [[Black Sea Fleet]] Improved Kilo–class submarine ''B-265 Krasnodar'' in 2015
 }}

|section2={{Infobox ship/class overview
 | name = 
 | builders = *[[Rubin Design Bureau]]
              * [[Krasnoye Sormovo Shipyard]]
              * [[Amur Shipbuilding Plant]]
              * [[Admiralty Shipyard]]
              * [[Sevmash]]
 | operators = See ''[[#Operators|Operators]]''
 | class_before = {{sclass2|Tango|submarine|4}}
 | class_after = {{sclass2|Lada|submarine|4}}
 | subclasses = {{sclass|Sindhughosh|submarine|4}}
 | cost = 
 | built_range = 1980–present
 | in_service_range = 1980–present
 | in_commission_range = December 1980–present
 | total_ships_building =
 | total_ships_planned = 
 | total_ships_completed = 75
 | total_ships_canceled = 
 | total_ships_active = 56
 | total_ships_laid_up = 
 | total_ships_lost = 1
 | total_ships_retired = 17
 | total_ships_preserved = 1
 }}

|section3={{Infobox ship/characteristics
 | hide_header = 
 | header_caption = 
 | type = [[Attack submarine]]
 | displacement = *'''Surfaced:''' 2,325 (Project 877) – 2,350 (Project 636.3) tons
                  *'''Submerged:''' 3,075 tons full load (Project 877); 3,950 tons full load (Project 636.3)<ref name=fsgtd/><ref name=abfdsd>{{Cite web| title=ДПЛ ПРОЕКТА 636.3 - Многоцелевая дизельная подводная лодка | language=ru | trans-title=DPL PROJECT 636.3 - Multipurpose diesel submarine | url=https://pp.userapi.com/c639327/v639327924/38091/NS2cZmDNPqM.jpg | archive-url=https://web.archive.org/web/20170830234436/https://pp.userapi.com/c639327/v639327924/38091/NS2cZmDNPqM.jpg | archive-date=2017-08-30}}</ref>
 | length = *{{convert|72.6|m|ftin|abbr=on}} (Project 877); {{convert|73.8|m|ftin|abbr=on}} (Project 636.3)
 | beam = {{convert|9.9|m|ftin|abbr=on}}
 | draft = {{convert|6.2|m|ftin|abbr=on}}
 | depth = 
 | power = [[Diesel-electric]]
 | propulsion = *Diesel-electric propulsion
                *2 × 1000 kW diesel [[Electric generator|generators]]
                *1 × {{convert|5500|-|6,800|shp|kW|abbr=on}} propulsion motor
                *1 × fixed-pitch 6-bladed (Project 877) or 7-bladed (Project 636) [[propeller]]
 | speed = *'''Surfaced:''' {{convert|17|kn}}
           *'''Submerged:''' {{convert|20|kn}}
 | range = *'''With snorkel:''' {{convert|6000|–|7,500|nmi|abbr=on}} at {{convert|7|kn|abbr=on}}
           *'''Submerged:''' {{convert|400|nmi|abbr=on}} at {{convert|3|kn|abbr=on}}
           *'''Full run:''' {{convert|12.7|nmi|abbr=on}} at {{convert|21|kn|abbr=on}}
 | endurance = 45 days
 | test_depth = *'''Operational:''' {{convert|240|m|ft|abbr=on}}
                *'''Maximum:''' {{convert|300|m|ft|abbr=on}}
 | complement = 52
 | sensors = 
 | EW = 
 | armament = *6 × {{convert|533|mm|in|abbr=on|0}} [[torpedo tube]]s
              *18 [[torpedo]]es
              *4<ref name=ppu/> [[3M-54 Klub|Kalibr/Club]] [[Land-attack missile|land-attack cruise missile]], [[anti-ship missile]] and [[anti-submarine missile]] (some versions)
              *24 [[naval mine|mines]]
              *8 [[9K34 Strela-3|9K34 Strela-3 (SA-N-8 Gremlin)]] or 8 [[9K38 Igla|9K310 Igla-1 (SA-N-10 Gimlet)]] [[surface-to-air missile]]s (export submarines may not be equipped with air defense weapons)
 | armour = 
 | armor = 
 | aircraft = 
 | aircraft_facilities = 
 | notes = 
 }}
}}

[[File:Kilo-Class Russian Submarine MOD 45165129.jpg|thumb|Russian Project 877 in the English Channel in 2018]]
[[File:Kilo Submarine DN-SC-96-00528.jpg|thumb|A Russian Kilo-class submarine underway on the surface]]

The '''Kilo-class submarines''' are a group of [[diesel-electric]] [[attack submarine]]s designed by the [[Rubin Design Bureau]]<ref name=fsgtd>{{cite web |url=https://thediplomat.com/2019/10/new-russian-attack-sub-enters-sea-trials/ |title=New Russian Attack Sub Enters Sea Trials |first=Franz-Stefan |last=Gady |date=7 October 2019 |website=[[The Diplomat (magazine)|The Diplomat]]}}</ref><ref name=ppu>{{cite web |url= https://pp.userapi.com/c639327/v639327924/38091/NS2cZmDNPqM.jpg |title=АПЛ Проекта 636.3 |trans-title=Project 636.3 Nuclear Submarine |language=ru |website=pp.userapi.com |access-date=30 August 2017 |archive-url= https://web.archive.org/web/20170830234436/https://pp.userapi.com/c639327/v639327924/38091/NS2cZmDNPqM.jpg |archive-date=30 August 2017 |url-status=live}}</ref><ref name=diplomat20191122/> in the [[Soviet Union]] in the 1970s and built originally for the [[Soviet Navy]]. Since it was introduced, more than 70 Kilo class boats have been built, and around 60 were in active service as of 2023, not only in Russia but also in Algeria, Vietnam, India, Iran, Myanmar, and Poland.<ref name="USNI-2023">{{Cite journal |last=Wertheim |first=Eric |title=Russia's Kilo-class Submarine: Improved And More Deadly Than Ever |journal=[[Proceedings of the United States Naval Institute]] |date=August 2023 |volume=149/8/1,446 |url=https://www.usni.org/magazines/proceedings/2023/august/russias-kilo-class-submarine-improved-and-more-deadly-ever |archive-url=https://web.archive.org/web/20231117001008/https://www.usni.org/magazines/proceedings/2023/august/russias-kilo-class-submarine-improved-and-more-deadly-ever |archive-date=17 November 2023 |access-date=18 August 2025 }}</ref>

The first version had the Soviet designation '''Project 877 ''Paltus''''' ({{langx|ru|Па́лтус}}, meaning "[[halibut]]"), [[List of Soviet and Russian submarine classes|NATO reporting name]] '''Kilo'''.<ref name="TG14102024">{{cite web |url= https://www.navalnews.com/naval-news/2024/10/russia-launches-final-project-636-3-submarine-for-pacific-fleet/ |title= Russia launches Final Project 636.3 Submarine for Pacific Fleet |author= Tomasz Grotnik |date=14 October 2024|website= Naval News}}</ref> They entered operational service in 1980 and continued being built until the mid-1990s, when production switched to the more advanced '''Project 636 ''Varshavyanka''''' variant, also known in  [[Western Bloc|the West]] as the '''Improved Kilo''' class.<ref>Gardiner, Chumbley and Budzbon (1995), pp. 408-409.</ref><ref>{{cite web |url= https://www.armyrecognition.com/news/navy-news/2023/algeria-navy-may-receive-2-new-russian-improved-kilo-class-submarines |title= Algeria Navy may receive 2 new Russian Improved Kilo-class submarines. |author= <!--Not stated--> |date=8 August 2023|website= Army Recognition}}</ref><ref>Darman (2004), p. 46.</ref> The design was updated again by the Russian Navy in the mid-2010s, to a variant called '''Project 636.3''', also known as '''Improved Kilo II'''.<ref name="TG14102024" /> Due to the delays and other problems with the successor {{sclass|Lada|submarine}}, the Improved Kilo II has been built in larger numbers, with several more units under construction as of 2023.<ref name="USNI-2023" />

== Role ==
The Project 877 attack submarines were mainly intended for [[Anti-surface warfare|anti-shipping]] and [[anti-submarine warfare|anti-submarine]] operations in relatively shallow waters. Original Project 877 boats are equipped with Rubikon MGK-400 sonar system (with [[NATO reporting name]] Shark Gill), which includes a mine detection and avoidance sonar MG-519 Arfa (with NATO reporting name Mouse Roar).

Newer Project 636 boats are equipped with improved MGK-400EM, with MG-519 Arfa also upgraded to MG-519EM. MGK 400E can detect submarines with 0.05 Pa/Hz noisiness in {{cvt|16|km}} and surface vessels with 10 Pa/Hz noisiness in {{cvt|100|km}}.<ref>{{cite web |url=http://roe.ru/eng/catalog/naval-systems/shipborne-electronic-systems/mgk-400/ |title=MGK-400EM Sonar |website=[[Rosoboronexport]] |access-date=18 July 2020}}</ref> The improved sonar systems have reduced the number of operators needed by sharing the same console via automation.

[[Anechoic tile]]s are fitted on casings and fins to absorb the sound waves of active sonar, which results in a reduction and distortion of the return signal.<ref>Anechoic tiles are fitted on casings and fins to absorb the sonar sound waves of active sonar, which results in a reduction and distortion of the return signal.</ref> These tiles also help attenuate sounds that are emitted from the submarine, thus reducing the range at which the submarine may be detected by [[passive sonar]].<ref>{{cite web |url=http://www.russiafile.com/kilo.htm |title=Kilo-class Submarines |website=Russiafile.com |access-date=29 October 2008 |archive-url=https://web.archive.org/web/20150924092844/http://www.russiafile.com/kilo.htm |archive-date=24 September 2015 |url-status=dead}}</ref>

Project 636 and 636.3 submarines can launch [[Kalibr]] (and their Club export version) cruise missiles. It was reported in September 2022 that they can carry four Kalibr missiles, and can launch them through two of their six torpedo tubes.<ref name=sutton/>

==History==
Kilo-class attack submarines began entering service with the [[Soviet Navy]] from 12 September 1980. They were originally intended for the [[Warsaw Pact]] nations, which is why their Russian nickname is ''Varshavyanka'' (woman from Warsaw). Among the first to be built, 13 were from the [[Krasnoye Sormovo Factory No. 112]] in [[Nizhny Novgorod]], and nine were from [[Amur Shipbuilding Plant]] in [[Komsomolsk-on-Amur]]. After the [[dissolution of the Soviet Union]], another two Project 877 submarines were built for the [[Russian Navy]] in the 1990s. The Krasnoye Sormovo facility partnered with [[Admiralty Shipyards]] in [[Saint Petersburg]] to built 21 boats for foreign buyers (as of 2001), which included China, India, Algeria, Iran, Poland, and Romania, for a total of 45 units. Modified units for export were designated Project 877E, and those made for tropical waters were Project 877EKM. Another variant, Project 636 (NATO: Improved Kilo), was quieter, faster, and had better detection capabilities. Initially intended for Soviet use, it was made avaliable for export in 1993.<ref name="ColdWarSubmarines">{{Cite book |last1=Polmar |first1=Norman |last2=Moore |first2=K. J. |author-link=Norman Polmar |title=Cold War Submarines: The Design and Construction of U.S. and Soviet Submarines, 1945–2001 |location=Dulles, Virginia |publisher=Potomac Books Inc. |pages=214―218 |year=2003 |isbn=1-57488-594-4}}</ref> 

A single Project 877 submarine, {{ship|Russian submarine|B-871||2}} ''Alrosa'', is equipped with [[pump-jet]] propulsion, instead of a [[propeller]].<ref>{{cite web |url=http://www.alrosa.net/eng/ |title=Kilo Class Submarine "Alrosa": Black Sea Fleet, Russian Federation |website=Alrosa.net |access-date=8 March 2014 |url-status=usurped |archive-url= https://web.archive.org/web/20080603220020/http://www.alrosa.net/eng/ |archive-date=3 June 2008}}</ref> It has been retrofitted for the Kalibr missile.<ref name="newdick">{{cite news |last1=Newdick |first1=Thomas |title=Russia's Only Pump-Jet Kilo Class Submarine Is Back To Attack Ukraine |url=https://www.thedrive.com/the-war-zone/russias-only-pump-jet-kilo-class-submarine-is-back-to-attack-ukraine |agency=The Drive |publisher=Recurrent Ventures |date=28 June 2022}}</ref> Its modification was started in 1990 and was not completed until 2000. When it returned to service, it was the only operational submarine in the Black Sea Fleet at the time.<ref name="ColdWarSubmarines" />

It was planned for the Improved Kilo-class (Project 636) to be succeeded by the {{sclass2|Lada|submarine|4}} (Project 677) in [[Russian Navy]] service. On 26 December 1997, two boats, one for Russia and one intended for India, were laid down.<ref name="ColdWarSubmarines" /> However, by November 2011 it was apparent that the Lada class would be delayed because {{ship|Russian submarine|Sankt Peterburg||2}}, the lead boat of the class, had shown major deficiencies. On 27 July 2012, the Russian Navy commander-in-chief announced that construction of the Lada-class submarines would resume, having undergone design changes.{{cn|date=February 2023}} Series production was reported to be underway in the latter 2010s.<ref>{{cite news |url=https://www.naval-technology.com/projects/project-677-lada-class-project-1650-amur-class-submarines/ |title=Project 677 Lada Class / Project 1650 Amur Class Submarines |newspaper=Naval Technology}}</ref>{{update after|2014}}<!-- so what happened after 2014?  is this even still real?  any sources in, say, 2016 or later that show the Russian Navy is still actively fielding the Lada class? -->

The Russian Navy also moved forward with the construction of Project 636.3, also known as Improved Kilo II, the result of further modifications.<ref name="USNI-2023" /> The class "is slightly longer in length — the sub's submerged displacement is around 4,000 tons — and features improved engines, an improved combat system, as well as new noise reduction technology; it can fire both torpedoes and [[cruise missiles]], launched from one of six 533-millimeter torpedo tubes."<ref name=fsgtd/>  The class has a seven-bladed propeller, instead of the six-bladed propeller of the Project 877 class.<ref name=newdick/> In 2010 construction began on the first unit of the Improved Kilo II, {{ship|Russian submarine|Novorossiysk||2}}, which was part of a batch of six submarines built for the [[Black Sea Fleet]]. The last of this group was delivered in 2016. Another six were ordered for the [[Pacific Fleet (Russia)|Pacific Fleet]], with the first entering service in 2019,<ref name="USNI-2023" /><ref name=diplomat20191122>{{cite web |url=https://thediplomat.com/2019/11/first-project-636-3-kilo-class-attack-sub-to-enter-service-with-russias-pacific-fleet-this-month/ |title=First Project 636.3 Kilo-Class Attack Sub to Enter Service With Russia's Pacific Fleet This Month |date=22 November 2019 |first=Franz-Stefan|last=Gady |website=The Diplomat}}</ref> {{ship|Russian submarine|Petropavlovsk-Kamchatsky||2}}.<ref>{{Cite web |last=Novichkov |first=Nikolai |title=Russia lays keels of two new diesel-electric submarines |date=1 November 2019 |work=[[Jane's Information Group]] |url=https://www.janes.com/osint-insights/defence-news/russia-lays-keels-of-two-new-diesel-electric-submarines |archive-url=https://web.archive.org/web/20240718230719/https://www.janes.com/osint-insights/defence-news/russia-lays-keels-of-two-new-diesel-electric-submarines |archive-date=18 July 2024 |access-date=20 December 2025 }}</ref> The last of these was scheduled to be delivered in 2025.<ref name="Seapower" />

