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{{Short description|Vehicle-launched surface-to-air missile system}}
{{Short description|Vehicle-launched surface-to-air missile system}}
{{Redirect|SA-8|the Apollo flight|A-104 (SA-8)}}
{{Redirect|SA-8|the Apollo flight|A-104 (SA-8)|other uses|SA8 (disambiguation)}}
{{Use dmy dates|date=February 2020}}
{{Use dmy dates|date=February 2020}}
{{More citations needed|date=July 2025}}
{{Infobox weapon
{{Infobox weapon
| name = 9K33 Osa <br><small>([[NATO reporting name]]: SA-8 Gecko)</small>
| name               = 9K33 Osa &lt;br /&gt;&lt;small&gt;([[NATO reporting name]]: SA-8 Gecko, SA-N-4 Gecko)&lt;/small&gt;
| image = File:ParkPatriot2015part8-28.jpg
| image             = File:ParkPatriot2015part8-28.jpg
| image_size = 300
| image_size         = 300
| caption = 9A33BM3 [[Missile vehicle|transporter-launcher]] and radar vehicle of the upgraded 9K33M3 Osa-AKM
| caption           = 9A33BM3 [[Missile vehicle|transporter-launcher]] and radar vehicle of the upgraded 9K33M3 Osa-AKM.
| origin = Soviet Union
| origin             = Soviet Union
| type = 6×6 amphibious [[Surface-to-air missile|SAM]] system
| type               = 6×6 amphibious [[Surface-to-air missile|SAM]] system
<!-- Type selection -->| is_ranged =  
&lt;!-- Type selection --&gt;| is_ranged         =  
| is_bladed =  
| is_bladed         =  
| is_explosive =  
| is_explosive       =  
| is_artillery =  
| is_artillery       =  
| is_vehicle = yes
| is_vehicle         = yes
| is_missile =  
| is_missile         =  
| is_UK = yes
| is_UK             = yes
<!-- Service history -->| service = 1971–present
&lt;!-- Service history --&gt;| service           = 1971–present
| used_by = See list of [[#Operators|present and former operator]]
| used_by           = See list of [[#Operators|present and former operator]]
| wars = [[Iran–Iraq War]], [[1982 Lebanon War]], [[Angolan Civil War]], [[Western Sahara War]], [[Gulf War|Persian Gulf War]], [[2008 Russia-Georgia war]], [[2011 Libyan civil war]], [[Syrian Civil War]], [[2020 Armenian–Azerbaijani skirmishes]]<ref>{{cite web |title=Orbiter-3 downed in Artsakh hit with OSA AKM modernized in Armenia |url=https://www.lragir.am/en/2020/07/18/75099 |website=lragir.am , [[2020 Nagorno-Karabakh conflict]]
| wars               = {{plainlist|
|publisher=lragir.am |access-date=22 July 2020}}</ref><!-- Production history --> [[2020 Nagorno-Karabakh conflict]]
*[[Iran–Iraq War]]
| designer = [[NII-20]] Research Institute
*[[1982 Lebanon War]]
| design_date = 1960–1972
*[[Angolan Civil War]]
| manufacturer = [[Znamya Truda Plant]]
*[[Western Sahara War]]
| unit_cost =  
*[[Gulf War]]
| production_date = 1970–1988<ref>{{Cite web|url=http://www.kupol.ru/company/history|title=Прочие с долевым участием|website=www.kupol.ru|access-date=28 March 2012|archive-url=https://web.archive.org/web/20111206054446/http://www.kupol.ru/company/history|archive-date=6 December 2011|url-status=live}}</ref>
*[[Russo-Georgian War]]
| number = 1,200<ref>{{cite web |url=http://www.raspletin.ru/zenitnyy-raketnyy-kompleks-osa |title=Зенитный ракетный комплекс "Оса" |access-date=2012-03-28 |url-status=dead |archive-url=https://web.archive.org/web/20130524022815/http://www.raspletin.ru/zenitnyy-raketnyy-kompleks-osa |archive-date=24 May 2013}}</ref>
*[[First Libyan Civil War]]
| variants = OSA-A, OSA-AK, OSA-AKM, OSA-M
*[[Syrian Civil War]]
<!-- General specifications -->| spec_label = OSA-AKM
*[[2020 Armenian–Azerbaijani skirmishes]]&lt;ref&gt;{{cite web |title=Orbiter-3 downed in Artsakh hit with OSA AKM modernized in Armenia |url=https://www.lragir.am/en/2020/07/18/75099 |website=lragir.am |access-date=22 July 2020}}&lt;/ref&gt;
| weight = 17.5 [[tonne]]s
*[[Second Nagorno-Karabakh War]]
| length = 9.14 m
*[[Russo-Ukrainian War]]{{sfn|Williams|2023|page=29}}
| part_length =  
}}
| width = 2.75 m
[[2025 India-Pakistan conflict]]
| height = 4.20 m (radar mast stowed)
&lt;!-- Production history --&gt;| designer           = [[NII-20]] Research Institute
| diameter =  
| design_date       = 1960–1972
| crew = 5 soldiers
| manufacturer       = [[Znamya Truda Plant]]
<!-- Vehicle/missile specifications -->| armour =  
| unit_cost         =  
| primary_armament = 6 9M33, 9M33M1, 9M33M2 or 9M33M3 missiles
| production_date   = 1970–1988&lt;ref&gt;{{Cite web|url=http://www.kupol.ru/company/history|title=Прочие с долевым участием|website=www.kupol.ru|access-date=28 March 2012|archive-url=https://web.archive.org/web/20111206054446/http://www.kupol.ru/company/history|archive-date=6 December 2011|url-status=live}}&lt;/ref&gt;
| number             = 1,200&lt;ref&gt;{{cite web |url=http://www.raspletin.ru/zenitnyy-raketnyy-kompleks-osa |title=Зенитный ракетный комплекс "Оса" |access-date=2012-03-28 |archive-url=https://web.archive.org/web/20130524022815/http://www.raspletin.ru/zenitnyy-raketnyy-kompleks-osa |archive-date=24 May 2013}}&lt;/ref&gt;
| variants           = OSA-A, OSA-AK, OSA-AKM, OSA-M
&lt;!-- General specifications --&gt;| spec_label         = OSA-AKM
| weight             = 17.5 [[tonne]]s
| length             = {{cvt|9.14|m|ftin|abbr=on}}
| part_length       =  
| width             = {{cvt|2.75|m|ftin|abbr=on}}
| height             = {{cvt|4.20|m|ftin|abbr=on}} (radar mast stowed)
| diameter           =  
| crew               = 5 soldiers
&lt;!-- Vehicle/missile specifications --&gt;| armour             =  
| primary_armament   = 6 9M33, 9M33M1, 9M33M2 or 9M33M3 missiles
| secondary_armament =  
| secondary_armament =  
| engine = D20K300 diesel
| engine             = D20K300 diesel
| engine_power =  
| engine_power       =  
| pw_ratio =  
| pw_ratio           =  
| transmission =  
| transmission       =  
| payload_capacity =  
| payload_capacity   =  
| suspension =  
| suspension         =  
| clearance = 400 mm
| clearance         = {{cvt|400|mm|in|0|abbr=on}}
| wingspan =  
| wingspan           =  
| propellant =  
| propellant         =  
| fuel_capacity =  
| fuel_capacity     =  
| vehicle_range = 30 km<ref>{{cite web|url=https://www.globalsecurity.org/military/world/russia/sa-8-specs.htm|title=SA-8 GECKO / 9K33M3 Osa-AKM|first=John|last=Pike|website=www.globalsecurity.org|access-date=11 March 2018|archive-url=https://web.archive.org/web/20180312024036/https://www.globalsecurity.org/military/world/russia/sa-8-specs.htm|archive-date=12 March 2018|url-status=live}}</ref>
| vehicle_range     = {{cvt|500|km|mi|0|abbr=on}}{{sfn|O'Halloran|Foss|2002|page=145}}
| ceiling =  
| ceiling           =  
| altitude =  
| altitude           =  
| boost =  
| boost             =  
| speed = 80&nbsp;km/h<br /> 8&nbsp;km/h (swimming)
| speed             = {{cvt|80|km/h|mi/h|abbr=on}}&lt;br /&gt; {{cvt|8|km/h|mi/h|abbr=on}} (swimming)
| guidance =  
| guidance           =  
| steering =  
| steering           =  
| accuracy =  
| accuracy           =  
| launch_platform =  
| launch_platform   =  
| transport =  
| transport         =  
}}
}}


The '''9K33 ''Osa''''' ({{Lang-ru|9К33 «Оса»}}, literally "[[wasp]]"; [[NATO reporting name]] '''SA-8 ''Gecko''''') is a highly mobile, low-altitude, short-range tactical [[surface-to-air missile]] system developed in the [[Soviet Union]] in the 1960s and fielded in 1972. Its export version name is '''Romb'''.<ref>{{cite web|url=http://www.designation-systems.net/non-us/soviet.html|title=Designations of Soviet and Russian Military Aircraft and Missiles|access-date=14 November 2014|archive-url=https://web.archive.org/web/20171011201653/http://www.designation-systems.net/non-us/soviet.html|archive-date=11 October 2017|url-status=live}}</ref>
The '''9K33 ''Osa''''' ({{Langx|ru|9К33 «Оса»}}; English: "[[wasp]]"; [[NATO reporting name]] '''SA-8 ''Gecko''''') is a highly mobile, low-altitude, short-range tactical [[surface-to-air missile]] system developed in the [[Soviet Union]] in the 1960s and fielded in 1972. Its export version name is '''Romb'''.&lt;ref&gt;{{cite web|url=http://www.designation-systems.net/non-us/soviet.html|title=Designations of Soviet and Russian Military Aircraft and Missiles|access-date=14 November 2014|archive-url=https://web.archive.org/web/20171011201653/http://www.designation-systems.net/non-us/soviet.html|archive-date=11 October 2017|url-status=live}}&lt;/ref&gt;
 
==Description==
[[File:Zestaw przeciwrakietowy Osa.JPG|thumb|left|Polish OSA-AKM.]]
The Osa was the first mobile air defense missile system incorporating its own engagement radars on a single vehicle.{{Citation needed|date=November 2025}}


==Development==
All versions of the 9K33 feature all-in-one '''9A33''' [[Transporter erector launcher and radar|transporter erector launcher and radar (TELAR)]] vehicles which can detect, track and engage aircraft independently or with the aid of regimental surveillance [[radar]]s. The six-wheeled transport vehicles [[Bryansky Avtomobilny Zavod|BAZ]]-5937 are fully amphibious and air transportable. The road range is about 500&amp;nbsp;km.
Design work on an entirely new, self-propelled air defense guided missile system began in 1960 and was assigned to the Moscow-based NII-20 ({{Lang-ru|«Научно-исследовательский электромеханический институт»}}) research and design institute under lead designer M.M. Kosichkin. The program initially suffered numerous delays and setbacks due to poorly formulated performance and tactical requirements, as this was a pioneering battlefield air defense system with no equivalents in existence at the time, and no doctrinal experience with such a weapon. P.M. Chukadov was assigned project leader in 1965 after a thorough review of the stalled program, and the Osa would ultimately see service acceptance in 1972 after a period of trials.


==Description==
The 1S51M3-2 radar system of the 9K33 Osa [[TELAR]] received the [[NATO]] [[codename]] ''Land Roll''. It was derived from the naval 'Pop Group' radar system but is smaller as it does not require a stabilisation system. An improved system, the Osa-AKM ([[NATO reporting name]] SA-8B 'Gecko' Mod 1) was first seen in Germany in 1980. It had improvements to the launcher configuration, carrying six missiles in ribbed containers.
[[File:Zestaw przeciwrakietowy Osa.JPG|thumb|left|The Polish OSA-AKM]]
Osa was the first mobile air defense missile system incorporating its own engagement radars on a single vehicle.


All versions of the 9K33 feature all-in-one '''9A33''' [[Missile vehicle|transporter-launcher]] and radar vehicles which can detect, track and engage aircraft independently or with the aid of regimental surveillance [[radar]]s. The six-wheeled transport vehicles [[Bryansky Avtomobilny Zavod|BAZ]]-5937 are fully amphibious and air transportable. The road range is about 500&nbsp;km.
The system is reported to be of the frequency-agile monopulse type. It consists of an elliptical rotating surveillance antenna mounted on top of the array, operates in H band (6 to 8&amp;nbsp;GHz) and has a 30&amp;nbsp;km acquisition range against most targets. The large pulsed J band (14.5&amp;nbsp;GHz) engagement antenna is mounted below it in the centre of the array and has a maximum tracking range of about 20&amp;nbsp;km.


The 1S51M3-2 radar system on the 9K33 Osa TELAR received the [[NATO]] [[codename]] ''Land Roll''. It was derived from the naval 'Pop Group' radar system but is smaller since it does not require the elaborate stabilisation system. An improved system, the Osa-AKM ([[NATO reporting name]] SA-8B 'Gecko' Mod 1) was first seen in Germany in 1980. It had improvements added to the launcher configuration, carrying six missiles in ribbed containers. The system is reported to be of the frequency-agile monopulse type. It consists of an elliptical rotating surveillance antenna mounted on top of the array, operates in H band (6 to 8&nbsp;GHz) and has a 30&nbsp;km acquisition range against most targets. The large pulsed J band (14.5&nbsp;GHz) engagement antenna is mounted below it in the centre of the array and has a maximum tracking range of about 20&nbsp;km.
Mounted on either side of the tracking radar antenna is a small J band parabolic dish antenna to track the missile. Below it is a small circular antenna which emits an I band uplink capture beam to gather the missile shortly after launch. The final antennas in the array are two small white rectangular ones, one on either side of the array mounted alongside the I band, used for command uplink to the missile. The twin antenna system permits the 'Land Roll' radar to control up to two missiles simultaneously against a single target.  


Mounted on either side of the tracking radar antenna is a small J band parabolic dish antenna to track the missile. Below that is a small circular antenna which emits an I band uplink capture beam to gather the missile shortly after launch. The final antennas in the array are two small white rectangular ones, one on either side of the array mounted alongside the I band. These are used for command uplink to the missile. This twin antenna system permits the 'Land Roll' radar to control up to two missiles simultaneously against a single target. Furthermore, the two missiles can be guided on different frequencies to further complicate ECM. There is also a tubular device fitted to and above the tracking radar; this is a 9Sh33 electro-optical tracker. It can be used to track the target when the main tracking radar is jammed by ECM.
Two missiles can be guided on different frequencies to further complicate [[electronic countermeasure]]s (ECM). The 9Sh33 electro optical tracker is fitted to and above the tracking radar, used to track the target when the main tracking radar is jammed by ECM.


A 9K33 battery comprises four 9A33B TELAR vehicles and two '''9T217''' transloader vehicles on BAZ-5939 chassis with reload missiles and a crane. A reload time of five minutes has been reported per TELAR.
A 9K33 battery comprises four 9A33B TELAR vehicles and two '''9T217''' transloader vehicles on BAZ-5939 chassis with reload missiles and a crane. A reload time of five minutes has been reported per TELAR.