In June 2022, an unconfirmed report from within Russia's defense industry suggested that a further tranche of six additional Project 636.3 vessels might be ordered to start construction in around 2024.<ref name="USNI-2023" /><ref>{{cite web | url=https://tass.com/defense/1465805 | title=Shipbuilders to build a series of Project 636.3 submarines for Russia's Northern Fleet |website=tass.com}}</ref> That year the first boat for the [[Northern Fleet]] was laid down, {{ship|Russian submarine|Mariupol||2}}, with all six of them to be named after cities in [[Russian-occupied territories of Ukraine|Russian-annexed parts of Ukraine]].<ref name="Barents-Ru-2025">{{Cite web |title=Украинский морской дрон вывел из строя российскую субмарину. 6 похожих подлодок прибудут на Северный флот |trans-title=Ukrainian drone removed from service Russian submarine. 6 similar submarines will join Northern Fleet |date=19 December 2025 |access-date=20 December 2025 |work=The Barents Observer |last=Staalesen |first=Atle |lang=ru |url=https://ru.thebarentsobserver.com/ukrainskij-morskoj-dron-vyvel-iz-stroa-rossijskuu-submarinu-6-pohozih-podlodok-pribudut-na-severnyj-flot/442541 }}</ref>

== Specifications ==
{{Prose|section|date=November 2024}}
[[File:Kilo class SS.svg|thumb|Schematic drawing of Kilo-class submarine]]
There are several variants of the Kilo class. The information below is the smallest and largest number from the available information for all three main variants of the boat.<ref name="fas.org">{{cite web |url=https://fas.org/man/dod-101/sys/ship/row/rus/877.htm |title=Project 877 / 636 Kilo class diesel-electric torpedo submarine |website=FAS.org |access-date=28 September 2011 |archive-url=https://web.archive.org/web/20111027003329/http://www.fas.org/man/dod-101/sys/ship/row/rus/877.htm |archive-date=27 October 2011 |url-status=dead}}</ref>

* Displacement:
** 2,300–2,350 tons surfaced
** 3,000–4,000 tons submerged
* Dimensions:
** Length: 70–74 meters
** Beam: 9.9 meters
** Draft: 6.2–6.5 meters
* Maximum speed
** 10–12 knots surfaced (18–22&nbsp;km/h)
** 17–25 knots submerged (31–46&nbsp;km/h)
* Propulsion: Diesel-electric {{convert|5900|shp|abbr=on}}
* Maximum depth: 300 meters (240–250 meters operational)
* Endurance
** {{convert|400|nmi|km|-2}} at {{convert|3|kn|km/h|0}} submerged
** {{convert|6000|nmi|km|-3}} at {{convert|7|kn|km/h|0}} snorkeling (7,500 miles for the Improved Kilo class)
** 45 days sea endurance
* Armament
** Air defence: 8 [[9K34 Strela-3|Strela-3]] or 8 [[9K38 Igla|Igla-1]], but after sea trial it{{which|date=June 2022}}<!-- which of the two? or both? --> was rejected by the navy.{{citation needed|date=June 2022}}
** Six 533&nbsp;mm torpedo tubes with 18 [[53-65]] ASuW or TEST 71/76 ASW [[torpedo]]es or [[VA-111 Shkval]] [[Supercavitation|supercavitating]] torpedoes, or 24 DM-1 mines,
* Crew: 52
* Price per unit is US$200–250&nbsp;million (China paid about US$1.5–2&nbsp;billion for 8 Project 636 Kilo-class submarines){{when|date=June 2022}}{{citation needed|date=June 2022}}

== Operational history ==
At the beginning of 2014, the Chinese PLA Navy held an emergency combat readiness test.<ref>{{cite web |title = Courage and bloodiness have always been the backbone of soldiers and the edge of victory. |url = http://news.mod.gov.cn/pla/2014-10/22/content_4545847.htm |author=Wang Tao |date= 2014-10-22 |website=PRC Ministry of National Defense |access-date=2018-07-13 |archive-date= 2018-07-13 |archive-url = https://web.archive.org/web/20180713143304/http://news.mod.gov.cn/pla/2014-10/22/content_4545847.htm |url-status=live }}</ref> The Kilo-class submarine ''Yuanzheng 72'', deployed on a combat readiness voyage encountered a "cliff" caused by a sudden change in seawater density. Because the seawater density suddenly decreased, the submarine lost its buoyancy and rapidly descended. The pressure on the submarine increased sharply, and the main engine room pipeline was damaged, and water entered.  The vessel lost power due to a large amount of water entering the main engine room. The crew reacted quickly, and the submarine resurfaced in three minutes, avoiding a disastrous descent to the [[seabed]], which was more than {{convert|3000|m}} deep. The voyage was notable for creating many firsts for PLAN's submarine service.<ref>{{cite web |title = South China Sea Fleet submarine suddenly lost buoyancy during a voyage and encountered the most dangerous 3 minutes |url = http://news.ifeng.com/a/20140409/35582388_0.shtml |date=2014-04-09 |website=凤凰网 |access-date=2018-07-13 |archive-date=2018-07-13 |archive-url = https://web.archive.org/web/20180713143237/http://news.ifeng.com/a/20140409/35582388_0.shtml |url-status=live}}</ref><ref>{{cite web |title = Media reveals military awards: Most awards are related to "aircraft carriers" |url = http://sc.people.com.cn/n/2014/0901/c345460-22169825-3.html |date=2014-09-01 |website=人民网 |access-date=2018-07-13 |archive-date=2018-07-13 |archive-url= https://web.archive.org/web/20180713142540/http://sc.people.com.cn/n/2014/0901/c345460-22169825-3.html |url-status=live }}</ref>

In 2015, five Kilo-class submarines were deployed to the [[Russian naval facility in Tartus]], Syria. At least two of the units reportedly attacked land targets inside Syria with 3M54 Kalibr cruise missiles (NATO designation: SS-N-27A "Sizzler").<ref name=diplomat20191122/> 8 December 2015 marked the first time a Kilo-class submarine fired cruise missiles against an enemy. {{ship|Russian submarine|Rostov-na-Donu||2}} struck two targets near the [[ISIS]] capital of [[Raqqa]] by the missile attack.<ref>{{cite web |last1=Rogoway |first1=Tyler |title=Russia Launches Cruise Missiles At Syria From Submarine In The Mediterranean |url=https://jalopnik.com/russia-launches-cruise-missiles-at-syria-from-submarine-1746931031 |website=jalopnik.com |date=8 December 2015}}</ref> The ''B-237 Rostov-on-Don'' transited the [[Dardanelles]] on its way back to the [[Black Sea]] on 12 February 2022.<ref>{{cite web |last1=Ozberk |first1=Tayfun |title=Russia's Improved Kilo-Class Submarine Entering Black Sea |url=https://www.navalnews.com/naval-news/2022/02/russias-improved-kilo-class-submarine-entering-black-sea/ |work=Naval News |date=12 February 2022}}</ref>

''B-871 Alrosa'', a pump-jet Kilo class, which derives from the Project 877 hull, participated in the [[Russo-Ukraine War]]. 

Since the start of the [[Russian invasion of Ukraine]] in 2022, the Kilo class submarines of the Black Sea Fleet have participated in the conflict, firing Kalibr cruise missiles into Ukraine.<ref name="USNI-2023" /> After the sinking of the {{ship|Russian cruiser|Moskva}} in April 2022, it was remarked that the Kilo-class subs were the only members of the Black Sea Fleet whose orders did not prohibit venturing into Ukrainian waters near [[Odesa]] during the [[Russian invasion of Ukraine]].<ref>{{cite news |last1=Axe |first1=David |title=Russian Navy Crews Are Under Orders To Avoid The Ukrainian Coast |url=https://www.forbes.com/sites/davidaxe/2022/08/18/russian-navy-crews-are-under-orders-to-avoid-the-ukrainian-coast/?sh=2ccaff076946 |work=Forbes |date=28 August 2022}}</ref> In September 2022, after the early [[2022 Crimea attacks]], the UK [[Ministry of Defence (United Kingdom)|Ministry of Defence]] said that the Kilo-class submarines were moved from Sevastopol to the [[Port of Novorossiysk]] in [[Krasnodar Krai]].<ref>{{cite news |last1=Mongilio |first1=Heather |title=Russian Navy Moving Kilo Attack Boats to Safety from Ukraine Strike Risk, Says U.K. MoD |url=https://news.usni.org/2022/09/20/russian-navy-moving-kilo-attack-boats-to-safety-from-ukraine-strike-risk-says-u-k-mod |work=USNI News |date=20 September 2022}}</ref><ref name="sutton">{{cite web |last1=Sutton |first1=H I |title=Russian Navy Kilo Class Submarines Retreating From Crimea |url=https://www.navalnews.com/naval-news/2022/09/russian-navy-kilo-class-submarines-retreating-from-crimea/ |work=Naval News |date=14 September 2022}}</ref>

On 13 September 2023, ''B-237 Rostov-on-Don'' was severely damaged by a Ukrainian [[Storm Shadow]] missile strike while it was drydocked in Sevastopol.<ref>{{Cite news |last1=Barnes |first1=Joe |last2=Kilner |first2=James |date=13 September 2023 |title=Russian submarine hit by British Storm Shadow missile strike |language=en-GB |work=The Telegraph |url=https://www.telegraph.co.uk/world-news/2023/09/13/ukraine-major-attack-russia-black-sea-fleet-crimea/ |access-date=13 September 2023 |issn=0307-1235}}</ref><ref>{{cite web |url=https://www.navalnews.com/naval-news/2023/09/ukraines-attack-on-sevastopol-also-targeted-important-ships-crossing-black-sea/ |title=Ukraine's Attack On Sevastopol Also Targeted Important Ships Crossing Black Sea |work=Naval News |date=14 September 2023}}</ref><ref>{{Cite web |first1=Yulia |last1=Kesaieva |first2=Andrew |last2=Carey |first3=Mariya |last3=Knight |first4=Jessie |last4=Yeung |date=15 September 2023 |title=Ukraine identifies ships hit in Sevastopol attack, claiming 'irreparable loss' to Russia |url=https://www.cnn.com/2023/09/14/europe/ukraine-sevastopol-attack-russian-ships-identified-intl-hnk/index.html |access-date=15 September 2023 |website=CNN}}</ref>
According to satellite images taken in June 2024, the submarine was moved to a lesser used dry dock within the port (at coordinates 44.609975029014116, 33.537496816089906). Camouflage nets were, at least initially, thrown up to disguise its presence and to make observation more challenging. According to reports, the submarine is under repair.<ref name="auto">{{Cite web |last=Sutton |first=H. I. |date=7 June 2024 |title=Russian Submarine Hit By Missiles Now In New Hiding Place In Sevastopol |url=https://www.navalnews.com/naval-news/2024/06/russian-submarine-hit-by-missiles-now-in-new-hiding-place-in-sevastopol |access-date=7 June 2024 |website=Naval News}}</ref>

On 2 August 2024, Ukrainian Forces launched a strike against a Russian submarine and an [[S-400]] air defense system in [[Crimea]]. Ukrainian sources claimed that the submarine ''B-237 Rostov-on-Don'' was "sunk on the spot" in the attack.<ref>{{cite web |url=https://defence-blog.com/ukrainian-missiles-destroy-russian-submarine-in-sevastopol/ |title=Ukrainian missiles destroy Russian submarine in Sevastopol |website=Defence Blog |last=Malyasov |first=Dylan |date=3 August 2024 |access-date=4 August 2024}}</ref><ref>{{cite web |url=https://www.politico.eu/article/russia-submarine-sunk-by-ukraine-military-claims/ |title=Ukraine claims sinking of Russia sub in Sevastopol |work=Politico |last=Pollet |first=Mathieu |date=3 August 2024 |access-date=4 August 2024}}</ref><ref>{{cite web |url=https://www.bbc.com/news/articles/c4nggvg1yggo |title=Ukraine says it sank Russian submarine in Crimea |work=BBC News |last=Murphy| first=Matt |date=3 August 2024 |access-date=4 August 2024}}</ref><ref>{{cite web |url=https://www.dw.com/en/ukraine-updates-ukraine-says-it-sank-russian-sub-in-crimea/live-69848035 |title=Ukraine updates: Ukraine says it sank Russian sub in Crimea |work=Deutsche Welle |date=3 August 2024 |access-date=4 August 2024}}</ref><ref>{{cite web |url=https://static.ukrinform.com/photos/2024_08/thumb_files/630_360_1722693197-643.jpghttps://kyivindependent.com/general-staff-says-russias-black-sea-fleet-submarine-sunk-after-successfully-hit/ |title=Ukraine's military says it sunk Russian Black Sea Fleet submarine, damaged S-400 missile system in 'successful hit' |work=Kyiv Independent |date=3 August 2024 |access-date=4 August 2024 }}{{Dead link|date=July 2025 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> Other sources claim that the submarine was only hit and not sunk.<ref>{{cite web |url=https://www.ukrinform.net/rubric-ato/3891715-ukraine-hits-russias-rostovondon-submarine-s400-air-defense-system-in-sevastopol.html |title=Ukraine hits Russia's Rostov-on-Don submarine, S-400 air defense system in Sevastopol |work=Ukrinform.net |date=3 August 2024 |access-date=4 August 2024}}</ref> Satellite images showed the that camouflage nets were burned out by the strike.<ref>{{cite web |url=https://www.ukrinform.net/rubric-ato/3891734-russian-submarine-destruction-satellite-images-show-impact-site-in-crimea.html |title=Russian submarine destruction: satellite images show impact site in Crimea |website=Ukrinform.net |date=3 August 2024 |access-date=4 August 2024}}</ref>

In September 2025, the Project 636.3 boat, ''Novorossiysk'' (B-261), reportedly suffered serious damage as the result of a fuel system malfunction while operating in the Mediterranean.<ref>{{cite web |url=https://united24media.com/latest-news/russian-submarine-and-corvette-sustain-major-damage-heres-what-we-know-12008 |title=Russian Submarine and Corvette Sustain Major Damage. Here's What We Know |website=United 24 Media |date=27 September 2025 |access-date=28 September 2025 |last= Khomenko |first=Ivan}}</ref>

[[File:Port of Novorossiysk Kilo-class explosion.png|thumb|December 2025 explosion in the Port of Novorossiysk]]
In December 2025, the [[Security Service of Ukraine]] published a video showing an explosion near an unnamed Kilo-class submarine in the [[Port of Novorossiysk]], claiming that the submarine was struck by a "[[Sea Baby|Sub Sea Baby]]" drone.<ref>{{Cite web |last=Mukhina |first=Olena |date=2025-12-15 |title=For first time in history, Sub Sea Baby drones sink $400 million Russian submarine that terrorized Ukrainian cities (VIDEO) |url= https://euromaidanpress.com/2025/12/15/for-first-time-ukraines-advanced-underwater-drones-sink-400-million-russian-submarine-that-terrorized-ukrainian-cities/ |access-date= 2025-12-15 |website=Euromaidan Press |language= en-US}}</ref> Satellite imagery published after the attack showed that the drone struck a pier 20 meters off the stern, with no apparent damage to the submarine.<ref>{{Cite web |last=Trevithick |first=Thomas Newdick, Joseph |date=2025-12-16 |title=Aftermath of Ukraine’s Underwater Drone Attack on Russian Submarine Seen in Satellite Imagery |url= https://www.twz.com/news-features/aftermath-of-ukraines-underwater-drone-attack-on-russian-submarine-seen-in-satellite-imagery |access-date=2025-12-17 |website=The War Zone |language=en-US}}</ref><ref>{{Cite web |last= Epstein |first=Jake |title=Satellite images show Russia fortified a port against Ukrainian drone boats. One broke through underwater and exploded. |url= https://www.businessinsider.com/images-show-russia-fortified-port-before-ukrainian-drone-attacked-submarine-2025-12 |access-date= 2025-12-17 |website=Business Insider |language= en-US}}</ref><ref>{{Cite web |last=Grace |first= Adam |date=2025-12-17 |title=Russian Offensive Campaign Assessment, December 16, 2025 |url= https://understandingwar.org/research/russia-ukraine/russian-offensive-campaign-assessment-december-16-2025/ |access-date=2025-12-17 |website=Institute for the Study of War |language=en-US}}</ref> The UK [[Ministry of Defence (United Kingdom)|Ministry of Defence]] considered it highly likely that the attacked submarine was the [[Russian submarine Kolpino|B-271 Kolpino]], noted that {{asof|2025|12|18|lc=yes}} the submarine was docked where it was attacked and considered it likely that the attack had significantly damaged the submarine, leaving it unable to deploy or sail of its own accord.<ref name="UKMoD-20251220">{{cite tweet|author-link= Ministry of Defence (United Kingdom) |user= DefenceHQ |number= 2002288007110430949 |title= Latest Defence Intelligence update on the situation in Ukraine - 20 December 2025}}</ref>

== Operators ==
The first submarine entered service in the [[Soviet Navy]] in 1980, and the class remains in use with the Russian Navy today; around 5 original Kilo-class vessels believed to still be in active service with the Russian Navy (as of 2025), while new Improved Kilo–class subs are being delivered through the 2020s to replace them. About forty vessels have been exported to several countries:

* {{ALG}}
**{{navy|ALG}}: 2 original Kilo (Project 877), 4 Improved Kilo (Project 636).<ref>{{cite web |url=http://www.country-data.com/cgi-bin/query/r-479.html |title=Algeria – Navy |date=December 1993 |website=Country-data.com |access-date=28 September 2011 |archive-url=https://web.archive.org/web/20120318172435/http://www.country-data.com/cgi-bin/query/r-479.html |archive-date=18 March 2012 |url-status=live}}</ref><ref>{{cite web |url=http://www.navyrecognition.com/index.php?option=com_content&task=view&id=627 |title=Algeria looking to procure two additional Improved Kilo Project 636M Diesel Submarines from Russia |website=NavyRecognition.com |date=24 September 2012 |access-date=8 March 2014 |archive-url=https://web.archive.org/web/20131012024038/http://www.navyrecognition.com/index.php?option=com_content&task=view&id=627 |archive-date=12 October 2013 |url-status=live}}</ref><ref>{{cite web |url=http://vpk-news.ru/news/2509/ |script-title=ru:Алжир может закупить российские подводные лодки |trans-title=Algeria may buy Russian submarines |language=ru |website=Vpk-news.ru |access-date=8 March 2014 |archive-url=https://web.archive.org/web/20131012195125/http://vpk-news.ru/news/2509/ |archive-date=12 October 2013 |url-status=live|title= }}</ref><ref>{{cite web |url=http://lenta.ru/news/2012/09/19/subs/ |title=Наука и техника: Алжир докупит у России две "Варшавянки" |trans-title=Science and Technology: Algeria will buy two Varshavyanks from Russia |language=ru |website=Lenta.ru |access-date=8 March 2014 |archive-url=https://web.archive.org/web/20131012083315/http://lenta.ru/news/2012/09/19/subs/ |archive-date=12 October 2013 |url-status=live}}</ref><ref>{{cite web |url=http://www.armstrade.org/files/analytics/315.pdf |title=Аналитическая Записка: Статистика Мирового Экспорта Военно-Морской Техники В Ближнесрочной Перспективе |trans-title=Policy Brief: Short Term Global Naval Equipment Export Statistics |language=ru |date=2013 |website=Центр анализа мировой торговли оружием [World Arms Trade Analysis Center] |access-date=8 March 2014 |archive-url=https://web.archive.org/web/20131014052040/http://www.armstrade.org/files/analytics/315.pdf |archive-date=14 October 2013 |url-status=live}}</ref><ref>{{cite web |url=http://www.km.ru/economics/2012/09/19/692626-alzhir-zakazal-rosoboroneksportu-dve-podvodnye-lodki |title=Алжир заказал Рособоронэкспорту две подводные лодки |trans-title=Algeria orders two submarines from Rosoboronexport |language=ru |website=KM.ru |date=19 September 2012 |access-date=8 March 2014 |archive-url=https://web.archive.org/web/20131014143908/http://www.km.ru/economics/2012/09/19/692626-alzhir-zakazal-rosoboroneksportu-dve-podvodnye-lodki |archive-date=14 October 2013 |url-status=live}}</ref> 
* {{PRC}}
**{{navy|PRC}}: 2 original Kilo (Project 877), 10 Improved Kilo (Project 636).<ref>{{cite web |url=http://www.sinodefence.com/navy/sub/kilo.asp |title=Kilo Class (Project 636/877EKM) Diesel-Electric Submarine |website=SinoDefence.com |date=23 February 2009 |access-date=28 September 2011 |url-status=dead |archive-url=https://web.archive.org/web/20070223074353/http://sinodefence.com/navy/sub/kilo.asp |archive-date=23 February 2007}}</ref><ref name="Naval Technology">{{cite web |url=http://www.naval-technology.com/projects/kilo877/ |title=SSK Kilo Class (Type 877EKM) Attack Submarine |website=Naval Technology |access-date=28 September 2011 |archive-url=https://web.archive.org/web/20110916235157/http://www.naval-technology.com/projects/kilo877/ |archive-date=16 September 2011 |url-status=live}}</ref>
* {{IND}}
**{{navy|IND}}: 10 original Kilo (Project 877), 1 sustained major casualty<ref name="fas.org"/><ref>{{cite web |url=http://www.bharat-rakshak.com/NAVY/Sindhugosh.html |title=Sindhugosh (Kilo) Class |date=16 January 2008 |website=Bharat Rakshak |url-status=dead |archive-url=https://web.archive.org/web/20090308035846/http://www.bharat-rakshak.com/NAVY/Sindhugosh.html |archive-date=8 March 2009}}</ref> – designated as the {{sclass|Sindhughosh|submarine|4}}
* {{MYA}}
**{{navy|MYA}}: one boat transferred from [[Indian Navy]] by March 2020.<ref>{{cite web |url=https://www.navyrecognition.com/index.php/news/defence-news/2019/july/7327-myanmar-to-receive-its-first-kilo-class-submarine-from-india.html |title=Myanmar to receive its first Kilo class submarine from India |date=July 2019 |website=NavyRecognition.com}}</ref><ref>{{cite web |url=https://www.janes.com/defence-news/news-detail/myanmar-navy-showcases-newly-acquired-submarine-in-fleet-exercise-bandoola |title=Myanmar Navy showcases newly acquired submarine in Fleet Exercise Bandoola |first=Mrityunjoy |last=Mazumdar |date=19 October 2020 |website=[[Janes Information Services|Jane's]]}}</ref>
* {{POL}}
**{{navy|POL}}: 1 original Kilo (Project 877) – {{ORP|Orzeł|1986|6}}.<ref>{{cite web | url=https://www.navalnews.com/naval-news/2024/03/polands-only-submarine-returns-to-the-depths/ | title=Poland's Only Submarine Returns To The Depths… |work=Naval News |date=12 March 2024 |access-date=13 March 2024}}</ref><ref>{{cite web |url=http://www.navy.mw.mil.pl/index.php?akcja=orzel |title=Okręt Podwodny Typu Kilo (Proj. 877E) |trans-title=Type Kilo Submarine (Project 877E) |language=pl |website=Polish Navy |access-date=28 September 2011 |archive-url=https://web.archive.org/web/20180120055844/http://www.navy.mw.mil.pl/index.php?akcja=orzel |archive-date=20 January 2018 |url-status=dead}}</ref>
* {{IRN}}
**{{navy|IRI}}: 3 original Kilo (Project 877).<ref name="Naval Technology"/>
* {{ROU}}
**{{navy|ROU}}: 1 original Kilo (Project 877) – {{ship|Romanian submarine|Delfinul}} (not operational).{{citation needed |date=April 2018}}
* {{RUS}}
**{{navy|RUS}}: 5 original Kilo (Project 877) (status of 4 others, 2 Pacific & 2 Northern Fleet unclear), 12 Improved Kilo (Project 636.3)<ref>{{cite news |url=http://navaltoday.com/2016/11/24/russian-navy-commissions-sixth-project-636-3-varshavyanka-class-submarine/ |title=Russian Navy commissions sixth Project 636.3 Varshavyanka-class submarine |work=[[Navaltoday.com]] |date=24 November 2016 |access-date=27 January 2017 |archive-url=https://web.archive.org/web/20170129091828/http://navaltoday.com/2016/11/24/russian-navy-commissions-sixth-project-636-3-varshavyanka-class-submarine/ |archive-date=29 January 2017 |url-status=live}}</ref> delivered as of 2025.<ref>{{cite web |url=http://www.navyrecognition.com/index.php/news/defence-news/2016/january-2016-navy-naval-forces-defense-industry-technology-maritime-security-global-news/3476-russian-navy-orders-6-project-6363-improved-kilo-ssk-to-boost-pacific-fleet-submarine-force.html |title=Russian Navy Orders 6 Project 636.3 Improved Kilo SSK to Boost Pacific Fleet Submarine Force |website=NavyRecognition.com |date=20 January 2016 |access-date=4 September 2016 |archive-url=https://web.archive.org/web/20160905150230/http://www.navyrecognition.com/index.php/news/defence-news/2016/january-2016-navy-naval-forces-defense-industry-technology-maritime-security-global-news/3476-russian-navy-orders-6-project-6363-improved-kilo-ssk-to-boost-pacific-fleet-submarine-force.html |archive-date=5 September 2016 |url-status=live}}</ref><ref>{{cite web | title=На Адмиралтейских верфях состоялась церемония передачи ВМФ подлодки «Якутск» – Коммерсантъ Санкт-Петербург | website=Коммерсантъ | date=2025-06-11 | url=https://www.kommersant.ru/doc/7797057 | language=ru | ref={{sfnref|Коммерсантъ|2025}} | access-date=2025-06-14}}</ref> up to six additional Project 636.3 intended to replace remaining Project 877 units; first three ordered in 2023.<ref>{{Cite web |url=https://thebarentsobserver.com/en/security/2023/07/new-submarine-northern-fleet-will-be-named-mariupol |title=New submarine for Northern Fleet will be named "Mariupol" |first=Atle |last= Staalesen |date=10 July 2023 |website=The Barents Observer}}</ref><ref>{{cite web |url=https://www.navyrecognition.com/index.php/news/defence-news/2020/august/8904-russian-navy-signs-contract-during-army-2020-forum-for-two-more-diesel-submarines.html |title=Russian Navy signs contract during Army 2020 forum for two more diesel submarines |date=August 2020 |website=NavyRecognition.com}}</ref><ref>{{Cite news |url=https://www.vedomosti.ru/politics/articles/2020/08/25/837739-minfin-roskosmos |title=Минфин и "Роскосмос" вступили в публичные препирательства о сокращении расходов |trans-title=The Ministry of Finance and "Roscosmos" entered into a public altercation about cutting costs |first=Alexey |last=Nikolsky |date=6 August 2020 |newspaper=[[Vedomosti]] |language=ru}}</ref> 
* {{VIE}}
**{{navy|VIE}}: 6 Improved Kilo (Project 636)<ref>{{cite web |url=http://rusnavy.com/news/navy/index.php?ELEMENT_ID=9667 |title=Russia dominates Asian market with 28 diesel subs |website=Rusnavy.com |date=15 December 2009 |access-date=28 September 2011 |archive-url=https://web.archive.org/web/20111015070353/http://rusnavy.com/news/navy/index.php?ELEMENT_ID=9667 |archive-date=15 October 2011 |url-status=dead}}</ref><ref>{{cite web |url=http://news.xinhuanet.com/english/world/2014-01/02/c_133012376.htm |title=Vietnam receives first Russian-made submarine |website=[[Xinhua News Agency]] |date=2 January 2014 |access-date=4 January 2014 |archive-url=https://web.archive.org/web/20140109051833/http://news.xinhuanet.com/english/world/2014-01/02/c_133012376.htm |archive-date=9 January 2014 |url-status=dead}}</ref><ref>{{cite news |url=http://vovworld.vn/en-US/News/Last-Kilo-submarine-arrives-at-Cam-Ranh-Port/506623.vov |title=Last Kilo submarine arrives at Cam Ranh Port |work=[[Voice of Vietnam]] |date=21 January 2017 |access-date=27 January 2017 |archive-url=https://web.archive.org/web/20170202123531/http://vovworld.vn/en-US/News/Last-Kilo-submarine-arrives-at-Cam-Ranh-Port/506623.vov |archive-date=2 February 2017 |url-status=live}}</ref> – {{ship|Vietnamese submarine|Hồ Chí Minh City||2}}, {{ship|Vietnamese submarine|Hà Nội||2}}, {{ship|Vietnamese submarine|Hải Phòng||2}}, {{ship|Vietnamese submarine|Đà Nẵng||2}}, {{ship|Vietnamese submarine|Khánh Hoà||2}}, {{ship|Vietnamese submarine|Bà Rịa-Vũng Tàu||2}}.