In addition to the TELARs, each regiment is also assigned a single radar [[collimation]] vehicle '''9V914''' (initially on the BAZ-5938 chassis but more often found on the ZiL-131 truck). This vehicle assists in the alignment of the TELAR's radar systems, ensuring accurate target tracking and engagement.
In addition to the TELARs, each regiment is assigned a '''9V914''' radar [[collimation]] vehicle (initially on the [[BAZ-5938]] chassis but more often found on the [[ZIL-131|ZiL-131]] truck) that assists in the alignment of the TELAR's radar systems, ensuring accurate target tracking and engagement.


==Variants==
==Variants==
[[File:SA-N-4.jpg|thumb|right|SA-N-4 launcher covered by a circular plate on the ''Slava''-class cruiser ''Marshal Ustinov''.]]
[[File:SA-N-4.jpg|thumb|right|SA-N-4 launcher covered by a circular plate on the ''Slava''-class cruiser ''Marshal Ustinov''.]]
* '''9K33 "Osa"''' ([[United States Department of Defense|US DoD]] designation '''SA-8A "Gecko"''') began development in 1960 and was introduced in 1971–1972 with four exposed 9M33 missiles per TELAR '''9A33B''' and a maximum range of {{convert|12|km|mi|abbr=on}}.
* '''9K33 "Osa"''' ([[United States Department of Defense|US DoD]] designation '''SA-8A "Gecko"''') began development in 1960 and was introduced in 1971–1972 with four exposed 9M33 missiles per '''9A33B''' TELAR and maximum range of {{convert|12|km|mi|abbr=on}}.
* '''4K33 "OSA-M"''' ([[NATO reporting name]] '''SA-N-4 "Gecko"''') was introduced in 1972 and is the naval version of the system with two 9M33M missiles on a Zif-122 retractable rotating launcher and improved performance. It has been installed on {{sclass2|Gepard|frigate|1}}, [[Kara-class cruiser|Kara-class guided missile cruisers]], [[Kiev-class aircraft carrier|''Kiev''-class VTOL cruisers]] and also the ''Kirov'', ''Slava'' and Krivak classes.
* '''4K33 "OSA-M"''' ([[NATO reporting name]] '''SA-N-4 "Gecko"''') was introduced in 1972 and is the naval version of the system with two 9M33M missiles on a ZIF-122 retractable rotating launcher and improved performance. It has been installed on {{sclass2|Gepard|frigate|1}}, [[Kara-class cruiser|Kara-class guided missile cruisers]], [[Kiev-class aircraft carrier|''Kiev''-class VTOL cruisers]] and also the ''Kirov'', ''Slava'' and Krivak classes.
* '''9K33M2 "Osa-AK"''' (US DoD designation '''SA-8B "Gecko Mod-0"''') with TELAR '''9A33BM2''' was introduced in 1975 with the new six-missile box launcher, each '''9M33M2''' missile being a [[sealed round]].
* '''9K33M2 "Osa-AK"''' (US DoD designation '''SA-8B "Gecko Mod-0"''') with '''9A33BM2''' TELAR was introduced in 1975 with the new six-missile box launcher, each '''9M33M2''' missile being a [[sealed round]].
* '''9K33M3 "Osa-AKM"''' (US DoD designation '''SA-8B "Gecko Mod-1"''') with TELAR '''9A33BM3''' and missiles '''9M33M3''' was introduced in 1980 with the maximum range extended to {{convert|15|km|mi|abbr=on}} and maximum altitude to 12&nbsp;km (40,000&nbsp;ft) as explained above. Most OSA-AKM systems also feature an [[Identification friend or foe|IFF antenna]].
* '''9K33M3 "Osa-AKM"''' (US DoD designation '''SA-8B "Gecko Mod-1"''') with '''9A33BM3''' TELAR and '''9M33M3''' missiles was introduced in 1980 with the maximum range extended to {{convert|15|km|mi|abbr=on}} and maximum altitude to 12&amp;nbsp;km (40,000&amp;nbsp;ft) as explained above. Most OSA-AKM systems also feature an [[Identification friend or foe|IFF]] antenna.
* '''Saman''' and '''Saman-M''' (Russian Саман – ''adobe'') is a development of the Osa\Osa-M system into target drones, used for testing and training with [[air defense]] systems, including SAMs.
* '''Saman''' and '''Saman-M''' (Russian Саман – ''adobe'') is a development of the Osa\Osa-M system into target drones, used for testing and training with [[air defense]] systems, including SAMs.
The 9K33M3 is also able{{Citation needed|date=July 2008}} to use the 9A33BM3 missiles which are wire-guided, presumably for use in an [[Electronic countermeasures|ECM]]-heavy environment where the radio command guidance may not operate properly.
The 9K33M3 is also able{{Citation needed|date=July 2008}} to use wire-guided missiles, presumably for use in an [[Electronic countermeasures|ECM]]-heavy environment where radio command guidance may not operate properly.


==Missiles==
==Missiles==
{{Infobox weapon
{{Infobox weapon
|name=9M33
| name               = 9M33
|image=Osa-AKM 9M33M3.jpg
| image             = Osa-AKM 9M33M3.jpg
|image_size=300
| image_size         = 300
|caption=The 9M33M3 missile
| caption           = 9M33M3 missile
|origin=Soviet Union
| origin             = Soviet Union
|type=[[Surface-to-air missile]]
| type               = [[Surface-to-air missile]]
<!-- Type selection -->
&lt;!-- Type selection --&gt;| is_ranged         =  
|is_ranged=
| is_bladed         =  
|is_bladed=
| is_explosive       =  
|is_explosive=
| is_artillery       =  
|is_artillery=
| is_vehicle         =  
|is_vehicle=
| is_missile         = yes
|is_missile=yes
| is_UK             = yes
|is_UK=yes
&lt;!-- Service history --&gt;| service           = 1971–present
<!-- Service history -->
| used_by           = See list of [[#Operators|present and former operator]]
|service=1971–present
&lt;!-- Production history --&gt;| designer           = MKB "Fakel"
|used_by=See list of [[#Operators|present and former operator]]
| design_date       = 1960–1972
<!-- Production history -->
| manufacturer       = Znamya Truda Plant
|designer=MKB "Fakel"
| unit_cost         =  
|design_date=1960–1972
| production_date   = 1970–1988
|manufacturer=Znamya Truda Plant
| number             =  
|unit_cost=
| variants           = 9M33, 9M33M1, 9M33M2, 9M33M3, 9A33BM3
|production_date=1970–1988
&lt;!-- General specifications --&gt;| spec_label         = 9K33M3&lt;ref name="fas"&gt;{{cite web |url=http://www.fas.org/man/dod-101/sys/missile/row/sa-8.htm |title=9K33M3 Osa-AKM |access-date=2008-07-13 |archive-url=https://web.archive.org/web/20130219014816/http://www.fas.org/man/dod-101/sys/missile/row/sa-8.htm |archive-date=19 February 2013 |url-status=live }}.&lt;/ref&gt;
|number=
| weight             = {{cvt|170|kg|lb|abbr=on}}
|variants=9M33, 9M33M1, 9M33M2, 9M33M3, 9A33BM3
| length             = {{cvt|3158|mm|ftin|abbr=on}}
<!-- General specifications -->
| part_length       =  
|spec_label=9K33M3<ref name="fas">{{cite web |url=http://www.fas.org/man/dod-101/sys/missile/row/sa-8.htm |title=9K33M3 Osa-AKM |access-date=2008-07-13 |archive-url=https://web.archive.org/web/20130219014816/http://www.fas.org/man/dod-101/sys/missile/row/sa-8.htm |archive-date=19 February 2013 |url-status=live }}.</ref>
| width             =  
|weight=170 kg
| height             =  
|length=3158 mm
| diameter           = {{cvt|209.6|mm|in|0|abbr=on}}
|part_length=
| crew               = &lt;!-- Explosive specifications --&gt;
|width=
| filling           = Frag-HE
|height=
| filling_weight     = {{cvt|15|kg|lb|abbr=on}}{{sfn|O'Halloran|Foss|2002|pages=144−145}}
|diameter=209.6 mm
| detonation         = Contact and proximity
|crew=
| yield             = &lt;!-- Vehicle/missile specifications --&gt;
<!-- Explosive specifications -->
| armour             =  
|filling=Frag-HE
| primary_armament   =  
|filling_weight= 16&nbsp;kg<ref>{{Cite web|url=https://www.globalsecurity.org/military/world/russia/sa-8-specs.htm|title=SA-8 GECKO / 9K33M3 Osa-AKM|website=www.globalsecurity.org|access-date=4 January 2021}}</ref>
| secondary_armament =  
|detonation=Contact and proximity
| engine             =  
|yield=
| engine_power       =  
<!-- Vehicle/missile specifications -->
| pw_ratio           =  
|armour=
| transmission       =  
|primary_armament=
| payload_capacity   =  
|secondary_armament=
| suspension         =  
|engine=
| clearance         =  
|engine_power=
| wingspan           =  
|pw_ratio=
| propellant         = Solid propellant rocket motor
|transmission=
| fuel_capacity     =  
|payload_capacity=
| vehicle_range     = {{convert|15|km|mi}}
|suspension=
| ceiling           =  
|clearance=
| altitude           = {{convert|12000|m|ft}}
|wingspan=
| boost             = 2 s boost, then 15 s sustain
|propellant=Solid propellant rocket motor
| speed             = 1020 m/s (Mach 2.9)
|fuel_capacity=
| guidance           = RF [[Missile guidance#Command to line-of-sight|CLOS]]
|vehicle_range={{convert|15|km|mi}}
| steering           = [[dual-thrust]] rocket motor
|ceiling=
| accuracy           = 5 m
|altitude={{convert|12000|m|ft}}
| launch_platform   = 9P35M2
|boost=2 s boost, then 15 s sustain
| transport         =  
|speed=1020 m/s
|guidance=RF [[Missile guidance#Command to Line-Of-Sight (CLOS)|CLOS]]
|steering=[[dual-thrust]] [[rocket motor]].
|accuracy=5 m
|launch_platform=9P35M2
|transport=
}}
}}
Engagement range for the early versions is approximately 2–9&nbsp;km (1.3–5.6 miles) and engagement altitudes of between 50 and 5,000 m (164–16,400&nbsp;ft). The '''9M33M2 "Osa-A"''' missile extends the ranges out to 1,500–10,000m (1–6.2 miles) and engagement altitudes to 25–5,000 m (82–16,400&nbsp;ft). The '''9M33M3''' missile greatly enhances the altitude engagement envelope to 10–12,000 m (33–42,500&nbsp;ft), and as such are also able to fly further (about 15&nbsp;km/9 miles) but the system is not able to engage targets at longer ranges, due to other factors such as the radar tracking of the missiles. The system is designed for use primarily against jet aircraft and helicopters in any kind of weather.


The 9M33 missiles are 3.158&nbsp;m (10.3&nbsp;ft) long, weigh 126&nbsp;kg (278&nbsp;lb) and use [[command guidance]]. There is also a backup low-light optical tracking system for heavy [[Electronic countermeasures|ECM]] environments. The latest 9M33M3 missiles have an increased total weight of 170&nbsp;kg (375&nbsp;lb) in order to provide the extended range coverage and larger warhead. Propulsion is provided by a [[dual-thrust]] [[solid fuel]] [[rocket motor]]. Both versions feature a missile speed of around [[Mach number|Mach]] 2.4 (peaking at around Mach 3) for a maximum target engagement speed of around Mach 1.4 for the original missile and Mach 1.6 for the M2\M3 missiles. The [[warhead]] for the initial and M2 versions weighs 19&nbsp;kg (42 pounds), increased to 40&nbsp;kg (88&nbsp;lb) in the M3 version to improve performance against helicopters. All versions have impact and proximity fuzes.
{{Unreferenced section|date=July 2025}}


There have been unconfirmed reports of other possible versions of the missile with both infrared and semi-active radar terminal homing seekers.
Engagement range for early versions is approximately 2–9&amp;nbsp;km (1.3–5.6 mi) with engagement altitudes of between 50 and 5,000 m (164–16,400&amp;nbsp;ft). The '''9M33M2 "Osa-A"''' missile extends the ranges to 1.5–10&amp;nbsp;km (1–6.2 mi) and engagement altitudes to 25–5,000 m (82–16,400&amp;nbsp;ft). The '''9M33M3''' missile greatly enhances the altitude engagement envelope to 10–12,000 m (33–42,500&amp;nbsp;ft), and are able to travel further (about 15&amp;nbsp;km/9 mi). However, the system is unable to engage targets at longer ranges, due to other factors such as the limitations of the radar tracking of the missiles. The system is designed for use primarily against jet aircraft and helicopters in any weather.


Each TELAR is able to launch and guide two missiles against one target simultaneously. [[Kill probability]] is quoted as being 0.35–0.85 for the Osa and 0.55–0.85 for the Osa-AK and Osa-AKM (presumably depending upon target aspect, speed, maneuverability and radar cross section). Reaction time (from target detection to launch) is around 26 seconds. Time to prepare for engagements from being in transit is around 4 minutes and missile reloading takes around 5 minutes. Each battery of four TELARs is usually accompanied by two reload vehicles carrying 18 missiles in sets of three, with a crane mounted on the reload vehicles to assist in moving the missiles.
The 9M33 missiles are 3.158&amp;nbsp;m (10.3&amp;nbsp;ft) long, weigh 126&amp;nbsp;kg (278&amp;nbsp;lb) and use [[command guidance]]. A backup low-light optical tracking system is available for heavy [[Electronic countermeasures|ECM]] environments. The latest 9M33M3 missiles have an increased total weight of 170&amp;nbsp;kg (375&amp;nbsp;lb) in order to provide extended range coverage and larger warhead. Propulsion is provided by a [[dual-thrust]] [[solid fuel]] [[rocket motor]]. Both versions feature a missile speed of around [[Mach number|Mach]] 2.4 (peaking at around Mach 3) for a maximum target engagement speed of around Mach 1.4 for the original 9M33 missile and Mach 1.6 for the 9M33M2\M3 missiles. The [[warhead]] for 9M33/M2 versions weighs 19&amp;nbsp;kg (42 lb), increased to 40&amp;nbsp;kg (88&amp;nbsp;lb) in the M3 version to improve performance against helicopters. All versions have impact and proximity fuzes.


When launched the booster motor burns for two seconds, this permits the radar to gather and control it at very short ranges (about 1.6&nbsp;km). The sustainer motor has a 15-second burn, bringing the missile to a top speed of about Mach 2. Once launched the missile is command-guided for the whole flight, and the warhead is detonated by its proximity fuze or possible command. The warhead is said to have a lethal radius of 5 m at low altitude against an F-4 Phantom size target. {{Citation needed|date=July 2008}}
Each TELAR is able to launch and guide two missiles against one target simultaneously. [[Kill probability]] is quoted as 0.35–0.85 for the Osa and 0.55–0.85 for the Osa-AK and Osa-AKM (presumably depending upon target aspect, speed, maneuverability and radar cross section). Reaction time (from target detection to launch) is around 26 seconds. Preparation time for engagements from transit is around 4 minutes and missile reloading takes around 5 minutes. Each battery of four TELARs is usually accompanied by two reload vehicles carrying 18 missiles in sets of three, with a crane mounted on the reload vehicles to assist in moving the missiles.
 