=== Possible purchasers ===
The government of Venezuela expressed interest since 2005 in acquiring nine AIP-powered conventional submarines, either the German U214 or later the Amur 1650. There was a Russian counteroffer due to technical issues at the shipyards back then, for five Project 636 Kilo-class and four Amur 1650, but it hasn't gone through yet.<ref>{{Cite web |title=Venezuela y la renovación de su fuerza submarina. Una asignatura pendiente |url=https://www.infodefensa.com/texto-diario/mostrar/3118699/venezuela-renovacion-fuerza-submarina-asignatura-pendiente |access-date=27 December 2023 |website=Infodefensa |language=es}}</ref>

In 2017, the [[Philippine Navy]] showed interest in the Kilo-class submarine as part of its modernization program. Defense Secretary [[Delfin Lorenzana]] said the country was evaluating a Russian offer.<ref>{{cite web |url=http://www.janes.com/article/67273/philippines-evaluates-russian-kilo-class-submarines |title=Philippines evaluates Russian Kilo-class submarines |first=Jon |last=Grevatt |date=27 January 2017 |website=IHS Jane's Defence Industry |access-date=30 January 2017 |archive-url=https://web.archive.org/web/20170129212842/http://www.janes.com/article/67273/philippines-evaluates-russian-kilo-class-submarines |archive-date=29 January 2017 |url-status=dead}}</ref>

===Failed bids===
The [[Indonesian Navy]] was interested in purchasing two used Kilo-class submarines, but the [[Chief of Staff of the Indonesian Navy]] [[Laksamana]] [[Marsetio]] cancelled the plans in 2014 after inspecting the two submarines in Russia with an Indonesian Navy team. He said, "The submarines look good on the outside, but the inside is filled with broken equipment, and the two submarines have been in storage for two years." Indonesia instead bought six [[Jang Bogo-class submarine|Improved ''Jang Bogo''-class]] submarines, later known as {{sclass|Nagapasa|submarine|2}}, including a transfer of technology, where Indonesia will eventually build four of six of the submarines with South Korea.<ref>{{cite web |url=https://www.liputan6.com/news/read/2021855/tni-al-batal-beli-kapal-selam-rusia |title=TNI AL Batal Beli Kapal Selam Rusia |trans-title=Indonesian Navy cancels buying Russian submarines |first=Dian |last=Kurniawan |date=12 March 2014 |website=[[Liputan 6]] |language=id |access-date=25 March 2020}}</ref>

==Gallery==
<gallery mode="packed">
File:ORP Orzeł Gdynia.JPG|The [[Poland|Polish]] Kilo-class submarine {{ORP|Orzeł|1986|6}}, 26 June 2011
File:«Калуга», «Липецк» и «Ярославль» в Полярном..jpg|Russian Kilo-class submarines in [[Russian Shipyard Number 10|Polyarny]], Murmansk Oblast
File:Submarine-Kilo-Algeria.JPG|An [[Algeria]]n Kilo-class submarine
File:Heavy-lift ship Sea Teal carrying Chinese Kilo submarine.jpg|A Chinese Kilo-class submarine being delivered from Russia as deck cargo in 1995.
File:ORP Orzel 1986 (7).JPG|ORP ''Orzeł'', the control room of an 877E-class submarine
File:Iranian Kilo-class diesel submarine.jpg|The Iranian Kilo-class submarine ''Yunes'', during delivery in 1995.
File:INS Sindhughosh (S55).JPEG|Indian Kilo-class submarine, INS ''Sindhughosh''
File:ДЭПЛ Калуга возвращается из дальнего похода.png|Diesel submarine Kilo-class ''Kaluga'' returns from a long voyage
File:Russian Navy Submarine Ufa.jpg|Russian Improved Kilo-class submarine ''Ufa'' during the Russian Navy Day parade in 2023.
</gallery>

==List of submarines==
===Project 877===

{| class="wikitable sortable"
|+
!Operator
!#
!Name
!Shipyard
!Project
!data-sort-type="date"|Laid down
!data-sort-type="date"|Launched
!data-sort-type="date"|Commissioned
!Fleet
!class="unsortable"|Status
|-
|{{RUS}}
|B-248
|{{N/a}}
|[[Komsomolsk-on-Amur]]
|877
|{{dts|16 Mar 1980}}
|{{dts|12 Sep 1980}}
|{{dts|31 Dec 1980}}
|
|{{no|Decommissioned 2001}}
|-
|{{RUS}}
|B-260
|[[Russian submarine Chita|''Chita'']]
|[[Komsomolsk-on-Amur]]
|877
|{{dts|22 Feb 1981}}
|{{dts|23 Aug 1981}}
|{{dts|30 Dec 1981}}
|PF
|{{no|Decommissioned 2013, sank partially on way to scrap in 2019}}
|-
|{{RUS}}
|B-227
|''Vyborg''
|Komsomolsk-on-Amur
|877
|{{dts|23 Feb 1982}}
|{{dts|16 Sep 1982}}
|{{dts|23 Feb 1983}}
|BF
|{{no|Decommissioned 2018 (exhibit of the Patriot park in Kronstadt)}}
|-
|{{RUS}}
|B-229
|{{N/a}}
|Komsomolsk-on-Amur
|877
|{{dts|23 Feb 1983}}
|{{dts|15 Jul 1983}}
|{{dts|30 Oct 1983}}
|
|{{no|Decommissioned 2002}}
|-
|{{RUS}}
|B-404
|{{N/a}}
|Komsomolsk-on-Amur
|877
|{{dts|7 May 1983}}
|{{dts|24 Sep 1983}}
|{{dts|30 Dec 1983}}
|
|{{no|Decommissioned 2002}}
|-
|{{RUS}}
|B-401
|''Novosibirsk''
|[[Nizhniy Novgorod]]
|877
|{{dts|6 Oct 1982}}
|{{dts|15 Mar 1984}}
|{{dts|30 Sep 1984}}
|NF
|{{no|Decommissioned 2012}}
|-
|{{RUS}}
|B-402
|''Vologda''
|Nizhniy Novgorod
|877
|{{dts|24 Aug 1983}}
|{{dts|29 Sep 1984}}
|{{dts|30 Dec 1984}}
|NF
|{{no|Decommissioned 2016}}
|-
|{{RUS}}
|B-405
|(''ex Tyumenskiy Komsomolets'')
|Komsomolsk-on-Amur
|877
|{{dts|20 Apr 1984}}
|{{dts|21 Sep 1984}}
|{{dts|30 Dec 1984}}
|
|{{no|Decommissioned 2002}}
|-
|{{POL}}
|291 (ex-B-351)
|{{ORP|Orzeł|1986|2}}
|Nizhniy Novgorod
|877E
|{{dts|29 Sep 1984}}
|{{dts|7 Jun 1985}}
|{{dts|29 Apr 1986}}
|
|{{yes|Active}} {{as of|2010|lc=y}}
|-
|{{ROU}}
|581 (ex-B-801)
|''[[Romanian submarine Delfinul|Delfinul]]''
|Nizhniy Novgorod
|877E
|{{dts|1984}}
|{{dts|1985}}
|{{dts|Aug 1985}}
|
|Unknown (in reserve since 1995)
|-
|{{IND}}
|S55
|{{INS|Sindhughosh|S55|2}}
|[[Saint Petersburg]]
|877EKM
|{{dts|29 May 1983}}
|{{dts|29 Jul 1985}}
|{{dts|25 Nov 1985}}
|
|{{no|Decomissioned 2025}} 
|-
|{{RUS}}
|B-470
|{{N/a}}
|Komsomolsk-on-Amur
|877
|{{dts|6 May 1985}}
|{{dts|27 Aug 1985}}
|{{dts|30 Dec 1985}}
|
|{{no|Decommissioned 2005}}
|-
|{{RUS}}
|B-806
|''Dmitrov''
|Nizhniy Novgorod
|877EKM<br />{{citation needed |date=February 2013}}
|{{dts|15 Oct 1984}}
|{{dts|30 Apr 1986}}
|{{dts|25 Sep 1986}}
|BF
|{{yes|Active}} {{as of|2018|lc=y}}<ref>{{cite web |url=http://eng.mil.ru/en/news_page/country/more.htm?id=12165502@egNews |title=Russian Minister of Defence General of the Army Sergei Shoigu holds teleconference with leadership of Armed Forces |website=Russian Ministry of Defence |access-date=17 Mar 2018 |archive-url=https://web.archive.org/web/20180318055134/http://eng.mil.ru/en/news_page/country/more.htm?id=12165502@egNews |archive-date=18 Mar 2018 |url-status=live}}</ref>
|-
|{{IND}}
|S56
|{{INS|Sindhudhvaj|S56|2}}
|Saint Petersburg
|877EKM
|{{dts|1 Apr 1986}}
|{{dts|27 Jul 1986}}
|{{dts|25 Nov 1986}}
|
|{{no|Decommissioned on 16 Jul 2022.}}<ref>{{cite web |title=INS Sindhudhvaj Decommissioned After 35 Years of Glorious Service to the Nation |url=https://pib.gov.in/PressReleasePage.aspx?PRID=1842174 |website=Press Information Bureau of India |date=17 Jul 2022 |access-date=17 Jul 2022}}</ref>
|-
|{{ALG}}
|012
|{{ship|Algerian submarine|Rais Hadj Mubarek||2}}
|Nizhniy Novgorod
|877EKM
|{{dts|1985}}
|{{dts|1986}}
|{{dts|29 Nov 1986}}
|
|Upgraded in 2010, able to launch [[3M-54 Kalibr|Kalibr/Club]] missiles
|-
|{{RUS}}
|B-439
|{{N/a}}
|Komsomolsk-on-Amur
|877
|{{dts|4 Apr 1986}}
|{{dts|31 Jul 1986}}
|{{dts|30 Dec 1986}}
|
|{{no|Decommissioned 2005}}
|-
|{{IND}}
|S57
|{{INS|Sindhuraj|S57|2}}
|Nizhniy Novgorod
|877EKM
|{{dts|1986}}
|{{dts|1987}}
|{{dts|2 Sep 1987}}
|
|{{yes|Active}} {{as of|2010|lc=y}}, modernized to project 08773 in 1999–2001
|-
|{{ALG}}
|013
|{{ship|Algerian submarine|El Hadj Slimane||2}}
|Nizhniy Novgorod
|877EKM
|{{dts|1986}}
|{{dts|1987}}
|{{dts|25 Nov 1987}}
|
|Upgraded in 2011, able to launch Kalibr/Club missiles
|-
|{{MYA}}
|71
|[[UMS Minye Theinkhathu]] (ex-Sindhuvir)
|Saint Petersburg
|877EKM
|{{dts|15 May 1987}}
|{{dts|13 Sep 1987}}
|{{dts|25 Dec 1987}}
|
|Modernized to project 08773 in 1997–1999, transferred to [[Myanmar Navy]] in 2020
|-
|{{RUS}}
|B-445
|''Svyatoi Nikolai Chudotvorets''
|Komsomolsk-on-Amur
|877
|{{dts|21 Mar 1987}}
|{{dts|26 Sep 1987}}
|{{dts|30 Jan 1988}}
|PF
|May have decommissioned 2020;<ref name="russianships.info">{{cite web |url=http://russianships.info/eng/submarines/project_877.htm |website=russianships.info |title = Large submarines - Project 877, 636}}</ref> listed as still in service by one source<ref>{{cite web |url=http://russianships.info/eng/today/ |title=Russian Navy 2021: List of Active Russian Navy Ships and Submarines |website=Russianships.info |date=24 May 2021}}</ref>
|-
|{{IND}}
|S59
|{{INS|Sindhuratna|S59|2}}
|Nizhniy Novgorod
|877EKM
|{{dts|1987}}
|{{dts|1988}}
|{{dts|14 Aug 1988}}
|
|{{yes|Active}} {{as of|2010|lc=y}}, modernized to project 08773 in 2001–2003
|-
|{{IND}}
|S60
|{{INS|Sindhukesari|S60|2}}
|Saint Petersburg
|877EKM
|{{dts|20 Apr 1988}}
|{{dts|16 Aug 1988}}
|{{dts|29 Oct 1988}}
|
|{{yes|Active}} {{as of|2010|lc=y}}, modernized to project 08773 in 1999–2001
|-
|{{RUS}}
|B-808
|''Yaroslavl''
|Nizhniy Novgorod
|877
|{{dts|29 Sep 1986}}
|{{dts|30 Jul 1988}}
|{{dts|27 Dec 1988}}
|NF
|{{no|Decommissioned 2022}}<ref name="navykorabel2022.2">{{cite web|url=https://navy-korabel.livejournal.com/259085.html|title=Боевые корабли основных классов ВМФ России на 01.02.2022|date=1 Feb 2022|language=ru|website=livejournal.com}}</ref>
|-
|{{RUS}}
|B-394
|''Nurlat''
|Komsomolsk-on-Amur
|877
|{{dts|15 Apr 1988}}
|{{dts|3 Sep 1988}}
|{{dts|30 Dec 1988}}
|PF
|Status unclear; active as of 2018; likely to decommission in mid/latter 2020s<ref name="Seapower">{{cite web|url=https://seapower.navy.gov.au/publications-and-research/moscows-pacific-trident-submarine-arm-russian-pacific-fleet-early-2025-2030|title = Moscow's Pacific Trident: The submarine arm of the Russian Pacific Fleet, early 2025 to 2030|website=Sea Power Centre Australia |last= Muraviev |first=Alexey D|date=2025|access-date = 10 Sep 2025}}</ref>
|-
|{{RUS}}
|B-800
|''Kaluga'' (ex-''Vologodskij komsomolets'')
|Nizhniy Novgorod
|877LPMB<br />{{citation needed |date=February 2013}}
|{{dts|5 Mar 1987}}
|{{dts|7 May 1989}}
|{{dts|30 Sep 1989}}
|NF
|{{yes|Refitted in 2009–2012, active 2022}}<ref name="navykorabel2022.2"/>
|-
|{{IND}}
|S61
|{{INS|Sindhukirti|S61|2}}
|Saint Petersburg
|877EKM
|{{dts|5 Apr 1989}}
|{{dts|26 Aug 1989}}
|{{dts|30 Oct 1989}}
|
|{{yes|Active, modernized to project 08773}}
|-
|{{RUS}}
|B-464
|''Ust'-Kamchatsk''
|Komsomolsk-on-Amur
|877
|{{dts|26 May 1989}}
|{{dts|23 Sep 1989}}
|{{dts|30 Jan 1990}}
|PF
|Status unclear; active as of 2018; likely to decommission in mid/latter 2020s<ref>{{cite web |url=https://seapower.navy.gov.au/publications-and-research/moscows-pacific-trident-submarine-arm-russian-pacific-fleet-early-2025-2030 |title = Moscow's Pacific Trident: The submarine arm of the Russian Pacific Fleet, early 2025 to 2030 |website=Sea Power Centre Australia |last= Muraviev |first=Alexey D|date=2025|access-date = 10 Sep 2025}}</ref>
|-
|{{RUS}}
|B-459
|''Vladikavkaz''
|Nizhniy Novgorod
|877
|{{dts|25 Feb 1988}}
|{{dts|29 Apr 1990}}
|{{dts|30 Sep 1990}}
|NF
|{{yes|Refitted in 2011–15, active, entered Baltic Sea 3 Jul 2018 to take part in Main Naval Parade in St Petersburg on 29 Jul.}}
|-
| {{IND}}
| S62
| {{INS|Sindhuvijay|S62|2}}
| Saint Petersburg
| 877EKM
| {{dts|6 Apr 1990}}
| {{dts|27 Jul 1990}}
| {{dts|27 Oct 1990}}
|
| Modernized to project 08773 in 2005–2007. About to undergo mid-life refit as of 2025.<ref>{{Cite web |last=Singh |first=Mayank |date=2025-09-03 |title=INS Sindhuvijay to undergo mid-life refit at Hindustan Shipyard |url=https://www.newindianexpress.com/nation/2025/Sep/03/ins-sindhuvijay-to-undergo-mid-life-refit-at-hindustan-shipyard |access-date=2025-09-03 |website=The New Indian Express |language=en}}</ref>
|-
|{{RUS}}
|B-871
|[[Russian submarine B-871|''Alrosa'']]
|Nizhniy Novgorod
|877V
|{{dts|17 May 1988}}
|{{dts|Sep 1989}}
|{{dts|30 Dec 1990}}
|BSF
|{{yes|Refitted in 2014–2022}}<ref>{{cite web | url=https://tass.ru/armiya-i-opk/14942967 | title=Источник: вооруженная "Калибрами" подлодка "Алроса" останется на Черноморском флоте - ТАСС |website=tass.ru }}</ref>
|-
|{{RUS}}
|B-471
|''Magnitogorsk''
|Nizhniy Novgorod
|877
|{{dts|26 Oct 1988}}
|{{dts|22 Sep 1990}}
|{{dts|30 Dec 1990}}
|NF
|Status unclear as of 2025; active as of 2018
|-
|{{RUS}}
|B-494
|''Ust'-Bolsheretsk''
|Komsomolsk-on-Amur
|877
|{{dts|5 May 1990}}
|{{dts|4 Oct 1990}}
|{{dts|30 Dec 1990}}
|PF
|{{no|Decommissioned 2023}}<ref>{{Cite web |url=https://navy-korabel.livejournal.com/287669.html |title=Боевые корабли основных классов ВМФ России на 01.04.2023 |date=1 Apr 2023 |language=ru |website=livejournal.com}}</ref>
|-
|{{IRN}}
|901
|{{ship|IRIS|Taregh|901|2}}
|Saint Petersburg
|877EKM
|{{dts|5 Apr 1991}}
|{{dts|25 Sep 1991}}
|{{dts|25 Dec 1991}}
|
|{{yes|Active}} {{as of|2012|lc=y}}.<ref>{{cite web |url=https://www.foxnews.com/world/iran-relaunches-russian-made-submarine/ |title=Iran relaunches Russian-made submarine |website=Fox News Channel |date=29 May 2012 |access-date=8 Mar 2014 |archive-url=https://web.archive.org/web/20120630011150/http://www.foxnews.com/world/2012/05/29/iran-relaunches-russian-made-submarine/ |archive-date=30 Jun 2012 |url-status=live}}</ref> Upgraded in Iranian shipyard.<ref>{{cite web |url=http://flot.com/news/navy/index.php?ELEMENT_ID=113491 |title=Иран вернул на флот подводную лодку российской постройки |trans-title=Iran returns Russian-built submarine to Navy |language=ru |date=29 May 2012 |website=Flot.com |access-date=8 Mar 2014 |archive-url=https://web.archive.org/web/20130430185945/http://flot.com/news/navy/index.php?ELEMENT_ID=113491 |archive-date=30 Apr 2013 |url-status=live}}</ref>
|-
|{{RUS}}
|B-187
|Komsomolsk-on-Amur
|Komsomolsk-on-Amur
|877
|{{dts|7 May 1991}}
|{{dts|5 Oct 1991}}
|{{dts|30 Dec 1991}}
|PF
|{{yes|Active 2018}}<ref>{{cite news |url=http://navaltoday.com/2017/01/27/russian-kilo-class-submarine-rejoins-navy-after-14-years-of-repairs/ |title=Russian Kilo-class submarine rejoins navy after 14 years of repairs |work=[[Navaltoday.com]] |date=27 Jan 2017 |access-date=27 Jan 2017 |archive-url=https://web.archive.org/web/20170127111348/http://navaltoday.com/2017/01/27/russian-kilo-class-submarine-rejoins-navy-after-14-years-of-repairs/ |archive-date=27 Jan 2017 |url-status=live}}</ref>
|-
|{{RUS}}
|B-177
|''Lipetsk''
|Nizhniy Novgorod
|877
|{{dts|3 Nov 1989}}
|{{dts|27 Jul 1991}}
|{{dts|30 Dec 1991}}
|NF
|Status unclear as of 2025; active as of 2018
|-
|{{RUS}}
|B-190
|''Krasnokamensk''
|Komsomolsk-on-Amur
|877
|{{dts|8 May 1992}}
|{{dts|25 Sep 1992}}
|{{dts|30 Dec 1992}}
|PF
|{{no|Decommissioned 2023}}<ref>{{Cite web |url=https://www.imago-images.com/st/0302423769 |title=Russia Submarine Decommissioning B-190 |date=30 Aug 2023 |website=imago-images.com}}</ref>
|-
|{{IRN}}
|902
|{{ship|IRIS|Noah|902|2}}
|Saint Petersburg
|877EKM
|{{dts|30 Apr 1992}}
|{{dts|16 Oct 1992}}
|{{dts|31 Dec 1992}}
|
|Unknown (probably in modernization in Iranian shipyard)
|-
|{{RUS}}
|B-345
|''Mogocha''
|Komsomolsk-on-Amur
|877
|{{dts|22 Apr 1993}}
|{{dts|6 Oct 1993}}
|{{dts|22 Jan 1994}}
|
|{{no|Decommissioned 29 May 2021}}<ref name="russianships.info"/>
|-
|{{PRC}}
|364
|''Yuan Zheng 64 Hao''
|Nizhniy Novgorod
|877EKM
|???
|{{dts|1994}}
|{{dts|10 Nov 1994}}
|
|{{no|Decommissioned 2021}}
|-
|{{PRC}}
|365
|''Yuan Zheng 65 Hao''
|Nizhniy Novgorod
|877EKM
|???
|{{dts|1995}}
|{{dts|14 Aug 1995}}
|
|{{no|Decommissioned 2021}}
|-
|{{IRN}}
|903
|{{ship|IRIS|Yunes|903|2}}
|Saint Petersburg
|877EKM
|{{dts|5 Feb 1992}}
|{{dts|12 Jul 1994}}
|{{dts|2 Sep 1996}}
|
|{{yes|Active as 2011}}<ref>{{cite web |url=http://flot.com/news/navy/index.php?ELEMENT_ID=84673 |title=Иранские подводные лодки отправятся в 90-дневный поход |trans-title=Iranian submarines will go on a 90-day cruise |date=1 Aug 2011 |language=ru |website=Flot.com |access-date=28 Sep 2011 |archive-url=https://web.archive.org/web/20111113203404/http://flot.com/news/navy/index.php?ELEMENT_ID=84673 |archive-date=13 Nov 2011 |url-status=live}}</ref> (probably in modernization in Iranian shipyard)
|-
|{{IND}}
|S63
|{{INS|Sindhurakshak|S63|2}}
|Saint Petersburg
|877EKM
|{{dts|16 Feb 1995}}
|{{dts|26 Jun 1997}}
|{{dts|2 Oct 1997}}
|
|{{no|A munitions accident caused an explosion and fire while at berth in 2013.}}<ref>{{cite web |url=https://www.bbc.co.uk/news/world-asia-23691324 |title=Indian submarine hit by explosion at Mumbai port |website=BBC News |date=14 Aug 2013 |access-date=8 Mar 2014 |archive-url=https://web.archive.org/web/20130815172215/http://www.bbc.co.uk/news/world-asia-23691324 |archive-date=15 Aug 2013 |url-status=live}}</ref>  It was later scuttled.
|-
|{{IND}}
|S65
|{{INS|Sindhurashtra|S65|2}}
|Saint Petersburg
|877EKM
|{{dts|12 Dec 1998}}
|{{dts|14 Oct 1999}}
|{{dts|16 May 2000}}
|
|{{yes|Active}} {{as of|2010|lc=y}}
|}