When launched, the booster motor burns for two seconds, permitting the radar to gather and control it at very short ranges (about 1.6&amp;nbsp;km). The sustainer motor burns for 15 seconds, bringing the missile to a top speed of about Mach 2. Once launched, the missile is command-guided for the whole flight, and the warhead is detonated by its proximity fuze or possibly command. The warhead is said to have a lethal radius of 5 m at low altitude against an [[McDonnell Douglas F-4 Phantom II|F-4 Phantom II]] size target. {{Citation needed|date=July 2008}}


==Radars==
==Radars==
[[File:Longtrack.jpg|thumb|P-40 'Long Track' radar set]]
[[File:Longtrack.jpg|thumb|P-40 'Long Track' radar set]]
* '''1S51M3''' ("Land Roll") – C band target acquisition radar, H band conical scan target tracking radar and two J band pulse mode fire control radars (range 35&nbsp;km/22 miles for acquisition, 30&nbsp;km/19 miles for tracking and 25&nbsp;km/16 miles for guidance). Mounted on the TELAR.
* '''1S51M3''' ("Land Roll") – [[C band (NATO)|C band]] target acquisition radar, [[H band (NATO)|H band]] conical scan target tracking radar and two [[J band (NATO)|J band]] pulse mode fire control radars (range 35&amp;nbsp;km/22 mi for acquisition, 30&amp;nbsp;km/19 mi for tracking and 25&amp;nbsp;km/16 mi for guidance). Mounted on the TELAR.
* '''[[P-40 radar|P-40]]''' ("Long Track") – E band early warning radar (also used by the [[2K11 Krug]] and [[2K12 Kub]], range 175&nbsp;km/108 miles), mounted on a tracked vehicle (a modified [[AT-T]]).
* '''[[P-40 radar|P-40]]''' ("Long Track") – [[E band (NATO)|E band]] early warning radar (also used by [[2K11 Krug]] and [[2K12 Kub]], range 175&amp;nbsp;km/108 mi), mounted on a tracked vehicle (a modified [[AT-T]]).
* '''[[P-15 radar|P-15]]''' ("Flat Face A") or '''[[P-19 radar|P-19]]''' ("Flat Face B") or '''P-15M(2)''' ("Squat Eye") – 380&nbsp;kW C band target acquisition radar (also used by the [[S-125 Neva/Pechora|S-125 Neva]] and 2K12 Kub, range 250&nbsp;km/155 miles), mounted on a ZiL-131 truck.
* '''[[P-15 radar|P-15]]''' ("Flat Face A") or '''[[P-19 radar|P-19]]''' ("Flat Face B") or '''P-15M(2)''' ("Squat Eye") – 380&amp;nbsp;kW C band target acquisition radar (also used by the [[S-125 Neva/Pechora]] and 2K12 Kub, range 250&amp;nbsp;km/155 mi), mounted on a ZiL-131 truck.
* '''PRV-9''' or '''PRV-16''' ("Thin Skin") – E band height finding radar (also used by the [[2K11 Krug]] and 2K12 Kub, range 240&nbsp;km/148 miles), mounted on a KrAZ-255B truck.
* '''PRV-9''' or '''PRV-16''' ("Thin Skin") – E band height finding radar (also used by 2K11 Krug and 2K12 Kub, range 240&amp;nbsp;km/148 mi), mounted on a KrAZ-255B truck.


==Deployment and history==
==Deployment and operational history==
Produced by the [[USSR]]/Russia, there are many export customers for this system, including [[Cuba]], Greece (from the former [[East Germany]]), [[Polish military|Poland]], [[Syria]], [[Ecuador]] and [[Iraq]].
Produced by the [[Soviet Union]]/[[Russia]], the system was exported to many countries, including [[Cuba]], [[Greece]] (from the former [[East Germany]]), [[Polish military|Poland]], [[Syria]], [[Ecuador]] and [[Iraq]].


After the [[1982 Lebanon war|Israeli invasion of Lebanon]] in 1982, in which Syrian air defenses were oblitarated by a massive air campaign against Syrian SAM sites in the Beqaa valley, the Syrians managed to deploy SA-8s. At least one [[F-4 Phantom]] in a [[Supression of enemy air defenses|SEAD]] mission was shot down on July 24, 1982 by an SA-8 system. The [[Weapon systems officer|WSO]] (back seater), Aharon Katz was killed, while the pilot, Gil Fogel, survived and was held captive by the Syrians for two years.<ref>{{Cite book|url=https://books.google.com/books?id=4cs7BAAAQBAJ&pg=PA53|title = The Sword of David: The Israeli Air Force at War|isbn = 9781781592908|last1 = McCarthy|first1 = Don|date = 14 November 2013}}</ref>
During the [[1982 Lebanon war]] in which Syrian air defenses were obliterated by a massive air campaign against Syrian SAM sites in the Beqaa valley, the Syrians deployed Osas. An [[F-4 Phantom]] in a [[Supression of enemy air defenses|SEAD]] mission was shot down on 24 July 1982 by an Osa system. The [[Weapon systems officer|WSO]] (back seater), Aharon Katz was killed, while the pilot, Gil Fogel, survived and was held captive by the Syrians for two years.&lt;ref&gt;{{Cite book|url=https://books.google.com/books?id=4cs7BAAAQBAJ&amp;pg=PA53|title = The Sword of David: The Israeli Air Force at War|isbn = 978-1-78159-290-8|last1 = McCarthy|first1 = Don|date = 14 November 2013| publisher=Pen and Sword }}&lt;/ref&gt;


In late 1980s, Cuba deployed several 9K33 Osa units in southern Angola which posed a significant threat to [[South African Air Force|South African]] [[Air supremacy|air superiority]] at shorter ranges.<ref>George, Edward in: ''The Cuban Intervention in Angola, 1965–1991'', Frank Cass, London, New York, 2005, {{ISBN|0-415-35015-8}}, p. 236-237</ref> The South African [[61 Mechanised Battalion Group]] captured an intact 9K33 Osa anti-aircraft missile system on 3 October 1987 during the [[Battle of Cuito Cuanavale]]. This was the first time that such a system had ever fallen into the hands of non-Warsaw Pact forces, giving Western intelligence agencies an opportunity to examine an important Soviet-bloc weapon system.<ref>Turton, A.R. 2010. ''Shaking Hands with Billy''. Durban: Just Done Publications.</ref>
In the late 1980s, Cuba deployed several 9K33 Osa units in southern Angola, which posed a significant threat to [[South African Air Force|South African]] [[Air supremacy|air superiority]] at shorter ranges.&lt;ref&gt;George, Edward in: ''The Cuban Intervention in Angola, 1965–1991'', Frank Cass, London, New York, 2005, {{ISBN|0-415-35015-8}}, p. 236-237&lt;/ref&gt; The South African [[61 Mechanised Battalion Group]] captured an intact 9K33 Osa anti-aircraft missile system on 3 October 1987 during the [[Battle of Cuito Cuanavale]]. This was the first time that such a system had fallen into possession of non-Warsaw Pact forces, giving Western intelligence agencies an opportunity to examine an important Soviet-bloc weapon system.&lt;ref&gt;Turton, A.R. 2010. ''Shaking Hands with Billy''. Durban: Just Done Publications.&lt;/ref&gt;


Iraq used Osa systems during the 1991 [[Gulf War]].
Iraq fielded Osa systems during the [[Gulf War|1991 Gulf War]]. The Soviets claimed that it was the most effective system alongside the [[ZSU-23-4 Shilka]] at shooting down [[Tomahawk (missile family)|Tomahawk cruise missile]]s, with several downings credited to hits from Osa weapons.{{sfn|O'Halloran|Foss|2002|page=143}}


The system also saw use in the [[2008 Russo-Georgian War]] by both the Georgian and Russian militaries.
The system also saw use in the [[2008 Russo-Georgian War]] by both the Georgian and Russian militaries.


Libyan 9K33 Osa were used, and some destroyed during the 2011 Libyan Civil War by NATO airstrikes.<ref>{{cite web|url=http://www.armyrecognition.com/march_2011_news_defense_military_army_industry_uk/several_libyan_arrmored_vehicles_and_anti-aircraft_systems_destroy_by_the_coalition_forces_2003115.html|title=Several Libyan arrmored vehicles and anti-aircraft systems destroy by the coalition forces|access-date=14 November 2014|archive-url=https://web.archive.org/web/20150923211229/http://www.armyrecognition.com/march_2011_news_defense_military_army_industry_uk/several_libyan_arrmored_vehicles_and_anti-aircraft_systems_destroy_by_the_coalition_forces_2003115.html|archive-date=23 September 2015|url-status=live}}</ref><ref>{{cite news | url=http://edition.cnn.com/2011/WORLD/africa/03/22/libya.civil.war/index.html?hpt=T1 | work=CNN | title=U.S. aviators rescued; Gadhafi remains defiant | date=2011-08-24 | access-date=22 March 2011 | archive-url=https://web.archive.org/web/20110324052912/http://edition.cnn.com/2011/WORLD/africa/03/22/libya.civil.war/index.html?hpt=T1 | archive-date=24 March 2011 | url-status=live }}</ref>
Libya deployed 9K33 Osa, with some destroyed during the [[Libyan civil war (2011)|2011 Libyan Civil War]] by NATO airstrikes.&lt;ref&gt;{{cite news | url=http://edition.cnn.com/2011/WORLD/africa/03/22/libya.civil.war/index.html?hpt=T1 | work=CNN | title=U.S. aviators rescued; Gadhafi remains defiant | date=2011-08-24 | access-date=22 March 2011 | archive-url=https://web.archive.org/web/20110324052912/http://edition.cnn.com/2011/WORLD/africa/03/22/libya.civil.war/index.html?hpt=T1 | archive-date=24 March 2011 | url-status=dead }}&lt;/ref&gt;


===Syrian Civil War===
=== Syrian Civil War ===
During the [[Syrian civil war]] in December 2012, rebels fighting [[Bashar al-Assad]]'s forces managed to capture at least one Osa system after a raid on an air defense base near Damascus.<ref>{{youTube|iKoYg9xEGMs|SYRIAN REBELS CAPTURE MOBILE ROCKET LAUNCHER; During attacks [GunFire + Chanting]}}</ref> Later, on different occasions, videos showing rebels using the system appeared.
 
In October 2012, fighters from insurgent faction [[Jaysh al-Islam|Liwa al-Islam]] (renamed Jaish al-Islam the following year) captured three operational 9K33 Osa mobile SAMs in Damascus' Eastern Ghouta. In the following years, at least six missiles were launched at helicopters from the Syrian Arab Air Force flying over the area: on the 29th of July 2013, a Mi-8/17 was apparently destroyed; a second launch, whose result is unclear, occurred at an unknown date in the following months; on 16th of January 2014, a Mi-17 was shot down; two days later, another missile missed its intended target; an undated video released in March 2014 by Jaysh al-Islam showed a 9M33 missile exploding in the proximity of a Mi-8/17. In October and December 2015, the Russian Ministry of Defence claimed its forces had destroyed Osa systems operated by the insurgents in the Eastern Ghouta. No further launch was reported until the 26th of June 2016, when a missile heavily damaged a Mi-25, forcing it to make an emergency landing at Damascus International Airport.&lt;ref&gt;https://www.oryxspioenkop.com/2016/10/hide-and-seek-story-of-jaish-al-islams.html?m=1&lt;/ref&gt; All of Jaysh al-Islam's Osa systems were likely retaken, or destroyed, upon the Syrian Arab Army's recapture of the Eastern Ghouta in April 2018.
 
=== Yemeni Civil War ===
On 29 November 2019, Russian sources speculated a Soviet-made 9K33 Osa fired by Houthi forces shot down a [[Saudi Arabian Army|Saudi Arabian Army Aviation]] [[AH-64 Apache]] in Yemen.&lt;ref&gt;{{Cite web|url=https://www.mbs.news/homepage-infinite-scroll|title=Homepage – Infinite Scroll &amp;#124; MBS News|access-date=4 January 2021|archive-date=21 June 2020|archive-url=https://web.archive.org/web/20200621071600/https://www.mbs.news/homepage-infinite-scroll/}}&lt;/ref&gt;&lt;ref&gt;{{Cite web|url=https://theaviationist.com/2019/12/02/houthi-rebels-claim-to-have-shot-down-saudi-apache-gunship-and-wing-loong-uav-in-yemen/|title=Houthi Rebels Claim To Have Shot Down Saudi Apache Gunship And Wing Loong UAV in Yemen.|date=2 December 2019|access-date=4 January 2021}}&lt;/ref&gt; Neither Yemen nor Iran had any 9K33 Osa in their armed forces, while known Houthi-operated systems are based on the Soviet-made [[2K12 Kub]] surface-to-air missile system which employs a two-stage rocket engine, and the air-to-air missiles [[R-73 (missile)|R-73]] and [[R-27 (air-to-air missile)|R-27T]] which both have a single-stage rocket engine.&lt;ref&gt;{{Cite web|url=https://debriefer.net/en/news-10890.html|title=Houthis reveal 2 new air defense systems|date=25 August 2019|website=debriefer.net|access-date=4 January 2021}}&lt;/ref&gt;
 