===Project 636===
{| class="wikitable"
|+
!Operator
!#
!Name
!Shipyard
!Project
!Laid down
!Launched
!Commissioned
!Fleet
!Status
|-
|{{PRC}}
|366
|''Yuan Zheng 66 Hao''
|Saint Petersburg
|636
|16 Jul 1996
|26 Apr 1997
|26 Aug 1997
|
|Active {{as of|2006|lc=y}}
|-
|{{PRC}}
|367
|''Yuan Zheng 67 Hao''
|Saint Petersburg
|636
|28 Aug 1997
|18 Jun 1998
|25 Oct 1998
|
|Active {{as of|2006|lc=y}}
|-
|{{PRC}}
|368
|''Yuan Zheng 68 Hao''
|Saint Petersburg
|636M
|18 Oct 2002
|27 May 2004
|20 Oct 2004
|
|Active {{as of|2006|lc=y}}
|-
|{{PRC}}
|369
|''Yuan Zheng 69 Hao''
|Saint Petersburg
|636M
|18 Oct 2002
|19 Aug 2004
|2005
|
|Active {{as of|2006|lc=y}}
|-
|{{PRC}}
|370
|''Yuan Zheng 70 Hao''
|Saint Petersburg
|636M
|2004
|May 2005
|2005
|
|Active {{as of|2006|lc=y}}
|-
|{{PRC}}
|371
|''Yuan Zheng 71 Hao''
|Saint Petersburg
|636M
|2004
|2005
|2005
|
|Active {{as of|2006|lc=y}}
|-
|{{PRC}}
|372
|''Yuan Zheng 72 Hao''
|Saint Petersburg
|636M
|2005
|2005
|2006
|
|Active {{as of|2006|lc=y}}
|-
|{{PRC}}
|373
|''Yuan Zheng 73 Hao''
|Nizhniy Novgorod
|636M
|Jul 1992
|8 May 2004
|5 Aug 2005
|
|Active {{as of|2007|lc=y}}
|-
|{{PRC}}
|374
|''Yuan Zheng 74 Hao''
|Severodvinsk
|636M
|29 May 2003
|21 May 2005
|30 Dec 2005
|
|Active {{as of|2006|lc=y}}
|-
|{{PRC}}
|375
|''Yuan Zheng 75 Hao''
|Severodvinsk
|636M
|29 May 2003
|14 Jul 2005
|30 Dec 2005
|
|Active {{as of|2006|lc=y}}
|-
|{{ALG}}
|021
|{{ship|Algerian submarine|Messali el Hadj||2}}
|Saint Petersburg
|636M
|2006
|20 Nov 2008
|28 Aug 2009
|
|Active{{citation needed|date=June 2022}}
|-
|{{ALG}}
|022
|{{ship|Algerian submarine|Akram Pacha||2}}
|Saint Petersburg
|636M
|2007
|9 Apr 2009
|29 Oct 2009
|
|Active{{citation needed|date=June 2022}}
|-

|{{VIE}}
|182
|{{ship|Vietnamese submarine|Hà Nội||2}}
|Saint Petersburg
|636.1
|25 Aug 2010
|28 Aug 2012<ref>{{cite web |url=http://flotprom.ru/news/index.php?ELEMENT_ID=120534 |title=Головная подводная лодка для ВМС Вьетнама спущена на воду |trans-title=Vietnam's lead submarine launched |language=ru |date=28 Aug 2012 |website=Flotprom.ru |access-date=8 Mar 2014 |archive-url=https://web.archive.org/web/20121021034826/http://flotprom.ru/news/index.php?ELEMENT_ID=120534 |archive-date=21 Oct 2012 |url-status=live}}</ref>
|3 Apr 2014
|
|Active as of 2014<ref>{{cite web |url=http://www.navyrecognition.com/index.php/news/defence-news/year-2014-news/january-2014-navy-naval-forces-maritime-industry-technology-security-global-news/1458-first-type-636-diesel-submarine-ssk-ordered-by-vietnam-arrived-at-cam-ranh-base.html |title=First Type 636 diesel submarine (SSK) ordered by Vietnam arrived at Cam Ranh base |date=2 Jan 2014 |website=NavyRecognition.com |access-date=4 Jan 2014 |archive-url=https://web.archive.org/web/20140104213102/http://www.navyrecognition.com/index.php/news/defence-news/year-2014-news/january-2014-navy-naval-forces-maritime-industry-technology-security-global-news/1458-first-type-636-diesel-submarine-ssk-ordered-by-vietnam-arrived-at-cam-ranh-base.html |archive-date=4 Jan 2014 |url-status=live}}</ref><ref>{{cite web |url=http://www.navyrecognition.com/index.php/news/defence-news/year-2014-news/april-2014-navy-naval-forces-maritime-industry-technology-security-global-news/1725-vietnam-navy-receives-2-russia-made-project-636-kilo-class-diesel-electric-submarines.html |title=Vietnam Navy receives 2 Russia-made project 636 Kilo class diesel electric submarines |date=6 Apr 2014 |website=NavyRecognition.com |access-date=6 Apr 2014 |archive-url=https://web.archive.org/web/20140407080726/http://www.navyrecognition.com/index.php/news/defence-news/year-2014-news/april-2014-navy-naval-forces-maritime-industry-technology-security-global-news/1725-vietnam-navy-receives-2-russia-made-project-636-kilo-class-diesel-electric-submarines.html |archive-date=7 Apr 2014 |url-status=live}}</ref>
|-
|{{VIE}}
|183
|{{ship|Vietnamese submarine|Hồ Chí Minh City||2}}
|Saint Petersburg
|636.1
|28 Sep 2011
|28 Dec 2012
|3 Apr 2014
|
|Active as of 2014<ref>{{cite web |url=https://www.facebook.com/photo.php?fbid=502685059854459 |title=Vietnam received the second project 636 submarine |author=WarComissar |date=20 Mar 2014 |website=Facebook |access-date=22 Mar 2014 |archive-url=https://web.archive.org/web/20160109162942/https://www.facebook.com/photo.php?fbid=502685059854459 |archive-date=9 Jan 2016 |url-status=dead}}</ref>{{Primary source inline |date=November 2020}}<ref>{{cite web |url=http://tuoitre.vn/Chinh-tri-Xa-hoi/598966/tau-ngam-tp-hcm-vao-den-vinh-cam-ranh.html |title=Tàu ngầm TP.Hồ Chí Minh vào đến vịnh Cam Ranh |trans-title=Ho Chi Minh City submarine arrives at Cam Ranh Bay |date=20 Mar 2014 |website=[[Tuổi Trẻ]] |language=vi |access-date=22 Mar 2014 |archive-url=https://web.archive.org/web/20140807053221/http://tuoitre.vn/Chinh-tri-Xa-hoi/598966/tau-ngam-tp-hcm-vao-den-vinh-cam-ranh.html |archive-date=7 Aug 2014 |url-status=dead}}</ref>
|-
|{{VIE}}
|184
|{{ship|Vietnamese submarine|Hải Phòng||2}}
|Saint Petersburg
|636.1
|
|Aug 2013<ref>{{cite web |url=http://vpk-news.ru/news/14798 |script-title=ru:Россия поставит Вьетнаму 2 подводные лодки до конца года |trans-title=Russia will supply Vietnam with 2 submarines by the end of the year |language=ru |website=Vpk-news.ru |access-date=8 Mar 2014 |archive-url=https://web.archive.org/web/20141229230714/http://vpk-news.ru/news/14798 |archive-date=29 Dec 2014 |url-status=live|title= }}</ref>
|1 Aug 2015
|
|Active as of 2014<ref>{{cite web |url=http://defenceradar.com/2014/12/09/vietnam-navy-has-taken-delivery-of-3rd-kilo-class-submarine-hq-184-hai-phong/ |title=Vietnam Navy has taken delivery of 3rd Kilo-class submarine HQ 184 Hải Phòng |date=9 Dec 2014 |website=DefenceRadar.com |access-date=10 Dec 2014 |archive-url=https://web.archive.org/web/20141210103316/http://defenceradar.com/2014/12/09/vietnam-navy-has-taken-delivery-of-3rd-kilo-class-submarine-hq-184-hai-phong/ |archive-date=10 Dec 2014 |url-status=dead}}</ref>
|-
|{{VIE}}
|185
|{{ship|Vietnamese submarine|Khánh Hoà||2}}
|Saint Petersburg
|636.1
|2013
|28 Mar 2014<ref>{{cite web |url=https://www.facebook.com/photo.php?fbid=503993693056929 |title=The fourth submarine for the Vietnam People's Navy will be launched on Mar 28th |author=WarComissar |date=22 Mar 2014 |website=Facebook |access-date=22 Mar 2014 |archive-url=https://web.archive.org/web/20160109162942/https://www.facebook.com/photo.php?fbid=503993693056929 |archive-date=9 Jan 2016 |url-status=dead}}</ref>{{Primary source inline |date=November 2020}}
|1 Aug 2015
|
|Active as of 2015<ref>{{cite news |url=http://vnexpress.net/photo/thoi-su/tau-ngam-kilo-185-tien-vao-quan-cang-cam-ranh-3242565.html |title=Tàu ngầm Kilo 185 tiến vào quân cảng Cam Ranh |trans-title=Kilo 185 submarine enters Cam Ranh military port |language=vi |work=[[VnExpress]] Tin Nhanh Vietnam |access-date=2 Jul 2015 |archive-url=https://web.archive.org/web/20150703104453/http://vnexpress.net/photo/thoi-su/tau-ngam-kilo-185-tien-vao-quan-cang-cam-ranh-3242565.html |archive-date=3 Jul 2015 |url-status=live}}</ref> 
|-
|{{VIE}}
|186
|{{ship|Vietnamese submarine|Đà Nẵng||2}}
|Saint Petersburg
|636.1
|
|28 Dec 2014
|28 Feb 2017
|
|Active as of 2016<ref>{{cite news |title=Cá quả mang tên Đà Nẵng (SSK-186) đã về nhà |trans-title=The Da Nang (SSK-186) has come home |language=vi |url=https://web.facebook.com/WarComissar/photos/pb.213961285393506.-2207520000.1454608127./869602276496067/?type=3&theater |access-date=3 Feb 2016 |author=Đơn vị tác chiến điện tử (Comrade Commissar) |website=Facebook}}</ref>
|-
|{{VIE}}
|187
|{{ship|Vietnamese submarine|Bà Rịa-Vũng Tàu||2}}
|Saint Petersburg
|636.1
|28 May 2014<ref>{{cite web |url=http://www.navyrecognition.com/index.php/news/defence-news/year-2014-news/june-2014-navy-naval-forces-maritime-industry-technology-security-global-news/1821-russia-laid-down-the-6th-and-last-kilo-class-diesel-electric-submarine-for-vietnam.html |title=Russia Laid Down the 6th and last Kilo-Class Diesel Electric Submarine for Vietnam |date=3 Jun 2014 |website=NavyRecognition.com |access-date=7 Jun 2014 |archive-url=https://web.archive.org/web/20140703103438/http://www.navyrecognition.com/index.php/news/defence-news/year-2014-news/june-2014-navy-naval-forces-maritime-industry-technology-security-global-news/1821-russia-laid-down-the-6th-and-last-kilo-class-diesel-electric-submarine-for-vietnam.html |archive-date=3 Jul 2014 |url-status=live}}</ref>
|28 Sep 2015
|28 Feb 2017
|
|Active as of 2017<ref>{{cite web |url=http://navyrecognition.com/index.php/news/defence-news/2017/march-2017-navy-naval-forces-defense-industry-technology-maritime-security-global-news/4935-last-two-of-six-russia-built-project-636-1-submarines-commissioned-with-vietnamese-navy.html |title=Last Two of Six Russia-Built Project 636.1 Submarines Commissioned with Vietnamese Navy |website=NavyRecognition.com |date=Mar 2017 |access-date=10 Mar 2017 |archive-url=https://web.archive.org/web/20170309115711/http://www.navyrecognition.com/index.php/news/defence-news/2017/march-2017-navy-naval-forces-defense-industry-technology-maritime-security-global-news/4935-last-two-of-six-russia-built-project-636-1-submarines-commissioned-with-vietnamese-navy.html |archive-date=9 Mar 2017 |url-status=live}}</ref>
|-
|{{ALG}}
|031
|''El Ouarsenis''
|Saint Petersburg
|636.1
|2015
| 14 Mar 2017
| 9 Jan 2019
|
|Active as of 2019<ref name="Algeria 636.3 commission">{{cite web |url=http://www.defenceweb.co.za/index.php?option=com_content&view=article&id=54161:algeria-commissions-two-kilo-class-submarines&Itemid=106 |title=Algeria commissions two Kilo class submarines |website=DefenceWeb |date=10 Jan 2019 |access-date=10 Jan 2019 |archive-url=https://web.archive.org/web/20190110134018/http://www.defenceweb.co.za/index.php?option=com_content&view=article&id=54161:algeria-commissions-two-kilo-class-submarines&Itemid=106 |archive-date=10 Jan 2019 |url-status=dead}}</ref>
|-
|{{ALG}}
|032
|''El Hoggar''
|Saint Petersburg
|636.1
|
|18 Jun 2018
|9 Jan 2019
|
|Active as of 2019<ref name="Algeria 636.3 commission"/>
|}

===Project 636.3===
Italics indicate estimates.
Russian designation Project 636.6 is known as the "Improved Kilo II" class in the West.