===2020 Nagorno-Karabakh conflict===
The [[Armenian Air Defense]] extensively employed 9K33 Osa missile systems during the [[2020 Nagorno-Karabakh conflict]]. During the opening days of the war, several videos released by the Azerbaijani military showed several Armenian 9K33 Osa and [[9K35 Strela-10]] vehicles destroyed by [[Bayraktar TB2]] armed drones,&lt;ref&gt;{{Cite web|url=https://www.globaldefensecorp.com/2020/09/27/azerbaijan-destroyed-twelve-9k33-osa-short-range-anti-aircraft-systems-of-armenia/|title=Azerbaijan used TB2 drone to destroy twelve 9K33 Osa short-range anti-aircraft systems of Armenia|date=27 September 2020|access-date=4 January 2021}}&lt;/ref&gt;&lt;ref&gt;{{Cite web|url=https://www.thedrive.com/the-war-zone/36777/everything-we-know-about-the-fighting-that-has-erupted-between-armenia-and-azerbaijan|title=Everything We Know About The Fighting That Has Erupted Between Armenia And Azerbaijan|first1=Joseph |last1=Trevithick |first2=Thomas|last2=Newdick|website=The Drive|date=28 September 2020 |access-date=4 January 2021}}&lt;/ref&gt; with a number of them destroyed in the following weeks when found on the battlefield.&lt;ref&gt;{{Cite web|url=https://www.news.az/news/span-classred-highlightazerbaijan-destroys-another-osa-anti-aircraft-missile-system-of-armenian-troops-videospan|title=Azerbaijan destroys another "Osa" anti-aircraft missile system of Armenian troops (Video)|website=News.az|date=30 October 2020|access-date=4 January 2021}}&lt;/ref&gt; Twelve 9K33 Osa missile systems of Armenian Army were destroyed during the Nagorno-Karabakh conflict by Azerbaijani Bayraktar TB2s.&lt;ref&gt;{{Cite web|last=GDC|date=2020-09-27|title=Azerbaijan used TB2 drone to destroy twelve 9K33 Osa short-range anti-aircraft systems of Armenia|url=https://www.globaldefensecorp.com/2020/09/27/azerbaijan-destroyed-twelve-9k33-osa-short-range-anti-aircraft-systems-of-armenia/|access-date=2021-07-15|website=Global Defense Corp|language=en-US}}&lt;/ref&gt;
On 4 October 2020, an Azerbaijani Air force [[Sukhoi Su-25]] aircraft was shot down by Armenian forces, probably by a 9K33 Osa while targeting Armenian positions in Fuzuli. The pilot, [[Zaur Nudiraliyev|Colonel Zaur Nudiraliyev]], died in the crash. Azerbaijani officials acknowledged the loss in December 2020,&lt;ref&gt;{{cite web|url=https://azertag.az/xeber/Asir_dusmemek_uchun_Su_25_doyus_teyyaresini_dusmen_sengerine_chirpan_sehid_polkovnik_Zaur_Nudireliyev_VIDEO-1674563\?__cf_chl_jschl_tk__=b725bc84f4fc754319b8dacfc045414edc673601-1609122188-0-Af6CScwG-QNosTP35mL1VMUuA7xk9QvwWdKwniRdhsj0hqHSI-z9WtEsk5QxtMmDPnQvQBn23SBFwp9f4NqwF-hyHYEaLAglzOU2Gr_RjGZjydtw6WtHPbAcgVz_pcw_zLlVsuSE_DWb-mo41BpwriVI7mMrb_PREjIajOg8FF1aegs2XKZCd66ACdppK7KGTch91GRTqNURlaKtUTfnNamGxdN3b8OrOlvGIiwgGgNPQCzbXvrxe87y2cYs0j4mMu7jh4JF2QMjyr-rxR7reUdLxJ4DGq6bwgCqam-ysIap8yhh0EDq0vgy2Uqp3U7waxo9ow1MlMR01-2UMAd-I0AjRAYtkxd5RLE_lOnd2Nm6VcB1caSuEys30U2npsEorZHbBWtrUOxYrr7j1AVYtuVMVm77ACEC9B9SEQSAqto5bTZ7D_MS0MLdVqM9ZCxw3kyePr3h0cou4cqF7ynJhPRoxTmNpGW-_qmgk4E5YVVrRl2gWAUHta7VPlyyYhkWtjeE21Ho1ZKhSZWVLyZFj2NWIFV0qlbn_iiSotKuIKWEj2Wj7kdxvJ5xzVFGfoDVLg|title=Əsir düşməmək üçün "Su-25" döyüş təyyarəsini düşmən səngərinə çırpan şəhid polkovnik Zaur Nudirəliyev VİDEO|date=27 December 2020|language=Azerbaijani}}&lt;/ref&gt;&lt;ref&gt;{{cite web|url=https://www.almasdarnews.com/article/armenian-air-defenses-shot-down-azerbaijani-su-25-during-karabakh-conflict-pilot-was-killed-media/|title=Armenian air defenses shot down Azerbaijani Su-25 during Karabakh conflict, pilot was killed: media|work=Al-Masdar News|date=27 December 2020|access-date=16 January 2021|archive-date=22 January 2021|archive-url=https://web.archive.org/web/20210122065323/https://www.almasdarnews.com/article/armenian-air-defenses-shot-down-azerbaijani-su-25-during-karabakh-conflict-pilot-was-killed-media/|url-status=dead}}&lt;/ref&gt; with the 9K33 Osa vehicle possibly using passive detection and [[Shoot-and-scoot|shoot and scoot]] tactics to survive the Azerbaijani [[suppression of enemy air defenses|suppression of air defenses]] (SEAD) missions.&lt;ref&gt;{{Cite web|url=https://www.scramble.nl/military-news/combat-missions-of-the-azerbaijani-air-force-in-the-second-karabakh-war|title = Combat missions of the Azerbaijani Air Force in the Second Karabakh War| date=27 December 2020 }}&lt;/ref&gt;


On 31 July 2013, a video surfaced showing the successful missile launch for a rebel operated Osa system with a possible hit on a Syrian helicopter.{{citation needed|date=October 2020}}
===Russo-Ukrainian War===
[[File:Выдвижение автомобильной колонны снабжения ВС РФ в Харьковской обл. 004.png|thumb|Ukrainian 9K33 Osa launcher destroyed during the 2022 Russian invasion.]]
Both Russia and Ukraine have 9K33 Osa systems in their inventory.


On 16 January 2014, a video of the shooting down of a Syrian [[Mil Mi-8|Mi-8]] or [[Mil Mi-17|Mi-17]] helicopter was uploaded. The heavy damage on the plunging helicopter appeared to confirm the use of a bigger missile to hit the helicopter compared to the damage caused by MANPADS. Also, a video filming the TV screen inside the Osa vehicle matches another video taken outside. Another video surfaced on 18 January 2014, this time missing the intended target.{{citation needed|date=October 2020}} On 15 October 2015, the Russian military reported that a 9K33 Osa system captured by rebel forces was destroyed in an airstrike by a Russian [[Sukhoi Su-34|Su-34 bomber]] near [[Damascus]].{{citation needed|date=November 2020}} On 26 June 2016, [[Jaish al-Islam]] insurgents reported a new attempt to shoot down a helicopter with an Osa anti-aircraft system and released a video of the event.<ref>{{Cite web|url=https://twitter.com/Conflicts/status/747205373514354688|title=Conflict News on Twitter|access-date=4 January 2021}}</ref>
On 30 March 2019, during the [[War in Donbas (2014–2022)|war in Donbas]], the Ukrainian Joint Forces reported destruction of an Osa-AKM surface-to-air missile system along with a [[Zhitel]] [[R330Zh]] automatic jamming system.&lt;ref&gt;{{cite web |title=Escalation in Donbas: One Ukrainian soldier killed, four wounded amid 19 enemy attacks in past day |url=https://www.unian.info/war/10498560-escalation-in-donbas-one-ukrainian-soldier-killed-four-wounded-amid-19-enemy-attacks-in-past-day.html |url-status=live |archive-url=https://web.archive.org/web/20190330190917/https://www.unian.info/war/10498560-escalation-in-donbas-one-ukrainian-soldier-killed-four-wounded-amid-19-enemy-attacks-in-past-day.html |archive-date=30 March 2019 |access-date=31 March 2019}}&lt;/ref&gt;


===War in Donbas===
Senior sources of the [[Ukrainian Air Force]] stated that some Osa and [[Buk missile system|Buk]] systems were destroyed by [[Kh-31#Variants|Kh-31P]] and [[Kh-58]] [[anti-radiation missiles]] during the early stages of the [[Russian invasion of Ukraine|Russian invasion in the spring of 2022]].{{sfn|Williams|2023|page=29}} Following the invasion, ''The Washington Post'' reported that the United States was sending additional Osa systems to Ukraine.&lt;ref&gt;{{cite news |last1=Youssef |first1=Nancy A. |last2=Gordon |first2=Michael R. |title=WSJ News Exclusive {{!}} U.S. Sending Soviet Air Defense Systems It Secretly Acquired to Ukraine |url=https://www.wsj.com/articles/u-s-sending-soviet-air-defense-systems-it-secretly-acquired-to-ukraine-11647878422 |access-date=14 December 2024 |work=Wall Street Journal |date=21 March 2022}}&lt;/ref&gt; Poland has also provided Ukraine with an undisclosed number of systems in 2022.&lt;ref&gt;{{cite news |title=Polish Osa-AK air defense systems spotted in Ukraine |url=https://mil.in.ua/en/news/polish-osa-ak-air-defense-systems-spotted-in-ukraine/ |access-date=14 December 2024 |work=Militarnyi |date=31 December 2022}}&lt;/ref&gt;
The Ukrainian Joint Forces reported destruction of the Osa-AKM surface-to-air missile system of the DNR forces along with Zhitel R-330Zh automatic jamming system in Donbas on 30 March 2019.<ref>{{cite web|url=https://www.unian.info/war/10498560-escalation-in-donbas-one-ukrainian-soldier-killed-four-wounded-amid-19-enemy-attacks-in-past-day.html|title=Escalation in Donbas: One Ukrainian soldier killed, four wounded amid 19 enemy attacks in past day|access-date=31 March 2019|archive-url=https://web.archive.org/web/20190330190917/https://www.unian.info/war/10498560-escalation-in-donbas-one-ukrainian-soldier-killed-four-wounded-amid-19-enemy-attacks-in-past-day.html|archive-date=30 March 2019|url-status=live}}</ref>


=== Yemeni Civil War ===
In December 2024, it was revealed that all [[Ukrainian Ground Forces]] units operating the Osa received modified versions capable of firing the [[R-73 (missile)|R-73 air-to-air missile]] in response to the dwindling stocks of the 9M33 missile.&lt;ref name="Newdick"&gt;{{cite news |last1=Newdick |first1=Thomas |title=Ukraine’s SA-8 Gecko ‘FrankenSAM’ Adapted To Fire Air-To-Air Missiles Seen In New Detail |url=https://www.twz.com/land/ukraines-sa-8-gecko-frankensam-adapted-to-fire-air-to-air-missiles-seen-in-new-detail |access-date=14 December 2024 |work=The War Zone |date=12 December 2024}}&lt;/ref&gt;
On 29 November 2019, Russian sources speculated that a Soviet made 9K33 Osa fired by Houthi forces shot down a [[Saudi Arabian Army|Saudi Arabian Army Aviation]] [[AH-64 Apache]].<ref>{{Cite web|url=https://www.mbs.news/homepage-infinite-scroll|title=Homepage – Infinite Scroll &#124; MBS News|access-date=4 January 2021}}</ref><ref>{{Cite web|url=https://theaviationist.com/2019/12/02/houthi-rebels-claim-to-have-shot-down-saudi-apache-gunship-and-wing-loong-uav-in-yemen/|title=Houthi Rebels Claim To Have Shot Down Saudi Apache Gunship And Wing Loong UAV in Yemen.|date=2 December 2019|access-date=4 January 2021}}</ref> Neither Yemen nor Iran had any 9K33 Osa in their armed forces, while known Houthis' operated systems are based on the Soviet made surface-to-air [[2K12 Kub]] which employs a two-stage rocket engine and the air-to-air missiles [[R-73 (missile)|R-73]] and [[R-27 (air-to-air missile)|R-27T]] which both have a single stage rocket engine.<ref>{{Cite web|url=https://debriefer.net/en/news-10890.html|title=Houthis reveal 2 new air defense systems|date=25 August 2019|website=debriefer.net|access-date=4 January 2021}}</ref>


===2020 Nagorno-Karabakh conflict===
As of 16 December 2025, 34 losses of 9K33s by Russia and 23 by Ukraine are documented with photos or video by the [[OSINT]] website ''[[Oryx (website)|Oryx]]''.&lt;ref&gt;{{cite web |last1=Janovsky |first1=Jakub |last2=Naalsio |last3=Aloha |last4=Dan |last5=Kemal |last6=Alexander Black |title=Attack On Europe: Documenting Russian Equipment Losses During The Russian Invasion Of Ukraine |url=https://www.oryxspioenkop.com/2022/02/attack-on-europe-documenting-equipment.html |website=Oryx |access-date=14 December 2024 |date=24 February 2022}}&lt;/ref&gt;&lt;ref&gt;{{cite web |last1=Janovsky |first1=Jakub |last2=naalsio26 |last3=Aloha |last4=Dan |last5=Kemal |last6=Alexander |first6=Black |title=Attack On Europe: Documenting Ukrainian Equipment Losses During The Russian Invasion Of Ukraine |url=https://www.oryxspioenkop.com/2022/02/attack-on-europe-documenting-ukrainian.html |website=Oryx |access-date=14 December 2024 |date=24 February 2022}}&lt;/ref&gt; ''The War Zone'' notes that the number of losses could be higher since ''Oryx'' only tabulates visually confirmed losses.&lt;ref name="Newdick" /&gt;
The [[Armenian Air Defense]] extensively employed 9K33 Osa missile systems during the [[2020 Nagorno-Karabakh conflict]]. During the opening days of the war, several videos released by the Azerbaijani military showed several Armenian 9K33 Osa and [[9K35 Strela-10]] vehicles destroyed by [[Bayraktar TB2]] armed drones,<ref>{{Cite web|url=https://www.globaldefensecorp.com/2020/09/27/azerbaijan-destroyed-twelve-9k33-osa-short-range-anti-aircraft-systems-of-armenia/|title=Azerbaijan used TB2 drone to destroy twelve 9K33 Osa short-range anti-aircraft systems of Armenia|date=27 September 2020|access-date=4 January 2021}}</ref><ref>{{Cite web|url=https://www.thedrive.com/the-war-zone/36777/everything-we-know-about-the-fighting-that-has-erupted-between-armenia-and-azerbaijan|title=Everything We Know About The Fighting That Has Erupted Between Armenia And Azerbaijan|first=Joseph Trevithick and Thomas|last=Newdick|website=The Drive|access-date=4 January 2021}}</ref> with a number of them destroyed in the following weeks when found on the battlefield.<ref>{{Cite web|url=https://www.news.az/news/span-classred-highlightazerbaijan-destroys-another-osa-anti-aircraft-missile-system-of-armenian-troops-videospan|title=Azerbaijan destroys another "Osa" anti-aircraft missile system of Armenian troops (VIDEO)|first1=www mrsadiq info &#124; Sadiq|last1=Məmmədov|first2=www mrsadiq info &#124; Sadiq|last2=Məmmədov|website=News.az|date=30 October 2020|access-date=4 January 2021}}</ref> Twelve 9K33 Osa missile systems of Armenian Army destroyed during the Nagorno-Karabakh conflict by Azerbaijani Bayraktar TB2.<ref>{{Cite web|last=GDC|date=2020-09-27|title=Azerbaijan used TB2 drone to destroy twelve 9K33 Osa short-range anti-aircraft systems of Armenia|url=https://www.globaldefensecorp.com/2020/09/27/azerbaijan-destroyed-twelve-9k33-osa-short-range-anti-aircraft-systems-of-armenia/|access-date=2021-07-15|website=Global Defense Corp|language=en-US}}</ref>


On 4 October 2020, an Azerbaijani Air force [[Sukhoi Su-25]] aircraft was shot down, by Armenian forces, probably by a 9K33 Osa while targeting Armenian positions in Fuzuli. The pilot [[Zaur Nudiraliyev|Col. Zaur Nudiraliyev]] died in the crash. Azerbaijani officials acknowledged the loss in December 2020,<ref>{{cite web|url=https://azertag.az/xeber/Asir_dusmemek_uchun_Su_25_doyus_teyyaresini_dusmen_sengerine_chirpan_sehid_polkovnik_Zaur_Nudireliyev_VIDEO-1674563\?__cf_chl_jschl_tk__=b725bc84f4fc754319b8dacfc045414edc673601-1609122188-0-Af6CScwG-QNosTP35mL1VMUuA7xk9QvwWdKwniRdhsj0hqHSI-z9WtEsk5QxtMmDPnQvQBn23SBFwp9f4NqwF-hyHYEaLAglzOU2Gr_RjGZjydtw6WtHPbAcgVz_pcw_zLlVsuSE_DWb-mo41BpwriVI7mMrb_PREjIajOg8FF1aegs2XKZCd66ACdppK7KGTch91GRTqNURlaKtUTfnNamGxdN3b8OrOlvGIiwgGgNPQCzbXvrxe87y2cYs0j4mMu7jh4JF2QMjyr-rxR7reUdLxJ4DGq6bwgCqam-ysIap8yhh0EDq0vgy2Uqp3U7waxo9ow1MlMR01-2UMAd-I0AjRAYtkxd5RLE_lOnd2Nm6VcB1caSuEys30U2npsEorZHbBWtrUOxYrr7j1AVYtuVMVm77ACEC9B9SEQSAqto5bTZ7D_MS0MLdVqM9ZCxw3kyePr3h0cou4cqF7ynJhPRoxTmNpGW-_qmgk4E5YVVrRl2gWAUHta7VPlyyYhkWtjeE21Ho1ZKhSZWVLyZFj2NWIFV0qlbn_iiSotKuIKWEj2Wj7kdxvJ5xzVFGfoDVLg|title=Əsir düşməmək üçün "Su-25" döyüş təyyarəsini düşmən səngərinə çırpan şəhid polkovnik Zaur Nudirəliyev VİDEO|date=27 December 2020|language=Azerbaijani}}</ref><ref>{{cite web|url=https://www.almasdarnews.com/article/armenian-air-defenses-shot-down-azerbaijani-su-25-during-karabakh-conflict-pilot-was-killed-media/|title=Armenian air defenses shot down Azerbaijani Su-25 during Karabakh conflict, pilot was killed: media|work=Al-Masdar News|date=27 December 2020}}</ref> with the 9K33 Osa vehicle possibly using passive detection and shoot and scoot tactics to survive the Azerbaijani suppression of air defenses missions.<ref>{{Cite web|url=https://www.scramble.nl/military-news/combat-missions-of-the-azerbaijani-air-force-in-the-second-karabakh-war|title = Combat missions of the Azerbaijani Air Force in the Second Karabakh War}}</ref>
=== 2025 India-Pakistan conflict ===
The Indian Army employed its Osa regiments as part of its Integrated Air Defence System during the [[2025 India–Pakistan conflict|2025 India-Pakistan Conflict]]. Footage shot by Asian News International after the conflict, shows that an Osa regiment scored a number of claimed kills against low-flying Pakistani drones, such as the Turkish made [[YIHA-III|Yiha-IIIs]].&lt;ref&gt;{{Cite web |agency=Asian News International |date=May 19, 2025 |title=Amritsar, Punjab: Indian Army shows a demo of how Indian Air Defence systems... |url=https://x.com/ANI/status/1924301968450937319}}&lt;/ref&gt;


==Command post==
==Command post==
PPRU-M1 (PPRU-M1-2) is a mobile command center for a mixed grouping of air defense forces, such as 9K33 Osa and [[Tor missile system]], [[9K22 Tunguska]], [[9K35 Strela-10]], [[9K38 Igla]]<ref>{{cite web|title=Зенитные ракетные системы и комплексы|url=http://www.almaz-antey.ru/catalogue/millitary_catalogue/|url-status=dead|archive-url=https://web.archive.org/web/20110926124750/http://www.almaz-antey.ru/catalogue/millitary_catalogue|archive-date=26 September 2011|access-date=14 November 2014|language=ru}}</ref>
[[PPRU-1|PPRU-M1]] (PPRU-M1-2) is a mobile command center for a mixed grouping of air defense forces, including 9K33 Osa, and [[Tor missile system]], [[2K22 Tunguska]], [[9K35 Strela-10]] and [[9K38 Igla]].&lt;ref&gt;{{cite web|title=Зенитные ракетные системы и комплексы|url=http://www.almaz-antey.ru/catalogue/millitary_catalogue/|archive-url=https://web.archive.org/web/20110926124750/http://www.almaz-antey.ru/catalogue/millitary_catalogue|archive-date=26 September 2011|access-date=14 November 2014|language=ru}}&lt;/ref&gt;


==Upgrades==
==Upgrades==
===Belarus===
===Belarus===
[[File:Т38 «Стилет».JPG|thumb|T38 Stilet]]
[[File:Т38 «Стилет».JPG|thumb|T38 Stilet]]
* The '''9K33-1T "Osa-1T"''' was developed by UE "Tetraedr" from Belarus. A SAM system comprises combat assets and technical support means, including
* '''9K33-1T "Osa-1T"''' was developed by UE "Tetraedr" from Belarus. A SAM system comprises combat assets and technical support means, including:
** the '''9А33-1Т''' TELAR or "Combat Vehicle" (CV), based on the original BAZ-5937 (or the new MZKT-69222) and equipped with a new day/night camera system OES-1T instead of the original day-only 9Sh33 or 9Sh38-2 "Karat";
** '''9А33-1Т''' TELAR or "Combat Vehicle", based on the original BAZ-5937 (or the new MZKT-69222) and equipped with a new day/night camera system OES-1T instead of the original day-only 9Sh33 or 9Sh38-2 "Karat";
** the 9M33M2 or -3 SAMs, or the new '''9M33M3-1''' with a range of 20&nbsp;km;
** 9M33M2 or M3 SAMs, or the new '''9M33M3-1''' with a range of 20&amp;nbsp;km;
** the 9Т217-1T Transportation and Loading Vehicle (TLV);
** 9Т217-1T Transportation and Loading Vehicle (TLV);
** the 9V210-1T Maintenance Vehicle (MV);
** 9V210-1T Maintenance Vehicle (MV);
** the 9V214-1T Alignment Vehicle (AV);
** 9V214-1T Alignment Vehicle (AV);
** the 9V242-1T Automatic Mobile Check-up and Testing Station (AKIPS) and
** 9V242-1T Automatic Mobile Check-up and Testing Station (AKIPS) and
** the 9F16M2 Ground Equipment Kit (GEK).<ref>{{cite web|url=http://www.tetraedr.com/en/production/production_war/detail.php?ID=10|title=933-1 SA-1 Short Range Air Defence System|access-date=14 November 2014|archive-url=https://web.archive.org/web/20141126145745/http://www.tetraedr.com/en/production/production_war/detail.php?ID=10|archive-date=26 November 2014|url-status=live}}</ref><ref>{{Cite web |url=http://www.tetraedr.com/mupload/iblock/d52/d521887e3fe536d84c3440378450e0c0.pdf |title=Archived copy |access-date=25 August 2012 |archive-url=https://web.archive.org/web/20141126145511/http://www.tetraedr.com/mupload/iblock/d52/d521887e3fe536d84c3440378450e0c0.pdf |archive-date=26 November 2014 |url-status=live }}</ref><ref>{{Cite web |url=http://www.tetraedr.com/mupload/iblock/588/58800b30e603bcc2b990aa5091daa7a5.pdf |title=Archived copy |access-date=25 August 2012 |archive-url=https://web.archive.org/web/20141126145627/http://www.tetraedr.com/mupload/iblock/588/58800b30e603bcc2b990aa5091daa7a5.pdf |archive-date=26 November 2014 |url-status=live }}</ref>
** 9F16M2 Ground Equipment Kit (GEK).&lt;ref&gt;{{cite web|url=http://www.tetraedr.com/en/production/production_war/detail.php?ID=10|title=933-1 SA-1 Short Range Air Defence System|access-date=14 November 2014|archive-url=https://web.archive.org/web/20141126145745/http://www.tetraedr.com/en/production/production_war/detail.php?ID=10|archive-date=26 November 2014|url-status=live}}&lt;/ref&gt;&lt;ref&gt;{{Cite web |url=http://www.tetraedr.com/mupload/iblock/d52/d521887e3fe536d84c3440378450e0c0.pdf |title=Tetraedr reveals three contracts for Osa-1T |website=Janes |date=January 2009 |last=Gyürösi |first=Miroslav |access-date=25 August 2012 |archive-url=https://web.archive.org/web/20141126145511/http://www.tetraedr.com/mupload/iblock/d52/d521887e3fe536d84c3440378450e0c0.pdf |archive-date=26 November 2014 |url-status=live }}&lt;/ref&gt;&lt;ref&gt;{{Cite web |url=http://www.tetraedr.com/mupload/iblock/588/58800b30e603bcc2b990aa5091daa7a5.pdf |title=Osa-1T upgrade boosts combat capability |website=Janes |date=February 2006 |last=Gyürösi |first=Miroslav |access-date=25 August 2012 |archive-url=https://web.archive.org/web/20141126145627/http://www.tetraedr.com/mupload/iblock/588/58800b30e603bcc2b990aa5091daa7a5.pdf |archive-date=26 November 2014 |url-status=live }}&lt;/ref&gt;
* The '''T38 "Stilet"''' is a further development of the Osa-1T. Main components are the TELAR '''T381''' on [[MZKT-69222]] chassis and the new missile '''T382'''. Maximum range of targets' destruction 20&nbsp;km, minimal RCS of targets detected 0.02 m<sup>2</sup>.<ref>{{cite web|url=http://www.tetraedr.com/en/production/production_war/detail.php?ID=11|title=T38 STILET Short Range Air Defence System|access-date=14 November 2014|archive-url=https://web.archive.org/web/20141126145359/http://www.tetraedr.com/en/production/production_war/detail.php?ID=11|archive-date=26 November 2014|url-status=live}}</ref>
* '''T38 "Stilet"''' is a further development of Osa-1T. Main components are the '''T381''' TELAR on [[MZKT-69222]] chassis and the new '''T382''' missile. Maximum range of targets' destruction 20&amp;nbsp;km, minimal RCS of targets detected 0.02 m&lt;sup&gt;2&lt;/sup&gt;.&lt;ref&gt;{{cite web|url=http://www.tetraedr.com/en/production/production_war/detail.php?ID=11|title=T38 STILET Short Range Air Defence System|access-date=14 November 2014|archive-url=https://web.archive.org/web/20141126145359/http://www.tetraedr.com/en/production/production_war/detail.php?ID=11|archive-date=26 November 2014|url-status=live}}&lt;/ref&gt;


===Poland===
===Poland===
* '''Osa-AKM-P1 "Żądło"''' (export name '''SA-8P Sting''') is a Polish upgrade of the 9K33M2 "Osa-AK" and 9K33M3 "Osa-AKM". Probably 32 of the 64 systems purchased from the Soviet Union will be upgraded to keep them in service until 2017. An upgraded TELAR '''9A33BM3-P1''' was displayed at the MSPO 2004 exhibition in Kielce, Poland. The upgraded vehicle is fitted with a passive detection and identification system SIC 12/TA as well as the ISZ-01 IFF system.<ref name="articles.janes.com">{{cite web|url=http://articles.janes.com/articles/Janes-Missiles-And-Rockets-2004/Poland-gives-the-SA-8-a-sharper-sting.html|title=Defense & Security Intelligence & Analysis: IHS Jane's – IHS|access-date=14 November 2014|archive-url=https://archive.today/20130126201634/http://articles.janes.com/articles/Janes-Missiles-And-Rockets-2004/Poland-gives-the-SA-8-a-sharper-sting.html|archive-date=26 January 2013|url-status=live}}</ref><ref>{{cite web|url=http://articles.janes.com/articles/Janes-Land-Based-Air-Defence/9K33-OSA-AK-Polish-Upgrade-Programme-Poland.html|title=Defense & Security Intelligence & Analysis: IHS Jane's – IHS|access-date=14 November 2014|archive-url=https://archive.today/20130126164503/http://articles.janes.com/articles/Janes-Land-Based-Air-Defence/9K33-OSA-AK-Polish-Upgrade-Programme-Poland.html|archive-date=26 January 2013|url-status=live}}</ref>
* '''Osa-AKM-P1 "Żądło"''' (export name '''SA-8P Sting''') is a Polish upgrade of 9K33M2 "Osa-AK" and 9K33M3 "Osa-AKM". Probably 32 of the 64 systems purchased from the Soviet Union have been upgraded. An upgraded '''9A33BM3-P1''' TELAR was displayed at the MSPO 2004 exhibition in Kielce, Poland. The upgraded vehicle is fitted with the SIC 12/TA  passive detection and identification system as well as the ISZ-01 IFF system.&lt;ref name="articles.janes.com"&gt;{{cite web|url=http://articles.janes.com/articles/Janes-Missiles-And-Rockets-2004/Poland-gives-the-SA-8-a-sharper-sting.html|title=Defense &amp; Security Intelligence &amp; Analysis: IHS Jane's – IHS|access-date=14 November 2014|archive-url=https://archive.today/20130126201634/http://articles.janes.com/articles/Janes-Missiles-And-Rockets-2004/Poland-gives-the-SA-8-a-sharper-sting.html|archive-date=26 January 2013|url-status=live}}&lt;/ref&gt;&lt;ref&gt;{{cite web|url=http://articles.janes.com/articles/Janes-Land-Based-Air-Defence/9K33-OSA-AK-Polish-Upgrade-Programme-Poland.html|title=Defense &amp; Security Intelligence &amp; Analysis: IHS Jane's – IHS|access-date=14 November 2014|archive-url=https://archive.today/20130126164503/http://articles.janes.com/articles/Janes-Land-Based-Air-Defence/9K33-OSA-AK-Polish-Upgrade-Programme-Poland.html|archive-date=26 January 2013|url-status=live}}&lt;/ref&gt;
In 2019 Poland started modification of the whole environment of the Osa system. Those works has been commissioned to WZU Grudziądz. The total cost is about €40-50 million.<ref>{{Cite web|url=https://ted.europa.eu/udl?uri=TED:NOTICE:153124-2019:TEXT:PL:HTML&src=0|title=Usługi - 153124-2019 - TED Tenders Electronic Daily|website=ted.europa.eu|access-date=4 January 2021}}</ref><ref>{{Cite web|url=https://ted.europa.eu/udl?uri=TED:NOTICE:158283-2019:TEXT:PL:HTML&src=0|title=Usługi - 158283-2019 - TED Tenders Electronic Daily|website=ted.europa.eu|access-date=4 January 2021}}</ref><ref>{{Cite web|url=https://ted.europa.eu/udl?uri=TED:NOTICE:155907-2019:TEXT:PL:HTML&src=0|title=Usługi - 155907-2019 - TED Tenders Electronic Daily|website=ted.europa.eu|access-date=4 January 2021}}</ref><ref>{{Cite web|url=https://ted.europa.eu/TED/notice/udl?uri=TED:NOTICE:172966-2018:TEXT:PL:HTML|title=Usługi - 172966-2018 - TED Tenders Electronic Daily|website=ted.europa.eu|access-date=4 January 2021}}</ref>
In 2019, Poland began modification of the whole environment of the Osa system. Those works has been commissioned to WZU Grudziądz. The total cost is about €40-50 million.&lt;ref&gt;{{Cite web|url=https://ted.europa.eu/udl?uri=TED:NOTICE:153124-2019:TEXT:PL:HTML&amp;src=0|title=Usługi - 153124-2019 - TED Tenders Electronic Daily|website=ted.europa.eu|access-date=4 January 2021}}&lt;/ref&gt;&lt;ref&gt;{{Cite web|url=https://ted.europa.eu/udl?uri=TED:NOTICE:158283-2019:TEXT:PL:HTML&amp;src=0|title=Usługi - 158283-2019 - TED Tenders Electronic Daily|website=ted.europa.eu|access-date=4 January 2021}}&lt;/ref&gt;&lt;ref&gt;{{Cite web|url=https://ted.europa.eu/udl?uri=TED:NOTICE:155907-2019:TEXT:PL:HTML&amp;src=0|title=Usługi - 155907-2019 - TED Tenders Electronic Daily|website=ted.europa.eu|access-date=4 January 2021}}&lt;/ref&gt;&lt;ref&gt;{{Cite web|url=https://ted.europa.eu/TED/notice/udl?uri=TED:NOTICE:172966-2018:TEXT:PL:HTML|title=Usługi - 172966-2018 - TED Tenders Electronic Daily|website=ted.europa.eu|access-date=4 January 2021}}&lt;/ref&gt;
 