{| class="wikitable"
|+
!Operator
!#
!Name
!Shipyard
!Project
!Laid down
!Launched
!Commissioned
!Fleet
!Status
|-
|{{RUS}}
|B-261
|{{ship|Russian submarine|Novorossiysk||2}}
|Saint Petersburg
|636.3
|20 Aug 2010<ref>{{cite web |url=http://rusnavy.com/news/navy/index.php?ELEMENT_ID=10078 |title=Submarine Novorossiysk has been laid down at Admiralteyskie Verfi |website=Rusnavy.com |date=20 Aug 2010 |access-date=28 Sep 2011 |archive-url=https://web.archive.org/web/20111017043133/http://rusnavy.com/news/navy/index.php?ELEMENT_ID=10078 |archive-date=17 Oct 2011 |url-status=dead}}</ref>
|28 Nov 2013<ref>{{cite press release |url=http://www.admship.ru/press/news/na-oao-admiralteyskie-verfi-spushchena-na-vodu-golovnaya-podvodnaya-lodka-serii-dlya-vmf-rf/ |title=На ОАО "Адмиралтейские верфи" Спущена На Воду Головная Подводная Лодка Серии Для Вмф Рф |trans-title=JSC Admiralty Shipyards Launches the Lead Submarine Series For the Russian Navy |website=Admiralty Shipyard |language=ru |date=28 Nov 2013 |access-date=28 Nov 2013 |archive-url=https://web.archive.org/web/20190328153811/http://www.admship.ru/press/news/na-oao-admiralteyskie-verfi-spushchena-na-vodu-golovnaya-podvodnaya-lodka-serii-dlya-vmf-rf/ |archive-date=28 Mar 2019 |url-status=live}}</ref>
|22 Aug 2014<ref>{{cite web |url=http://flotprom.ru/news/index.php?ELEMENT_ID=170176 |title=Госкомиссия приняла подлодку "Новороссийск" |trans-title=The State Commission accepted the submarine "Novorossiysk" |language=ru |website=flotprom.ru |access-date=22 Aug 2014 |archive-url=https://web.archive.org/web/20140822070131/http://flotprom.ru/news/index.php?ELEMENT_ID=170176 |archive-date=22 Aug 2014 |url-status=live}}</ref><ref>{{cite web |url=http://www.navyrecognition.com/index.php/news/defence-news/year-2014-news/september-2014-navy-naval-forces-maritime-industry-technology-security-global-news/2001-russias-first-varshavyanka-class-submarine-qnovorossiiskq-joined-black-sea-fleet.html |title=Russia's first Varshavyanka-class submarine "Novorossiisk" joined Black Sea Fleet |date=18 Sep 2014 |website=NavyRecognition.com |access-date=23 Sep 2014 |archive-url=https://web.archive.org/web/20140929202335/http://www.navyrecognition.com/index.php/news/defence-news/year-2014-news/september-2014-navy-naval-forces-maritime-industry-technology-security-global-news/2001-russias-first-varshavyanka-class-submarine-qnovorossiiskq-joined-black-sea-fleet.html |archive-date=29 Sep 2014 |url-status=live}}</ref>
|BSF
|Active; {{As of|2025|9|lc=yes}} has a serious technical problem with diesel leaking from the fuel system into the submarine.<ref>{{cite news|url= https://charter97.org/en/news/2025/9/27/657235/ |website= [[Charter 97]] |title= Russia Hides Emergency On Novorossiysk Submarine |date= 2025-09-27 | access-date= 2025-09-27}}</ref><ref>{{cite news|url= https://www.msn.com/en-gb/news/world/disaster-for-putins-navy-as-lead-submarine-in-serious-difficulties-in-mediterranean-sea/ar-AA1NpgDO |website= [[msn.com]] |title= Disaster for Putin's navy as lead submarine in 'serious' difficulties in Mediterranean Sea |first= John |last= Varga |date= 2025-09-27 | access-date= 2025-09-27}}</ref>
|-
|{{RUS}}
|B-237
|{{ship|Russian submarine|Rostov-na-Donu||2}}
|Saint Petersburg
|636.3
|21 Nov 2011<ref>{{cite web |url=http://www.flot.com/news/navy/?ELEMENT_ID=98070 |title=Подводная лодка "Ростов-на-Дону" заложена на Адмиралтейских верфях |trans-title=Submarine "Rostov-on-Don" laid down at the Admiralty shipyards |language=ru |date=21 Nov 2011 |website=Flot.com |access-date=8 Mar 2014 |archive-url=https://web.archive.org/web/20111126065446/http://www.flot.com/news/navy/?ELEMENT_ID=98070 |archive-date=26 Nov 2011 |url-status=live}}</ref>
|26 Jun 2014<ref>{{cite press release |url=http://www.admship.ru/press/news/na-oao-admiralteyskie-verfi-spushchena-na-vodu-podvodnaya-lodka-dlya-vmf-rf/ |title=На ОАО "Адмиралтейские верфи" Спущена На Воду Подводная Лодка Для Вмф Рф |trans-title=JSC Admiralty shipyards launched a submarine for the Russian Navy |website=Admiralty Shipyard |language=ru |date=26 Jun 2014 |access-date=26 Jun 2014 |archive-url=https://web.archive.org/web/20190328150649/http://www.admship.ru/press/news/na-oao-admiralteyskie-verfi-spushchena-na-vodu-podvodnaya-lodka-dlya-vmf-rf/ |archive-date=28 Mar 2019 |url-status=live}}</ref>
|30 Dec 2014<ref>{{Cite web |date=16 Sep 2023 |title=Russian B237 Kilo-class sub was hit about main pressure hull |url=https://bulgarianmilitary.com/2023/09/16/russian-b-237-kilo-class-sub-was-hit-about-the-main-pressure-hull/ |website=bulgarianmilitary.com |access-date=18 Sep 2023 |language=en-US}}</ref>
|BSF
|Damaged by the cruise missile strike on Sevastopol drydock on 12 Sep 2023;<ref>{{cite web |title=New images show extent of damage endured by Russian submarine in Sevastopol |url=https://www.ukrinform.net/rubric-ato/3762813-new-images-show-extent-of-damage-endured-by-russian-submarine-in-sevastopol.html|date=18 Sep 2023|access-date=18 Sep 2023 |website=Ukrinform}}</ref> taken in for repair in dry dock;<ref name="auto"/><ref>{{cite web | title=ТАСС: ремонт подлодки "Ростов-на-Дону" продолжается на плаву | website=ФлотПром | date=2024-07-17 | url=https://flotprom.ru/2024/%D0%A7%D0%B5%D1%80%D0%BD%D0%BE%D0%BC%D0%BE%D1%80%D1%81%D0%BA%D0%B8%D0%B9%D0%A4%D0%BB%D0%BE%D1%825/ | language=ru | ref={{sfnref | ФлотПром | 2024}} | access-date=2024-08-05}}</ref> claimed sunk by Ukraine in a second strike in Aug 2024<ref>{{cite web|title=Russia Floats Lifesize Submarine Decoy of Sunken Vessel in Crimea|url=https://www.newsweek.com/russia-floats-lifesize-submarine-decoy-sunken-vessel-crimea-ukraine-1940251 |date=16 Aug 2024|access-date=31 Oct 2025|website=Newsweek|last=Chan |first=Ryan }}</ref>
|-
|{{RUS}}
|B-262
|{{ship|Russian submarine|Stary Oskol||2}}<ref>{{cite web |url=http://flotprom.ru/news/index.php?ELEMENT_ID=112021 |title=НАПЛ "Санкт-Петербург" выходит из ремонта |trans-title=Submarine "Saint Petersburg" is out of repair |language=ru |date=15 May 2012 |website=Flotprom.ru |access-date=8 Mar 2014 |archive-url=https://web.archive.org/web/20140308045005/http://flotprom.ru/news/index.php?ELEMENT_ID=112021 |archive-date=8 Mar 2014 |url-status=live}}</ref>
|Saint Petersburg
|636.3
|17 Aug 2012<ref>{{cite web |url=http://flotprom.ru/news/index.php?ELEMENT_ID=119836 |title=Подводная лодка "Старый Оскол" для Черноморского флота будет заложена на Адмиралтейских верфях 17 августа |trans-title=The Black Sea Fleet submarine "Stary Oskol" will be laid down at the Admiralty shipyards on 17 Aug |language=ru |date=15 Aug 2012 |website=Flotprom.ru |access-date=8 Mar 2014 |archive-url=https://web.archive.org/web/20121021032559/http://flotprom.ru/news/index.php?ELEMENT_ID=119836 |archive-date=21 Oct 2012 |url-status=live}}</ref>
|28 Aug 2014<ref>{{cite press release |url=http://www.admship.ru/press/news/na-oao-admiralteyskie-verfi-spushchena-na-vodu-podvodnaya-lodka-proekta-636-3-staryy-oskol/ |title=На ОАО "Адмиралтейские верфи" Спущена На Воду Подводная Лодка Проекта 636.3 "Старый Оскол" |trans-title=Submarine of Project 636.3 "Stary Oskol" was launched at JSC Admiralteyskie Verfi |website=Admiralty Shipyard |language=ru |date=28 Aug 2014 |access-date=28 Aug 2014 |archive-url=https://web.archive.org/web/20190328150658/http://www.admship.ru/press/news/na-oao-admiralteyskie-verfi-spushchena-na-vodu-podvodnaya-lodka-proekta-636-3-staryy-oskol/ |archive-date=28 Mar 2019 |url-status=live}}</ref>
|25 Jun 2015
|BSF
|Active
|-
|{{RUS}}
|B-265
|{{ship|Russian submarine|Krasnodar|B-265|2}}
|Saint Petersburg
|636.3
|20 Feb 2014<ref>{{cite press release |url=http://www.admship.ru/press/news/na-oao-admiralteyskie-verfi-zalozhili-chetvertuyu-podvodnuyu-lodku-proekta-636-3-v-serii-dlya-vmf-rf/ |title=На ОАО "Адмиралтейские верфи" Заложили Четвертую Подводную Лодку Проекта 636.3 В Серии Для Вмф Рф |trans-title=The Fourth Submarine of Project 636.3 was laid down at JSC Admiralteyskie Verfi for the Russian Navy |website=Admiralty Shipyard |language=ru |date=20 Feb 2014 |access-date=20 Feb 2014 |archive-url=https://web.archive.org/web/20190328150634/http://www.admship.ru/press/news/na-oao-admiralteyskie-verfi-zalozhili-chetvertuyu-podvodnuyu-lodku-proekta-636-3-v-serii-dlya-vmf-rf/ |archive-date=28 Mar 2019 |url-status=live}}</ref>
|25 Apr 2015<ref>{{cite press release |url=http://www.admship.ru/press/news/oao-admiralteyskie-verfi-spustilo-na-vodu-podvodnuyu-lodku-krasnodar/ |title=ОАО "Адмиралтейские верфи" Спустило На Воду Первую В Серии Подводную Лодку "Краснодар" |trans-title=JSC Admiralteyskie Verfi Launched the First in Series Submarine "Krasnodar" |website=Admiralty Shipyard |language=ru |date=25 Apr 2015 |access-date=25 Apr 2015 |archive-url=https://web.archive.org/web/20190328150634/http://www.admship.ru/press/news/oao-admiralteyskie-verfi-spustilo-na-vodu-podvodnuyu-lodku-krasnodar/ |archive-date=28 Mar 2019 |url-status=live}}</ref>
|5 Nov 2015
|BSF
|Active
|-
|{{RUS}}
|B-268
|{{ship|Russian submarine|Veliky Novgorod||2}}
|[[Saint Petersburg]]
|636.3
|30 Oct 2014<ref name="636.3 BSF-1">{{cite press release |url=http://www.admship.ru/press/news/ao-admiralteyskie-verfi-zalozhilo-podvodnye-lodki-petropavlovsk-kamchatskiy-i-volkhov/ |title=ОАО "Адмиралтейские верфи" Заложило Две Большие Дизель-Электрические Подводные Лодки "Великий Новгород" и "Колпино" |trans-title=JSC Admiralty Shipyards laid down two large diesel-electric submarines "Veliky Novgorod" and "Kolpino" |website=Admiralty Shipyard |language=ru |date=28 Jul 2017 |access-date=28 Jul 2017 |archive-url=https://web.archive.org/web/20190328130359/http://www.admship.ru/press/news/ao-admiralteyskie-verfi-zalozhilo-podvodnye-lodki-petropavlovsk-kamchatskiy-i-volkhov/ |archive-date=28 Mar 2019 |url-status=live}}</ref>
|18 Mar 2016<ref>{{cite press release |url=http://www.admship.ru/press/news/ao-admiralteyskie-verfi-spustilo-na-vodu-podvodnuyu-lodku-velikiy-novgorod/ |title=АО "Адмиралтейские верфи" Спустило На Воду Подводную Лодку "Великий Новгород" |trans-title=JSC Admiralty Shipyards launched the submarine "Veliky Novgorod" |website=Admiralty Shipyard |language=ru |date=28 Mar 2019 |access-date=28 Mar 2019 |archive-url=https://web.archive.org/web/20190328150657/http://www.admship.ru/press/news/ao-admiralteyskie-verfi-spustilo-na-vodu-podvodnuyu-lodku-velikiy-novgorod/ |archive-date=28 Mar 2019 |url-status=live}}</ref>
|25 Oct 2016<ref>{{cite news |url=http://tass.com/defense/908758 |title=Fifth Varshavyanka submarine joins Russia's Navy |website=TASS |date=26 Oct 2016 |access-date=26 Oct 2016 |archive-url=https://web.archive.org/web/20161026233032/http://tass.com/defense/908758 |archive-date=26 Oct 2016 |url-status=live}}</ref>
|BSF
|Active
|-
|{{RUS}}
|B-271
|{{ship|Russian submarine|Kolpino||2}}
|Saint Petersburg
|636.3
|30 Oct 2014<ref name="636.3 BSF-1"/>
|31 May 2016<ref>{{cite press release |url=http://www.admship.ru/press/news/ao-admiralteyskie-verfi-spustilo-na-vodu-podvodnuyu-lodku-kolpino/ |title=АО "Адмиралтейские верфи" Спустило На Воду Подводную Лодку "Колпино" |trans-title=JSC Admiralty Shipyards launched the submarine "Kolpino" |website=Admiralty Shipyard |language=ru |date=31 May 2016 |access-date=31 May 2016 |archive-url=https://web.archive.org/web/20190328150634/http://www.admship.ru/press/news/ao-admiralteyskie-verfi-spustilo-na-vodu-podvodnuyu-lodku-kolpino/ |archive-date=28 Mar 2019 |url-status=live}}</ref>
|24 Nov 2016
|BSF
|{{Asof|December 2025}} highly likely docked in [[Port of Novorossiysk]], likely significantly damaged and unable to deploy or sail of its own accord.<ref name="UKMoD-20251220"/>
|-
|{{RUS}}
|B-274
|{{ship|Russian submarine|Petropavlovsk-Kamchatsky|B-274|2}}
|Saint Petersburg
|636.3
|28 Jul 2017<ref name="636.3 PF-1">{{cite press release |url=http://www.admship.ru/press/news/ao-admiralteyskie-verfi-zalozhilo-podvodnye-lodki-petropavlovsk-kamchatskiy-i-volkhov/ |title=АО "Адмиралтейские Верфи" Заложило Подводные Лодки "Петропавловск-Камчатский" И "Волхов" |trans-title=JSC Admiralty Shipyards launched submarines "Petropavlovsk-Kamchatsky" and "Volkhov" |website=Admiralty Shipyard |language=ru |date=28 Jul 2017 |access-date=28 Jul 2017 |archive-url=https://web.archive.org/web/20190328130359/http://www.admship.ru/press/news/ao-admiralteyskie-verfi-zalozhilo-podvodnye-lodki-petropavlovsk-kamchatskiy-i-volkhov/ |archive-date=28 Mar 2019 |url-status=live}}</ref>
|28 Mar 2019<ref>{{cite press release |url=http://www.admship.ru/press/news/ao-admiralteyskie-verfi-spustilo-na-vodu-pervuyu-v-serii-podvodnuyu-lodku-dlya-tikhookeanskogo-flota/ |title=АО "Адмиралтейские Верфи" Спустило На Воду Первую В Серии Подводную Лодку Для Тихоокеанского Флота |trans-title=JSC Admiralty Shipyards Launched the First Submarine in Series for the Pacific Fleet |website=Admiralty Shipyard |language=ru |date=28 Mar 2019 |access-date=28 Mar 2019 |archive-url=https://web.archive.org/web/20190328130400/http://www.admship.ru/press/news/ao-admiralteyskie-verfi-spustilo-na-vodu-pervuyu-v-serii-podvodnuyu-lodku-dlya-tikhookeanskogo-flota/ |archive-date=28 Mar 2019 |url-status=live}}</ref>
|25 Nov 2019<ref>{{cite news |url=https://tass.com/defense/1092443 |title=First Project 636.3 submarine enters service with Russia's Pacific Fleet |website=TASS |date=25 Nov 2019 |access-date=26 Nov 2019}}</ref>
|PF
|Active{{cn|date=October 2025}}
|-
|{{RUS}}
|B-603
|{{ship|Russian submarine|Volkhov||2}}
|Saint Petersburg
|636.3
|28 Jul 2017<ref name="636.3 PF-1"/>
|26 Dec 2019<ref>{{cite press release |url=http://www.admship.ru/press/news/ao-admiralteyskie-verfi-spustilo-na-vodu-podvodnuyu-lodku-dlya-tikhookeanskogo-flota-rossii/ |title=АО "Адмиралтейские Верфи" Спустило На Воду Подводную Лодку Для Тихоокеанского Флота России |trans-title=JSC Admiralty Shipyards Launched a Submarine for the Russian Pacific Fleet |website=Admiralty Shipyard |language=ru |date=26 Dec 2019 |access-date=26 Dec 2019 |archive-url=https://web.archive.org/web/20191226133802/http://www.admship.ru/press/news/ao-admiralteyskie-verfi-spustilo-na-vodu-podvodnuyu-lodku-dlya-tikhookeanskogo-flota-rossii/ |archive-date=26 Dec 2019 |url-status=live}}</ref>
|24 Oct 2020<ref>{{cite web |url=https://www.navyrecognition.com/index.php/news/defence-news/2020/october/9193-project-636-3-diesel-electric-submarine-volkhov-entered-service-with-russian-navy.html |title=Project 636.3 diesel-electric submarine Volkhov entered service with Russian Navy |date=24 Oct 2020 |website=NavyRecognition.com}}</ref>
|PF
|Active; carried out land-attack cruise missile tests in Jan 2022<ref>{{cite web | url=https://www.navyrecognition.com/index.php/naval-news/naval-news-archive/2022/january/11292-russian-navy-launches-kalibr-cruise-missile-from-kilo-class-submarine-volkhov.html |website=www.navyrecognition.com | title=Russian Navy launches Kalibr cruise missile from Kilo-class submarine Volkhov | date=20 Jan 2022 }}</ref>
|-
|{{RUS}}
|B-602
|{{ship|Russian submarine|Magadan|B-602|2}}
|Saint Petersburg
|636.3
|1 Nov 2019<ref name="636.3 PF-3">{{cite press release |url=http://www.admship.ru/press/news/ao-admiralteyskie-verfi-zalozhilo-podvodnye-lodki-magadan-i-ufa/ |title=АО "Адмиралтейские Верфи" Заложило Подводные Лодки "Магадан" И "Уфа" |trans-title=JSC Admiralty Shipyards Launched Submarines "Magadan" And "Ufa" |website=Admiralty Shipyard |language=ru |date=1 Nov 2019 |access-date=1 Nov 2019 |archive-url=https://web.archive.org/web/20191101175931/http://www.admship.ru/press/news/ao-admiralteyskie-verfi-zalozhilo-podvodnye-lodki-magadan-i-ufa/ |archive-date=1 Nov 2019 |url-status=live}}</ref>
|26 Mar 2021<ref>{{cite press release |url=http://www.admship.ru/press/news/ao-admiralteyskie-verfi-spustilo-na-vodu-podvodnuyu-lodku-dlya-tikhookeanskogo-flota-rossii2/ |title=АО "Адмиралтейские Верфи" Спустило На Воду Подводную Лодку Для Тихоокеанского Флота России |trans-title=JSC Admiralty Shipyards Launched a Submarine for the Russian Pacific Fleet |website=Admiralty Shipyard |language=ru |date=26 Mar 2021 |access-date=26 Mar 2021}}</ref>
|12 Oct 2021<ref>{{cite web |url=https://tass.com/defense/1348293 |website=tass.com |title = Project 636.3 Magadan submarine joins Russian Navy}}</ref><ref>{{cite web|url=https://tass.com/defense/1345993 |website=tass.com |title=Project 636.3 Magadan submarine to join Russian Navy on Oct 12 — Defense Ministry}}</ref><ref>{{cite web |url=https://seawaves.com/?p=12280 |title=Project 636.3 Magadan Begins Trials – SeaWaves Magazine |website=seawaves.com |access-date=5 Jun 2021|archive-date=5 Jul 2022|archive-url=https://web.archive.org/web/20220705033548/https://seawaves.com/?p=12280|url-status=dead}}</ref><ref>{{cite web |url=https://www.navalnews.com/naval-news/2021/03/russias-admiralty-shipyards-launches-project-636-3-submarine-magadan-for-pacific-fleet/ |title=Russia's Admiralty Shipyards launches Project 636.3 submarine 'Magadan' for Pacific Fleet |date=27 Mar 2021 |website=NavalNews.com}}</ref><ref name="thediplomat.com">{{cite web |url=https://thediplomat.com/2019/11/first-project-636-3-kilo-class-class-attack-sub-enters-service-with-russias-pacific-fleet/ |title=First Project 636.3 Kilo-Class Attack Sub Enters Service With Russia's Pacific Fleet |date=25 Nov 2019 |first=Franz-Stefan |last=Gady |website=The Diplomat}}</ref><ref>{{cite web|author=ДЭПЛ "Магадан" |url=https://flotprom.ru/2021/%D0%90%D0%B4%D0%BC%D0%B8%D1%80%D0%B0%D0%BB%D1%82%D0%B5%D0%B9%D1%81%D0%BA%D0%B8%D0%B5%D0%92%D0%B5%D1%80%D1%84%D0%B814/ |title=Третья "Варшавянка" для Тихоокеанского флота прошла госприемку |publisher=Flotprom.ru |date= |access-date=4 Sep 2022}}</ref>
|PF
|Active; deployed in the Pacific fleet late 2022<ref>{{Cite web |url=https://tass.com/defense/1519889 |title=Latest diesel-electric sub built for Russian Pacific Fleet arrives in Vladivostok |website=TASS}}</ref>
|-
|{{RUS}}
|B-588
|{{ship|Russian submarine|Ufa||2}}
|Saint Petersburg
|636.3
|1 Nov 2019<ref name="636.3 PF-3"/>
|31 Mar 2022<ref>{{cite press release |url=http://www.admship.ru/press/news/ao-admiralteyskie-verfi-spustilo-na-vodu-podvodnuyu-lodku-ufa/ |website=www.admship.ru |title=АО "Адмиралтейские Верфи" Спустило На Воду Подводную Лодку "Уфа" |trans-title=JSC Admiralty Shipyards Launched Submarine Ufa |publisher=Admiralty Shipyard |language=ru |date=31 Mar 2022 |access-date=31 Mar 2022 |archive-url=https://web.archive.org/web/20220331182016/http://www.admship.ru/press/news/ao-admiralteyskie-verfi-spustilo-na-vodu-podvodnuyu-lodku-ufa/ |archive-date=31 Mar 2022 |url-status=live}}</ref>
| 16 Nov 2022<ref>{{cite web | url=https://www.navyrecognition.com/index.php/naval-news/naval-news-archive/2022/november/12484-russian-navy-officially-commissions-kilo-class-submarine-ufa.html |website=www.navyrecognition.com | title=Russian Navy officially commissions Kilo class submarine Ufa | date=16 Nov 2022 }}</ref><ref>{{Cite web|url=http://flot.com/2022/%C0%E4%EC%E8%F0%E0%EB%F2%E5%E9%F1%EA%E8%E5%C2%E5%F0%F4%E817/|title=Четвертую "Варшавянку" для Тихоокеанского флота введут в строй 16 ноября|website=Центральный Военно-Морской Портал}}</ref><ref>{{cite web | url=https://www.navyrecognition.com/index.php/naval-news/naval-news-archive/2022/october/12375-ufa-diesel-electric-sub-to-enter-service-with-russian-navy-in-november.html |website=www.navyrecognition.com | title=Ufa diesel-electric submarine to enter service with Russian Navy in Nov | date=20 Oct 2022 }}</ref><ref name="thediplomat.com"/><ref name="navykorabel2022b">{{cite web|url=https://navy-korabel.livejournal.com/257030.html#cutid1|title=Строительство боевых кораблей основных классов для ВМФ России на 01.01.2022|date=1 Jan 2022|language=ru|website=navy-korabel}}</ref>
|PF
|Active<ref>{{cite web |url=https://www.navyrecognition.com/index.php/naval-news/naval-news-archive/2022/july/11893-russian-improved-kilo-class-submarine-ufa-begins-sea-trials-in-baltic-sea.html |website=www.navyrecognition.com | title=Russian Improved Kilo class submarine Ufa begins sea trials in Baltic Sea | date=7 Jul 2022 }}</ref>
|-
|{{RUS}}
|B-608
|{{ship|Russian submarine|Mozhaysk||2}}
|Saint Petersburg
|636.3
|23 Aug 2021<ref name="tass.com">{{cite web |url=https://tass.com/defense/1321251 |website=tass.com |title = Russian shipbuilders to lay keel of six warships and submarines on Aug 9–10 — source}}</ref><ref name="Putin launches construction of six">{{cite web |url=https://tass.com/defense/1329121 |title=Putin launches construction of six warships for Russian Navy |language=en |website=tass.com |date=23 Aug 2021 |access-date=23 Aug 2021 }}</ref>
| 27 Apr 2023<ref>{{cite press release |url=http://www.admship.ru/press/news/ao-admiralteyskie-verfi-spustilo-na-vodu-podvodnuyu-lodku-mozhaysk-636-proekta/ |title=АО «Адмиралтейские верфи» Спустило На Воду Подводную Лодку «Можайск» 636 Проекта |trans-title=JSC Admiralty Shipyards Launched Submarine "Mozhaysk" of Project 636 |publisher=Admiralty Shipyard |language=ru |date=27 Apr 2023 |access-date=27 Apr 2023 |archive-url=https://web.archive.org/web/20230429111755/http://www.admship.ru/press/news/ao-admiralteyskie-verfi-spustilo-na-vodu-podvodnuyu-lodku-mozhaysk-636-proekta/ |archive-date=29 Apr 2023 |url-status=live}}</ref>
| 28 Nov 2023
|PF
|Active<ref>{{cite web | url=https://tass.ru/armiya-i-opk/19397513 |website=tass.ru | title=Подводную лодку "Можайск" проекта 636.3 "Варшавянка" передали ВМФ }}</ref>
|-
|{{RUS}}
|B-???
|{{ship|Russian submarine|Yakutsk||2}}
|Saint Petersburg
|636.3
|23 Aug 2021<ref name="tass.com"/><ref name="Putin launches construction of six"/>
|11 Oct 2024<ref>{{Cite web |url=https://dzen.ru/b/ZwjoTGVShg_UAkO9 |access-date=2024-10-11 |website=sso.passport.yandex.ru |title=Yandex }}</ref>
| 11 Jun
2025<ref name="auto1">{{Cite web |title=Минобороны России |url=https://t.me/mod_russia/53648?single |access-date=2025-06-11 |website=Telegram}}</ref>
|PF
|Active<ref name="auto1"/>
|-
|{{RUS}}
|B-???
|''Petrozavodsk''<ref>{{cite web |url=https://www.zona-militar.com/en/2024/10/12/the-sixth-kilo-ii-class-attack-submarine-intended-for-the-russian-navys-pacific-fleet-is-launched/ |title=The sixth Kilo II-class attack submarine intended for the Russian Navy's Pacific Fleet is launched |date=12 Oct 2024 |website=Zona Militar |access-date=31 Oct 2025}}</ref>
|Saint Petersburg
|636.3
| ''2022''<ref name="navykorabel2022b"/>
|
| ''2025''<ref name="navykorabel2022b"/>
|BF<ref name="navykorabel2022b"/>
|Ordered in 2020,<ref>{{cite web |url=https://flotprom.ru/2019/%D0%90%D0%B4%D0%BC%D0%B8%D1%80%D0%B0%D0%BB%D1%82%D0%B5%D0%B9%D1%81%D0%BA%D0%B8%D0%B5%D0%92%D0%B5%D1%80%D1%84%D0%B824/ |title=ВМФ: после завершения "тихоокеанской серии" строительство "Варшавянок" продолжат |trans-title=Navy: After the completion of the "Pacific series", the construction of "Varshavyanka" will continue |language=ru |website=flotprom.ru |date=25 Nov 2019 |access-date=27 Dec 2019 |archive-date=27 Oct 2020 |archive-url=https://web.archive.org/web/20201027114658/https://flotprom.ru/2019/%D0%90%D0%B4%D0%BC%D0%B8%D1%80%D0%B0%D0%BB%D1%82%D0%B5%D0%B9%D1%81%D0%BA%D0%B8%D0%B5%D0%92%D0%B5%D1%80%D1%84%D0%B824/ |url-status=dead }}</ref><ref>{{cite web |url=https://www.navyrecognition.com/index.php/focus-analysis/naval-technology/8994-analysis-latest-russian-navy-contracts-offer-development-conclusions.html |title=Analysis: latest Russian Navy contracts offer development conclusions |date=16 Sep 2020 |website=Navy Recognition |access-date=30 Oct 2020 |archive-date=20 Nov 2021 |archive-url=https://web.archive.org/web/20211120144520/https://www.navyrecognition.com/index.php/focus-analysis/naval-technology/8994-analysis-latest-russian-navy-contracts-offer-development-conclusions.html |url-status=dead }}</ref> improved design<ref>{{cite web |url=https://iz.ru/1187216/roman-kretcul-anna-cherepanova/pod-baltiiskoi-volnoi-novye-submariny-otpraviat-na-severo-zapad |title=Под балтийской волной: новые субмарины отправят на северо-запад |date=12 Jul 2021 |website=iz.ru|language=ru}}</ref>
|-
|{{RUS}}
|B-???
|''Mariupol''<ref>{{cite web |url=https://www.zona-militar.com/en/2024/10/12/the-sixth-kilo-ii-class-attack-submarine-intended-for-the-russian-navys-pacific-fleet-is-launched/ |title=The sixth Kilo II-class attack submarine intended for the Russian Navy's Pacific Fleet is launched |date=12 Oct 2024 |website=Zona Militar |access-date=31 Oct 2025}}</ref>
|Saint Petersburg
|636.3
| ''Autumn 2024''<ref>{{Cite web |url=https://tass.ru/armiya-i-opk/18105153 |title=Источник: подлодка "Мариуполь" будет заложена для Северного флота осенью 2024 года |date=24 Jun 2023 |access-date=30 Jun 2023 |website=TASS |language=ru}}</ref>
|
| ''2027''
|NF<ref>{{cite web | url=https://rg.ru/2023/04/25/reg-szfo/tass-novym-podlodkam-proekta-varshavianka-prisvoiat-imena-gorodov-novyh-regionov-rossii.html |website=rg.ru | title=ТАСС: Новым подлодкам проекта "Варшавянка" присвоят имена городов новых регионов России | date=25 Apr 2023 }}</ref>
|Ordered in 2022
|-
|{{RUS}}
|B-???<ref>{{cite web |url=https://www.zona-militar.com/en/2024/10/12/the-sixth-kilo-ii-class-attack-submarine-intended-for-the-russian-navys-pacific-fleet-is-launched/ |title=The sixth Kilo II-class attack submarine intended for the Russian Navy's Pacific Fleet is launched |date=12 Oct 2024 |website=Zona Militar |access-date=31 Oct 2025}}</ref>
|''Donetsk''<ref>{{cite web |url=https://www.thebarentsobserver.com/security/the-ukrainians-destroyed-one-yesterday-another-six-improved-kiloclass-subs-will-come-to-russias-northern-fleet/442343 |title=The Ukrainians destroyed one yesterday. Another six Improved Kilo-class subs will come to Russia's Northern Fleet |date=16 December 2025 |website=The Barents Observer |access-date=17 December 2025 |last=Staalesen |first=Atle }}</ref>
|Saint Petersburg
|636.3
| ''2023''<ref>{{cite web | url=https://navy-korabel.livejournal.com/277503.html |website=navy-korabel.livejournal.com | title=Строительство боевых кораблей основных классов для ВМФ России на 01.09.2022 | date=Sep 2022 }}</ref><ref>{{cite web | url=https://tass.ru/armiya-i-opk/15476095 |website=tass.ru | title=На форуме "Армия-2022" подпишут контракт на строительство подводных лодок с "Калибрами" - ТАСС }}</ref>
|
| ''2026''
|BF or NF?
|rowspan=2| Both ordered in 2022; two additional submarines with names ''Kherson'' & ''Zaporozhye'' also reported planned<ref name="Barents-Ru-2025" /><ref>{{cite web |url=https://www.thebarentsobserver.com/security/the-ukrainians-destroyed-one-yesterday-another-six-improved-kiloclass-subs-will-come-to-russias-northern-fleet/442343 |title=The Ukrainians destroyed one yesterday. Another six Improved Kilo-class subs will come to Russia's Northern Fleet |date=16 December 2025 |website=The Barents Observer |access-date=17 December 2025 |last=Staalesen |first=Atle }}</ref>
|-
|{{RUS}}
|B-???<ref>{{cite web |url=https://www.zona-militar.com/en/2024/10/12/the-sixth-kilo-ii-class-attack-submarine-intended-for-the-russian-navys-pacific-fleet-is-launched/ |title=The sixth Kilo II-class attack submarine intended for the Russian Navy's Pacific Fleet is launched |date=12 Oct 2024 |website=Zona Militar |access-date=31 Oct 2025}}</ref>
|''Lugansk''<ref name="Barents-Ru-2025" /><ref>{{cite web |url=https://www.thebarentsobserver.com/security/the-ukrainians-destroyed-one-yesterday-another-six-improved-kiloclass-subs-will-come-to-russias-northern-fleet/442343 |title=The Ukrainians destroyed one yesterday. Another six Improved Kilo-class subs will come to Russia's Northern Fleet |date=16 December 2025 |website=The Barents Observer |access-date=17 December 2025 |last=Staalesen |first=Atle }}</ref>
|Saint Petersburg
|636.3
| ''2025''
|
| ''2028''
|BF or NF?
|}