===Ukraine===
 
* '''Osa-AKM "FrankenSAM"''' is a 2024 Ukrainian upgrade funded by the Come Back Alive Foundation, which invested over 14 million [[hryvnias]] (around US$336,000) to upgrade an undisclosed number of Osa-AKM systems. This upgrade allows the R-73 air-to-air missile to be mounted and launched, in addition to the original 9M33 missile series.&lt;ref name="Newdick" /&gt;


==Operators==
==Operators==
[[File:9K33 operators.png|thumb|300px|Map of 9K33 operators in blue with former operators in red]]
[[File:9K33 Osa Operator Map 25.10.2023.png|thumb|upright=1.35|Operators {{legend|#0360d5|Current}}{{legend|#dd001e|Former}}]]
[[File:B8fnRA7c8Go.jpg|thumb|Armenian 9K33 Osa missile during a military parade in Yerevan]]
[[File:B8fnRA7c8Go.jpg|thumb|Armenian 9K33 Osa missiles during a military parade in Yerevan]]
[[File:Romanian SA-8.jpg|thumb|right|Romanian 9K33 Osa missile launch at Capu Midia firing range.]]
[[File:Romanian SA-8.jpg|thumb|right|Romanian 9K33 Osa missile launch at the [[Capu Midia Training Range|Capu Midia]] firing range.]]


===Current operators===
===Current operators===
* {{ALG}} – 28/48<ref>{{cite web|url=http://waronline.org/mideast/algir.htm#airdefense|title=Âîîðóæåííûå ñèëû Àëæèðà|website=waronline.org|url-status=dead|archive-url=https://web.archive.org/web/20140328191754/http://waronline.org/mideast/algir.htm#airdefense|archive-date=28 March 2014|df=dmy-all}}</ref> 48+<ref>The Military Balance 2010. — P. 245.
* {{ANG}} – 15 as of 2024{{sfn|IISS|2024|page=472}}
+The Military Balance 2012. — P. 317.</ref>
* {{ARM}}{{sfn|IISS|2024|page=179}}
* {{ANG}} – 15 units.<ref name=IISS>{{cite book |last=[[International Institute for Strategic Studies]]|date=2021|title=The Military Balance|page=449|isbn=9781032012278}}</ref> One complete unit was captured by South African forces in southern Angola in 1982<ref>{{Cite web|title=SA-8 (Gecko) / 9K33 OSA 6x6 Wheeled Self-Propelled SAM Vehicle|url=https://www.militaryfactory.com/armor/detail.asp?armor_id=60|access-date=2021-01-04|website=www.militaryfactory.com|language=en-US}}</ref>
* {{AZE}} – Upgraded to the Osa-1T standard{{sfn|IISS|2024|page=180}}
* {{ARM}}
* {{BLR}}{{sfn|IISS|2024|page=183}}
* {{AZE}} – Upgraded to Osa-1T<ref>{{cite web|url=http://articles.janes.com/articles/Janes-Missiles-And-Rockets-2009/Azerbaijan-Osa-AKMs-upgraded-by-Belarus.html|title=Defense & Security Intelligence & Analysis: IHS Jane's – IHS|access-date=14 November 2014|archive-url=https://archive.today/20130127011555/http://articles.janes.com/articles/Janes-Missiles-And-Rockets-2009/Azerbaijan-Osa-AKMs-upgraded-by-Belarus.html|archive-date=27 January 2013|url-status=live}}</ref>
* {{BGR}} − 24 as of 2024{{sfn|IISS|2024|page=77}}
* {{BLR}}
* {{CUB}}{{sfn|IISS|2024|page=428}}
* {{BGR}} – 24 missile launch units
* {{DEU}} – unknown number retained from East German stocks for [[OPFOR]] training&lt;ref&gt;{{cite web |title=Flugabwehrraketensystem SA-|url=https://www.bundeswehr.de/de/organisation/luftwaffe/aktuelles/ace21-sa-8-5090030/ |website=bundeswehr.de |access-date=28 June 2025}}&lt;/ref&gt;
* {{CUB}}
* {{ECU}} − 10 as of 2024, operated by the Air Force{{sfn|IISS|2024|page=432}}
* {{ECU}}
* {{GEO}} − 8 Osa-AK and Osa-AKM as of 2024{{sfn|IISS|2024|page=185}}
* {{GEO}}
* {{GRE}} – 38 Osa-M as of 2024{{sfn|IISS|2024|page=100}} Being transferred to Armenia&lt;ref&gt;{{cite web |last1=Saballa |first1=Joe |title=Greece Picks Armenia Over Ukraine to Receive Obsolete Air Defense Systems |url=https://thedefensepost.com/2024/11/27/greece-armenia-ukraine-weapons/ |website=thedefensepost.com |publisher=The Defence Post |access-date=28 November 2024}}&lt;/ref&gt;
* {{GRE}} – 30 systems, 120 cvs in 6 batteries
* {{IND}} – 50+ Osa-AKM as of 2024{{sfn|IISS|2024|page=267}}
* {{flagicon image|InfoboxHez.PNG}} [[Hezbollah]]<ref>{{cite web|url=http://www.jpost.com/Defense/Hezbollah-has-long-range-surface-to-air-missiles|title=Hezbollah has long-range surface-to-air missiles|access-date=5 September 2015|archive-url=https://web.archive.org/web/20150911082222/http://www.jpost.com/Defense/Hezbollah-has-long-range-surface-to-air-missiles|archive-date=11 September 2015|url-status=live}}</ref>
[[File:The OSA-AK Weapons System passes through the Rajpath during the 60th Republic Day Parade-2009, in New Delhi on January 26, 2009.jpg|thumb|Indian 9K33 Osa missile system in Delhi during a military parade]]
* {{PRK}}
* {{POL}} − 64 as of 2024.{{sfn|IISS|2024|page=125}} Modernized to the Osa-AKM-P1 standard&lt;ref&gt;{{cite news |last1=Sabak |first1=Julius |title=Ukraina: Polskie systemy rakietowe postrachem dronów Shahed-136 [KOMENTARZ] |url=https://defence24.pl/wojna-na-ukrainie-raport-specjalny-defence24/ukraina-polskie-systemy-rakietowe-postrachem-dronow-shahed-136-komentarz |access-date=14 July 2024 |work=defence24.pl |date=12 October 2022 |language=pl}}&lt;/ref&gt;
* {{MOR}}
* {{ROM}} – 16 as of 2024{{sfn|IISS|2024|page=131}}
* {{IND}} - Upgraded OSA-AK in Service
* {{RUS}} – 390 Osa-AKM used by the Ground Forces and 20 by the Naval Infantry as of 2024{{sfn|IISS|2024|pages=193,199}}
[[File:The OSA-AK Weapons System passes through the Rajpath during the 60th Republic Day Parade-2009, in New Delhi on January 26, 2009.jpg|thumb|Indian 9K33 Osa Missile System in Delhi during a Military Parade]]
* {{SUD}}{{sfn|IISS|2024|page=521}}
* {{IRN}}
* {{SYR}}{{sfn|IISS|2024|page=386}}
* {{JOR}} – 48 upgraded
* {{TKM}} – 40 as of 2024{{sfn|IISS|2024|page=209}}
* {{LBY}} – 20
* {{UKR}} – Estimated by the [[IISS]] to have 65 OSA-AKM in 2024.{{sfn|IISS|2024|page=212}} Received an unknown number of systems from Poland during the [[Russian invasion of Ukraine]]&lt;ref&gt;{{cite news |last1=Newdick |first1=Thomas |last2=Rogoway |first2=Tyler |title=What Could Happen If Ukraine's Stock Of Soviet SAMs Runs Dry |url=https://www.twz.com/what-could-happen-if-ukraines-stocks-of-soviet-sams-runs-dry |access-date=14 July 2024 |work=The War Zone |date=19 April 2023}}&lt;/ref&gt;
* {{POL}} – 64. Probably 32 systems will be upgraded to Osa-AKM-P1 to keep them in service until 2017.<ref name="articles.janes.com"/>
* {{ROM}} – 16 launchers and 8 reloaders (one regiment in service since 1989)
* {{RUS}} – 400<ref>{{cite web|url=http://www.newsland.ru/news/detail/id/763006/|title=Старые комплексы ЗРК "Оса" все еще эффективны|access-date=14 November 2014|archive-url=https://web.archive.org/web/20110831215303/http://www.newsland.ru/news/detail/id/763006/|archive-date=31 August 2011|url-status=live}}</ref> Since 2007 the Osa-AKM system has modernized and fitted with protection against spoofing<ref>{{cite web|url=http://nvo.ng.ru/armament/2007-12-14/4_kupol.html|title="Купол" защищает поле боя|access-date=14 November 2014|archive-url=https://web.archive.org/web/20141125023932/http://nvo.ng.ru/armament/2007-12-14/4_kupol.html|archive-date=25 November 2014|url-status=live}}</ref>
* {{SADR}}<ref>{{cite book|language = es|author1 = Ignacio Fuente Cobo|author2 = Fernando M. Mariño Menéndez|title = El conflicto del Sahara occidental|url = https://e-archivo.uc3m.es/bitstream/handle/10016/17377/04_conflictos_saharaoccidental_2006.pdf|isbn = 978-84-9781-253-5|publisher= [[Ministerio de Defensa (España)|Ministerio de Defensa de España]] & [[Charles III University of Madrid|Universidad Carlos III de Madrid]]|year= 2006|id = Fuente & Mariño|page = 117}}</ref>
* {{SYR}} – 14 batteries, composed of 60 independent and autonomous fighting vehicles<ref>{{cite web|date=26 November 2012|title=ПВО Сирии: спасение или иллюзия|url=http://www.oborona.ru/includes/periodics/geopolitics/2012/1008/17389386/detail.shtml|url-status=live|archive-url=https://web.archive.org/web/20141016224715/http://www.oborona.ru/includes/periodics/geopolitics/2012/1008/17389386/detail.shtml|archive-date=16 October 2014|access-date=14 November 2014|language=ru}}</ref><ref>{{cite web|url=http://night-panther.com/military_themes/military_equipment/vooruzhennyie-silyi-sirii/|title=night-panther " Вооруженные силы Сирии|access-date=14 November 2014|archive-url=https://web.archive.org/web/20141109164955/http://night-panther.com/military_themes/military_equipment/vooruzhennyie-silyi-sirii/|archive-date=9 November 2014|url-status=live}}</ref>
* {{TKM}} – 40<ref>{{cite web|url=http://www.globalsecurity.org/military/world/centralasia/turkmen-army-equipment.htm|title=Turkmensitan Army Equipment|author=John Pike|website=globalsecurity.org|access-date=31 August 2007|archive-url=https://web.archive.org/web/20150429232138/http://www.globalsecurity.org/military/world/centralasia/turkmen-army-equipment.htm|archive-date=29 April 2015|url-status=live}}</ref>
* {{UKR}} – 9K33M2 Osa-AK is in service.


===Former operators===
===Former operators===
* {{CZS}} – One regiment which passed to the Czech Republic.
* {{ALG}}{{sfn|O'Halloran|Foss|2002|page=145}}
* {{CZE}} – Phased out in 2006.
* {{flag|Artsakh}} − Seized by Azerbaijan after the [[2023 Nagorno-Karabakh clashes]]&lt;ref&gt;{{cite news |title=Armenian separatists start surrendering weapons in Karabakh |url=https://mil.in.ua/en/news/armenian-separatists-start-surrendering-weapons-in-karabakh/ |access-date=28 September 2023 |work=Militarnyi}}&lt;/ref&gt;
* {{DDR}} – 41 Osa-AK. Partially sold to Greece after the [[German reunification]].
* {{CRO}}{{sfn|O'Halloran|Foss|2002|page=145}}
* {{Flag|Iraq|1991}} – 50 systems delivered from the Soviet Union between 1982 and 1985.<ref>{{Cite web|title=SIPRI Arms Transfers Database to Iraq, 1970-2004|url=https://web.archive.org/web/*/http://www.sipri.org/contents/armstrad/atirq_data.html|access-date=2021-01-04}}</ref> As well as captured Kuwaiti units.
* {{CZS}} – 40 in 1992.{{sfn|Cullen|Foss|1992|page=134}} Passed on to the Czech Republic{{sfn|O'Halloran|Foss|2002|page=145}}
* {{KWT}} – Captured by the Iraqi forces in the [[Gulf War|Persian Gulf War]].
* {{CZE}}{{sfn|O'Halloran|Foss|2002|page=145}}
* {{USSR}} – Passed on to successor states.
* {{DDR}} – 41 received from the Soviet Union between 1981 and 1985. 12 sold to Greece after the [[German reunification]].&lt;ref&gt;{{cite web |title=Arms transfer database |url=https://armstransfers.sipri.org/ArmsTransfer/TransferRegister |website=SIPRI |publisher=Stockholm International Peace Research Institute |access-date=14 July 2024}}&lt;/ref&gt;
* {{flag|Iraq|1991}} – 50 systems delivered from the Soviet Union between 1982 and 1985.&lt;ref&gt;{{Cite web|title=SIPRI Arms Transfers Database to Iraq, 1970-2004|url=http://www.sipri.org/contents/armstrad/atirq_data.html|access-date=2021-01-04|archive-date=12 May 2007|archive-url=https://web.archive.org/web/20070512001146/http://www.sipri.org/contents/armstrad/atirq_data.html}}&lt;/ref&gt; As well as captured Kuwaiti units.
* {{JOR}} – retired in 2017, 52 offered for sale.&lt;ref&gt;{{cite web |last1=Najib |first1=Mohammed |title=Jordan to sell Osa SAMs |url=http://www.janes.com/article/75246/jordan-to-sell-osa-sams |website=Jane's |date=27 October 2017|archive-url=https://web.archive.org/web/20171104074342/http://www.janes.com/article/75246/jordan-to-sell-osa-sams |archive-date=4 November 2017 }}&lt;/ref&gt; 35 Osa-AKs sold to Armenia before 2020.&lt;ref&gt;{{cite web |last1=Mitzer |first1=Stijn |last2=Oliemans |first2=Joost |title=Armenia's Last Deterrent: The Buk-M1-2 SAM System |url=https://www.oryxspioenkop.com/2021/10/armenias-last-deterrent-buk-m1-2.html |website=Oryx Blog |date=2 October 2021}}&lt;/ref&gt;
* {{KWT}} – Purchased in the late 1980s.&lt;ref&gt;{{cite web |last1=Mitzer |first1=Stijn |last2=Oliemans |first2=Joost |title=The Forgotten Deterrent: Kuwait's Luna-M 'FROG-7' Artillery Rockets |url=https://www.oryxspioenkop.com/2020/03/kuwaits-little-known-9k52-luna-m-frog-7.html |website=Oryx Blog |date=22 December 2020}}&lt;/ref&gt; Captured by the Iraqi forces in the [[Gulf War]].
* {{flag|Libya|1977}} – 40 used by the Army and 50 by the Air Defense Command in 1992,{{sfn|Cullen|Foss|1992|page=134}} unknown number operational prior to the [[First Libyan Civil War]].&lt;ref&gt;{{cite book |last1=Institute for Strategic Studies |title=The military balance, 2011 |date=4 March 2011 |publisher=Routledge |location=London |isbn=978-1-85743-606-8 |page=321 |author1-link=Institute for Strategic Studies }}&lt;/ref&gt;
* {{flag|Serbia and Montenegro}}{{sfn|O'Halloran|Foss|2002|page=145}}
* {{SAF}} − Captured from Angola. Used for training{{sfn|O'Halloran|Foss|2002|page=143}}
* {{USSR}} – 1000+ in 1991.{{sfn|Cullen|Foss|1992|page=134}} Passed on to successor states.
* {{YUG}} − 20 in 1992.{{sfn|Cullen|Foss|1992|page=134}} Passed on to successor states{{sfn|O'Halloran|Foss|2002|page=145}}


==References==
==References==
* [http://www.fas.org/man/dod-101/sys/missile/row/sa-8.htm Federation of American Scientists page]{{dead link|date=December 2021}}
{{Reflist}}
* [http://www.astronautix.com/lvs/osa.htm Astronautix.com]{{dead link|date=December 2021}}
 
* [http://www.rusarm.ru/cataloque/air_def/air_def.pdf ROSOBORONEXPORT]{{dead link|date=December 2021}}
===Bibliography===
* {{cite book |editor1-last=Cullen |editor1-first=Tony |editor2-last=Foss |editor2-first=Christopher F. |title=Jane's Land-Based Air Defence: 1992-93 |date=1992 |publisher=Jane's Information Group |location=Surrey |isbn=978-0-7106-0979-3 |edition=5th |url=https://ftp.idu.ac.id/wp-content/uploads/ebook/tdg/ADNVANCED%20MILITARY%20PLATFORM%20DESIGN/Janes%20Land-Based%20Air%20Defence%201992-93%20by%20Tony%20Cullen,%20Christopher%20F.%20Foss%20(z-lib.org).pdf |access-date=14 July 2024 |language=en}}
* [http://www.fas.org/man/dod-101/sys/missile/row/sa-8.htm Federation of American Scientists page] {{Webarchive|url=https://web.archive.org/web/20130219014816/http://www.fas.org/man/dod-101/sys/missile/row/sa-8.htm |date=19 February 2013 }}
* {{cite book |last1=International Institute for Strategic Studies |title=The Military Balance 2024 |date=2024 |publisher=Taylor &amp; Francis |isbn=978-1-040-05115-3 |url=https://books.google.com/books?id=zIb0EAAAQBAJ |language=en |ref={{SfnRef|IISS|2024}}}}
* [http://www.astronautix.com/lvs/osa.htm Astronautix.com] {{Webarchive|url=https://web.archive.org/web/20050212225747/http://astronautix.com/lvs/osa.htm |date=12 February 2005 }}
* {{cite book |editor1-last=O'Halloran |editor1-first=James C. |editor2-last=Foss |editor2-first=Christopher F. |editor2-link=Christopher F Foss |title=Jane's Land-Based Air Defense 2002-2003 |date=2002 |publisher=Janes Information Group |isbn=978-0-7106-2437-6 |edition=15th}}
*{{cite book |last1=Williams |first1=Ian |title=Putin's Missile War: Russia's Strike Campaign in Ukraine |date=2023 |publisher=Rowman &amp; Littlefield |isbn=978-1-5381-7067-0 |url=https://books.google.com/books?id=P3fREAAAQBAJ |language=en}}
* [http://www.rusarm.ru/cataloque/air_def/air_def.pdf Air Defence Systems – Export Catalogue] {{Webarchive|url=https://web.archive.org/web/20110928213825/http://www.rusarm.ru/cataloque/air_def/air_def.pdf |date=28 September 2011 }}


==External links==
==External links==
* [https://web.archive.org/web/20071227053132/http://www.thetankmaster.com/ENGLISH/AFV/OSA.asp AIR-DEFENCE MISSILE LAUNCHER 9K33 "OSA"( 9A33 -CARRIER, 9M33 – MISSILES)(SA-8 GECKO) – Walk around photos]
{{Commons category}}
* [http://www.armyrecognition.com/russia_russian_missile_system_vehicle_uk/sa-8_gecko_9k33_osa_ground-to-air_missile_system_technical_data_sheet_specifications_information_uk.html SA-8 Gecko 9K33 OSA Ground-to-air missile system]
* [https://web.archive.org/web/20071227053132/http://www.thetankmaster.com/ENGLISH/AFV/OSA.asp Air-Defence Missile Launcher 9K33 "OSA" (9A33 – Carrier, 9M33 – Missiles) (SA-8 Gecko) – Walk around photos]
* [http://sites.google.com/site/samsimulator1972/home 9K33M2 OSA-AK (SA-8B Gecko) Simulator]
* [http://sites.google.com/site/samsimulator1972/home 9K33M2 OSA-AK (SA-8B Gecko) Simulator]
 
{{Russian SAM systems}}{{PostWWIISovietAFVS}}
==Notes==
{{Commons category}}
{{Reflist}}
 
{{PostWWIISovietAFVS}}
{{Russian and Soviet missiles|SAM}}
{{Russian and Soviet missiles|SAM}}
{{Authority control}}
{{Authority control}}
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[[Category:Cold War surface-to-air missiles of the Soviet Union]]
[[Category:Cold War surface-to-air missiles of the Soviet Union]]
[[Category:Self-propelled anti-aircraft weapons of the Soviet Union]]
[[Category:Self-propelled anti-aircraft weapons of the Soviet Union]]
[[Category:Self-propelled anti-aircraft weapons of Russia]]
[[Category:Self-propelled anti-aircraft weapons]]
[[Category:Self-propelled anti-aircraft weapons]]
[[Category:Surface-to-air missiles of the Soviet Union|9K33]]
[[Category:Surface-to-air missiles of the Soviet Union|9K33]]
[[Category:Surface-to-air missiles of Russia|9K33]]
[[Category:Military vehicles introduced in the 1970s]]
[[Category:Military vehicles introduced in the 1970s]]

Revision as of 08:05, 7 February 2026


9K33 Osa <br /><small>(NATO reporting name: SA-8 Gecko, SA-N-4 Gecko)</small>
9A33BM3 transporter-launcher and radar vehicle of the upgraded 9K33M3 Osa-AKM.
Type6×6 amphibious SAM system <!-- Type selection -->
Place of originSoviet Union
Service history
In service1971–present
Used bySee list of present and former operator
Wars
  • Iran–Iraq War
  • 1982 Lebanon War
  • Angolan Civil War
  • Western Sahara War
  • Gulf War
  • Russo-Georgian War
  • First Libyan Civil War
  • Syrian Civil War
  • 2020 Armenian–Azerbaijani skirmishes<ref>"Orbiter-3 downed in Artsakh hit with OSA AKM modernized in Armenia". lragir.am. Retrieved 22 July 2020.</ref>
  • Second Nagorno-Karabakh War
  • Russo-Ukrainian War[1]

2025 India-Pakistan conflict

<!-- Production history -->
Production history
DesignerNII-20 Research Institute
Designed1960–1972
ManufacturerZnamya Truda Plant
Produced1970–1988<ref>"Прочие с долевым участием". www.kupol.ru. Archived from the original on 6 December 2011. Retrieved 28 March 2012.</ref>
No. built1,200<ref>"Зенитный ракетный комплекс "Оса"". Archived from the original on 24 May 2013. Retrieved 28 March 2012.</ref>
VariantsOSA-A, OSA-AK, OSA-AKM, OSA-M <!-- General specifications -->
Specifications (OSA-AKM)
Mass17.5 tonnes
Length9.14 m (30 ft 0 in)
Width2.75 m (9 ft 0 in)
Height4.20 m (13 ft 9 in) (radar mast stowed)
Crew5 soldiers <!-- Vehicle/missile specifications -->

Main
armament
6 9M33, 9M33M1, 9M33M2 or 9M33M3 missiles
EngineD20K300 diesel
Ground clearance400 mm (16 in)
Operational
range
500 km (311 mi)[2]
Maximum speed 80 km/h (50 mph)<br /> 8 km/h (5.0 mph) (swimming)

The 9K33 Osa (Script error: The function "langx" does not exist.; English: "wasp"; NATO reporting name SA-8 Gecko) is a highly mobile, low-altitude, short-range tactical surface-to-air missile system developed in the Soviet Union in the 1960s and fielded in 1972. Its export version name is Romb.<ref>"Designations of Soviet and Russian Military Aircraft and Missiles". Archived from the original on 11 October 2017. Retrieved 14 November 2014.</ref>

Description

Polish OSA-AKM.

The Osa was the first mobile air defense missile system incorporating its own engagement radars on a single vehicle.[citation needed]

All versions of the 9K33 feature all-in-one 9A33 transporter erector launcher and radar (TELAR) vehicles which can detect, track and engage aircraft independently or with the aid of regimental surveillance radars. The six-wheeled transport vehicles BAZ-5937 are fully amphibious and air transportable. The road range is about 500&nbsp;km.

The 1S51M3-2 radar system of the 9K33 Osa TELAR received the NATO codename Land Roll. It was derived from the naval 'Pop Group' radar system but is smaller as it does not require a stabilisation system. An improved system, the Osa-AKM (NATO reporting name SA-8B 'Gecko' Mod 1) was first seen in Germany in 1980. It had improvements to the launcher configuration, carrying six missiles in ribbed containers.

The system is reported to be of the frequency-agile monopulse type. It consists of an elliptical rotating surveillance antenna mounted on top of the array, operates in H band (6 to 8&nbsp;GHz) and has a 30&nbsp;km acquisition range against most targets. The large pulsed J band (14.5&nbsp;GHz) engagement antenna is mounted below it in the centre of the array and has a maximum tracking range of about 20&nbsp;km.

Mounted on either side of the tracking radar antenna is a small J band parabolic dish antenna to track the missile. Below it is a small circular antenna which emits an I band uplink capture beam to gather the missile shortly after launch. The final antennas in the array are two small white rectangular ones, one on either side of the array mounted alongside the I band, used for command uplink to the missile. The twin antenna system permits the 'Land Roll' radar to control up to two missiles simultaneously against a single target.

Two missiles can be guided on different frequencies to further complicate electronic countermeasures (ECM). The 9Sh33 electro optical tracker is fitted to and above the tracking radar, used to track the target when the main tracking radar is jammed by ECM.

A 9K33 battery comprises four 9A33B TELAR vehicles and two 9T217 transloader vehicles on BAZ-5939 chassis with reload missiles and a crane. A reload time of five minutes has been reported per TELAR.

In addition to the TELARs, each regiment is assigned a 9V914 radar collimation vehicle (initially on the BAZ-5938 chassis but more often found on the ZiL-131 truck) that assists in the alignment of the TELAR's radar systems, ensuring accurate target tracking and engagement.

Variants

SA-N-4 launcher covered by a circular plate on the Slava-class cruiser Marshal Ustinov.
  • 9K33 "Osa" (US DoD designation SA-8A "Gecko") began development in 1960 and was introduced in 1971–1972 with four exposed 9M33 missiles per 9A33B TELAR and maximum range of 12 km (7.5 mi).
  • 4K33 "OSA-M" (NATO reporting name SA-N-4 "Gecko") was introduced in 1972 and is the naval version of the system with two 9M33M missiles on a ZIF-122 retractable rotating launcher and improved performance. It has been installed on -class frigate, Kara-class guided missile cruisers, Kiev-class VTOL cruisers and also the Kirov, Slava and Krivak classes.
  • 9K33M2 "Osa-AK" (US DoD designation SA-8B "Gecko Mod-0") with 9A33BM2 TELAR was introduced in 1975 with the new six-missile box launcher, each 9M33M2 missile being a sealed round.
  • 9K33M3 "Osa-AKM" (US DoD designation SA-8B "Gecko Mod-1") with 9A33BM3 TELAR and 9M33M3 missiles was introduced in 1980 with the maximum range extended to 15 km (9.3 mi) and maximum altitude to 12&nbsp;km (40,000&nbsp;ft) as explained above. Most OSA-AKM systems also feature an IFF antenna.
  • Saman and Saman-M (Russian Саман – adobe) is a development of the Osa\Osa-M system into target drones, used for testing and training with air defense systems, including SAMs.

The 9K33M3 is also able[citation needed] to use wire-guided missiles, presumably for use in an ECM-heavy environment where radio command guidance may not operate properly.