==See also==
* [[List of Soviet and Russian submarine classes]]
* [[List of submarine classes in service]]
* [[Future of the Russian Navy]]
* [[Cruise missile submarine]]
* [[Attack submarine]]

==Notes==
===Citations===
{{reflist|colwidth=30em}}

===Bibliography===
*{{cite book |editor-last=Darman |editor-first=Peter |date=2004 |title=Twenty-first Century Submarines and Warships |series=Military Handbooks|location=Rochester |publisher=Grange Books |isbn=1-84013-678-2}}
*{{cite book |editor-last1=Gardiner |editor-first1=Robert |editor-last2=Chumbley |editor-first2=Stephen |editor-last3=Budzbon |editor-first3=Przemysław  |date=1995 |title=Conway's All the World's Fighting Ships 1947–1995 |location=Annapolis |publisher=Naval Institute Press |isbn=1-55750-132-7}}

==Further reading==
*{{cite book |last=Breemer |first=Jan S. |date=1989 |title=Soviet Submarines: Design, Development and Tactics |location=Coulsdon, Surrey |publisher=Jane's Information Group |isbn=0710605269}}
*{{cite book |last1=Miller |first1=David |last2=Jordan |first2=John |date=1987 |title=Modern Submarine Warfare |location=New York |publisher=Military Press |isbn=0-517-64647-1}}
*{{cite book |last=Miller |first=David |date=1989 |title=Modern Submarines |location=New York |publisher=Prentice Hall Press |series=Combat Arms |isbn=0-13-589102-7}}
*{{cite book |last1=Polmar |first1=Norman |last2=Moore |first2=Kenneth J. |date=2004 |title=Cold War Submarines: The Design and Construction of U.S. and Soviet Submarines |location=Washington, D.C. |publisher=Potomac Books |isbn=978-1-57488-594-1}}
*{{cite book |last1=Polmar |first1=Norman |last2=Noot |first2=Jurrien S. |date=1991 |title=Submarines of the Russian and Soviet Navies, 1718-1990 |location=Annapolis, Maryland |publisher=Naval Institute Press |isbn=0-87021-570-1}}


==External links==
{{Commons category|Kilo class submarines}}
{{refbegin}}
* [http://www.naval-technology.com/projects/kilo/ SSK Kilo Class (Type 636)] at Naval-technology.com
* [http://www.naval-technology.com/projects/kilo877/ SSK Kilo Class (Type 877EKM)] at Naval-technology.com
* {{cite web |url=http://www.sinodefence.com/navy/sub/kilo.asp |title=Kilo Class Diesel-Electric Submarine |work=China Defence Today |url-status=dead |archive-url=https://web.archive.org/web/20070223074353/http://sinodefence.com/navy/sub/kilo.asp |archive-date=23 February 2007 }}
* {{cite encyclopedia |url=http://ship.bsu.by/main.asp?id=101334 |title=Серия 877 Варшавянка |encyclopedia=Encyclopedia of Ships |language=ru |access-date=28 August 2006 |archive-date=12 March 2007 |archive-url=https://web.archive.org/web/20070312043719/http://ship.bsu.by/main.asp?id=101334 |url-status=dead }}
* {{cite web |url=http://ckb-rubin.ru/en/main/ |title="Rubin" Central Design Bureau for Marine Engineering }}
* {{cite web |url=http://www.alrosa.net/photos/ |title=Kilo Class "Alrosa" PhotoAlbum: 100 Photos |work=Russian Black Sea Fleet |archive-url=https://archive.today/20121209114101/http://www.alrosa.net/photos/ |url-status=usurped |archive-date=9 December 2012 |access-date=24 September 2007 }}
{{refend}}

{{Kilo class submarine|state=collapsed}}
{{Soviet and Russian submarines after 1945}}
{{Ship classes of the Iranian Navy}}

{{DEFAULTSORT:Kilo-class submarine}}
[[Category:Attack submarines]]
[[Category:Submarine classes]]
[[Category:Submarines of the People's Liberation Army Navy]]
[[Category:Submarine classes of the Russian and Soviet Navy]]
[[Category:Submarine classes of the Islamic Republic of Iran Navy]]
[[Category:Kilo-class submarines| ]]
[[Category:Russian involvement in the Syrian civil war]]
[[Category:Military equipment of the Russian invasion of Ukraine]]