Missiles

9M33
9M33M3 missile
TypeSurface-to-air missile <!-- Type selection -->
Place of originSoviet Union
Service history
In service1971–present
Used bySee list of present and former operator <!-- Production history -->
Production history
DesignerMKB "Fakel"
Designed1960–1972
ManufacturerZnamya Truda Plant
Produced1970–1988
Variants9M33, 9M33M1, 9M33M2, 9M33M3, 9A33BM3 <!-- General specifications -->
Specifications (9K33M3<ref name="fas">"9K33M3 Osa-AKM". Archived from the original on 19 February 2013. Retrieved 13 July 2008..</ref>)
Mass170 kg (370 lb)
Length3,158 mm (10 ft 4.3 in)
Diameter209.6 mm (8 in)
Crew<!-- Explosive specifications -->
WarheadFrag-HE
Warhead weight15 kg (33 lb)[3]
Detonation
mechanism
Contact and proximity
Blast yield<!-- Vehicle/missile specifications -->

PropellantSolid propellant rocket motor
Operational
range
15 kilometres (9.3 mi)
Flight altitude12,000 metres (39,000 ft)
Boost time2 s boost, then 15 s sustain
Maximum speed 1020 m/s (Mach 2.9)
Guidance
system
RF CLOS
Steering
system
dual-thrust rocket motor
Accuracy5 m
Launch
platform
9P35M2

Engagement range for early versions is approximately 2–9&nbsp;km (1.3–5.6 mi) with engagement altitudes of between 50 and 5,000 m (164–16,400&nbsp;ft). The 9M33M2 "Osa-A" missile extends the ranges to 1.5–10&nbsp;km (1–6.2 mi) and engagement altitudes to 25–5,000 m (82–16,400&nbsp;ft). The 9M33M3 missile greatly enhances the altitude engagement envelope to 10–12,000 m (33–42,500&nbsp;ft), and are able to travel further (about 15&nbsp;km/9 mi). However, the system is unable to engage targets at longer ranges, due to other factors such as the limitations of the radar tracking of the missiles. The system is designed for use primarily against jet aircraft and helicopters in any weather.

The 9M33 missiles are 3.158&nbsp;m (10.3&nbsp;ft) long, weigh 126&nbsp;kg (278&nbsp;lb) and use command guidance. A backup low-light optical tracking system is available for heavy ECM environments. The latest 9M33M3 missiles have an increased total weight of 170&nbsp;kg (375&nbsp;lb) in order to provide extended range coverage and larger warhead. Propulsion is provided by a dual-thrust solid fuel rocket motor. Both versions feature a missile speed of around Mach 2.4 (peaking at around Mach 3) for a maximum target engagement speed of around Mach 1.4 for the original 9M33 missile and Mach 1.6 for the 9M33M2\M3 missiles. The warhead for 9M33/M2 versions weighs 19&nbsp;kg (42 lb), increased to 40&nbsp;kg (88&nbsp;lb) in the M3 version to improve performance against helicopters. All versions have impact and proximity fuzes.

Each TELAR is able to launch and guide two missiles against one target simultaneously. Kill probability is quoted as 0.35–0.85 for the Osa and 0.55–0.85 for the Osa-AK and Osa-AKM (presumably depending upon target aspect, speed, maneuverability and radar cross section). Reaction time (from target detection to launch) is around 26 seconds. Preparation time for engagements from transit is around 4 minutes and missile reloading takes around 5 minutes. Each battery of four TELARs is usually accompanied by two reload vehicles carrying 18 missiles in sets of three, with a crane mounted on the reload vehicles to assist in moving the missiles.

When launched, the booster motor burns for two seconds, permitting the radar to gather and control it at very short ranges (about 1.6&nbsp;km). The sustainer motor burns for 15 seconds, bringing the missile to a top speed of about Mach 2. Once launched, the missile is command-guided for the whole flight, and the warhead is detonated by its proximity fuze or possibly command. The warhead is said to have a lethal radius of 5 m at low altitude against an F-4 Phantom II size target. [citation needed]

Radars

P-40 'Long Track' radar set
  • 1S51M3 ("Land Roll") – C band target acquisition radar, H band conical scan target tracking radar and two J band pulse mode fire control radars (range 35&nbsp;km/22 mi for acquisition, 30&nbsp;km/19 mi for tracking and 25&nbsp;km/16 mi for guidance). Mounted on the TELAR.
  • P-40 ("Long Track") – E band early warning radar (also used by 2K11 Krug and 2K12 Kub, range 175&nbsp;km/108 mi), mounted on a tracked vehicle (a modified AT-T).
  • P-15 ("Flat Face A") or P-19 ("Flat Face B") or P-15M(2) ("Squat Eye") – 380&nbsp;kW C band target acquisition radar (also used by the S-125 Neva/Pechora and 2K12 Kub, range 250&nbsp;km/155 mi), mounted on a ZiL-131 truck.
  • PRV-9 or PRV-16 ("Thin Skin") – E band height finding radar (also used by 2K11 Krug and 2K12 Kub, range 240&nbsp;km/148 mi), mounted on a KrAZ-255B truck.

Deployment and operational history

Produced by the Soviet Union/Russia, the system was exported to many countries, including Cuba, Greece (from the former East Germany), Poland, Syria, Ecuador and Iraq.

During the 1982 Lebanon war in which Syrian air defenses were obliterated by a massive air campaign against Syrian SAM sites in the Beqaa valley, the Syrians deployed Osas. An F-4 Phantom in a SEAD mission was shot down on 24 July 1982 by an Osa system. The WSO (back seater), Aharon Katz was killed, while the pilot, Gil Fogel, survived and was held captive by the Syrians for two years.<ref>McCarthy, Don (14 November 2013). The Sword of David: The Israeli Air Force at War. Pen and Sword. ISBN 978-1-78159-290-8.</ref>

In the late 1980s, Cuba deployed several 9K33 Osa units in southern Angola, which posed a significant threat to South African air superiority at shorter ranges.<ref>George, Edward in: The Cuban Intervention in Angola, 1965–1991, Frank Cass, London, New York, 2005, ISBN 0-415-35015-8, p. 236-237</ref> The South African 61 Mechanised Battalion Group captured an intact 9K33 Osa anti-aircraft missile system on 3 October 1987 during the Battle of Cuito Cuanavale. This was the first time that such a system had fallen into possession of non-Warsaw Pact forces, giving Western intelligence agencies an opportunity to examine an important Soviet-bloc weapon system.<ref>Turton, A.R. 2010. Shaking Hands with Billy. Durban: Just Done Publications.</ref>

Iraq fielded Osa systems during the 1991 Gulf War. The Soviets claimed that it was the most effective system alongside the ZSU-23-4 Shilka at shooting down Tomahawk cruise missiles, with several downings credited to hits from Osa weapons.[4]

The system also saw use in the 2008 Russo-Georgian War by both the Georgian and Russian militaries.

Libya deployed 9K33 Osa, with some destroyed during the 2011 Libyan Civil War by NATO airstrikes.<ref>"U.S. aviators rescued; Gadhafi remains defiant". CNN. 24 August 2011. Archived from the original on 24 March 2011. Retrieved 22 March 2011.</ref>

Syrian Civil War

In October 2012, fighters from insurgent faction Liwa al-Islam (renamed Jaish al-Islam the following year) captured three operational 9K33 Osa mobile SAMs in Damascus' Eastern Ghouta. In the following years, at least six missiles were launched at helicopters from the Syrian Arab Air Force flying over the area: on the 29th of July 2013, a Mi-8/17 was apparently destroyed; a second launch, whose result is unclear, occurred at an unknown date in the following months; on 16th of January 2014, a Mi-17 was shot down; two days later, another missile missed its intended target; an undated video released in March 2014 by Jaysh al-Islam showed a 9M33 missile exploding in the proximity of a Mi-8/17. In October and December 2015, the Russian Ministry of Defence claimed its forces had destroyed Osa systems operated by the insurgents in the Eastern Ghouta. No further launch was reported until the 26th of June 2016, when a missile heavily damaged a Mi-25, forcing it to make an emergency landing at Damascus International Airport.<ref>https://www.oryxspioenkop.com/2016/10/hide-and-seek-story-of-jaish-al-islams.html?m=1</ref> All of Jaysh al-Islam's Osa systems were likely retaken, or destroyed, upon the Syrian Arab Army's recapture of the Eastern Ghouta in April 2018.

Yemeni Civil War

On 29 November 2019, Russian sources speculated a Soviet-made 9K33 Osa fired by Houthi forces shot down a Saudi Arabian Army Aviation AH-64 Apache in Yemen.<ref>"Homepage – Infinite Scroll &#124; MBS News". Archived from the original on 21 June 2020. Retrieved 4 January 2021.</ref><ref>"Houthi Rebels Claim To Have Shot Down Saudi Apache Gunship And Wing Loong UAV in Yemen". 2 December 2019. Retrieved 4 January 2021.</ref> Neither Yemen nor Iran had any 9K33 Osa in their armed forces, while known Houthi-operated systems are based on the Soviet-made 2K12 Kub surface-to-air missile system which employs a two-stage rocket engine, and the air-to-air missiles R-73 and R-27T which both have a single-stage rocket engine.<ref>"Houthis reveal 2 new air defense systems". debriefer.net. 25 August 2019. Retrieved 4 January 2021.</ref>

2020 Nagorno-Karabakh conflict

The Armenian Air Defense extensively employed 9K33 Osa missile systems during the 2020 Nagorno-Karabakh conflict. During the opening days of the war, several videos released by the Azerbaijani military showed several Armenian 9K33 Osa and 9K35 Strela-10 vehicles destroyed by Bayraktar TB2 armed drones,<ref>"Azerbaijan used TB2 drone to destroy twelve 9K33 Osa short-range anti-aircraft systems of Armenia". 27 September 2020. Retrieved 4 January 2021.</ref><ref>Trevithick, Joseph; Newdick, Thomas (28 September 2020). "Everything We Know About The Fighting That Has Erupted Between Armenia And Azerbaijan". The Drive. Retrieved 4 January 2021.</ref> with a number of them destroyed in the following weeks when found on the battlefield.<ref>"Azerbaijan destroys another "Osa" anti-aircraft missile system of Armenian troops (Video)". News.az. 30 October 2020. Retrieved 4 January 2021.</ref> Twelve 9K33 Osa missile systems of Armenian Army were destroyed during the Nagorno-Karabakh conflict by Azerbaijani Bayraktar TB2s.<ref>GDC (27 September 2020). "Azerbaijan used TB2 drone to destroy twelve 9K33 Osa short-range anti-aircraft systems of Armenia". Global Defense Corp. Retrieved 15 July 2021.</ref> On 4 October 2020, an Azerbaijani Air force Sukhoi Su-25 aircraft was shot down by Armenian forces, probably by a 9K33 Osa while targeting Armenian positions in Fuzuli. The pilot, Colonel Zaur Nudiraliyev, died in the crash. Azerbaijani officials acknowledged the loss in December 2020,<ref>"Əsir düşməmək üçün "Su-25" döyüş təyyarəsini düşmən səngərinə çırpan şəhid polkovnik Zaur Nudirəliyev VİDEO" (in Azerbaijani). 27 December 2020.{{cite web}}: CS1 maint: unrecognized language (link)</ref><ref>"Armenian air defenses shot down Azerbaijani Su-25 during Karabakh conflict, pilot was killed: media". Al-Masdar News. 27 December 2020. Archived from the original on 22 January 2021. Retrieved 16 January 2021.</ref> with the 9K33 Osa vehicle possibly using passive detection and shoot and scoot tactics to survive the Azerbaijani suppression of air defenses (SEAD) missions.<ref>"Combat missions of the Azerbaijani Air Force in the Second Karabakh War". 27 December 2020.</ref>

Russo-Ukrainian War

Ukrainian 9K33 Osa launcher destroyed during the 2022 Russian invasion.

Both Russia and Ukraine have 9K33 Osa systems in their inventory.

On 30 March 2019, during the war in Donbas, the Ukrainian Joint Forces reported destruction of an Osa-AKM surface-to-air missile system along with a Zhitel R330Zh automatic jamming system.<ref>"Escalation in Donbas: One Ukrainian soldier killed, four wounded amid 19 enemy attacks in past day". Archived from the original on 30 March 2019. Retrieved 31 March 2019.</ref>

Senior sources of the Ukrainian Air Force stated that some Osa and Buk systems were destroyed by Kh-31P and Kh-58 anti-radiation missiles during the early stages of the Russian invasion in the spring of 2022.[1] Following the invasion, The Washington Post reported that the United States was sending additional Osa systems to Ukraine.<ref>Youssef, Nancy A.; Gordon, Michael R. (21 March 2022). "WSJ News Exclusive | U.S. Sending Soviet Air Defense Systems It Secretly Acquired to Ukraine". Wall Street Journal. Retrieved 14 December 2024.</ref> Poland has also provided Ukraine with an undisclosed number of systems in 2022.<ref>"Polish Osa-AK air defense systems spotted in Ukraine". Militarnyi. 31 December 2022. Retrieved 14 December 2024.</ref>

In December 2024, it was revealed that all Ukrainian Ground Forces units operating the Osa received modified versions capable of firing the R-73 air-to-air missile in response to the dwindling stocks of the 9M33 missile.<ref name="Newdick">Newdick, Thomas (12 December 2024). "Ukraine's SA-8 Gecko 'FrankenSAM' Adapted To Fire Air-To-Air Missiles Seen In New Detail". The War Zone. Retrieved 14 December 2024.</ref>

As of 16 December 2025, 34 losses of 9K33s by Russia and 23 by Ukraine are documented with photos or video by the OSINT website Oryx.<ref>Janovsky, Jakub; Naalsio; Aloha; Dan; Kemal; Alexander Black (24 February 2022). "Attack On Europe: Documenting Russian Equipment Losses During The Russian Invasion Of Ukraine". Oryx. Retrieved 14 December 2024.</ref><ref>Janovsky, Jakub; naalsio26; Aloha; Dan; Kemal; Alexander, Black (24 February 2022). "Attack On Europe: Documenting Ukrainian Equipment Losses During The Russian Invasion Of Ukraine". Oryx. Retrieved 14 December 2024.{{cite web}}: CS1 maint: numeric names: authors list (link)</ref> The War Zone notes that the number of losses could be higher since Oryx only tabulates visually confirmed losses.<ref name="Newdick" />

2025 India-Pakistan conflict

The Indian Army employed its Osa regiments as part of its Integrated Air Defence System during the 2025 India-Pakistan Conflict. Footage shot by Asian News International after the conflict, shows that an Osa regiment scored a number of claimed kills against low-flying Pakistani drones, such as the Turkish made Yiha-IIIs.<ref>"Amritsar, Punjab: Indian Army shows a demo of how Indian Air Defence systems..." Asian News International. 19 May 2025.</ref>

Command post

PPRU-M1 (PPRU-M1-2) is a mobile command center for a mixed grouping of air defense forces, including 9K33 Osa, and Tor missile system, 2K22 Tunguska, 9K35 Strela-10 and 9K38 Igla.<ref>"Зенитные ракетные системы и комплексы" (in русский). Archived from the original on 26 September 2011. Retrieved 14 November 2014.</ref>

Upgrades

Belarus

T38 Stilet
  • 9K33-1T "Osa-1T" was developed by UE "Tetraedr" from Belarus. A SAM system comprises combat assets and technical support means, including:
    • 9А33-1Т TELAR or "Combat Vehicle", based on the original BAZ-5937 (or the new MZKT-69222) and equipped with a new day/night camera system OES-1T instead of the original day-only 9Sh33 or 9Sh38-2 "Karat";
    • 9M33M2 or M3 SAMs, or the new 9M33M3-1 with a range of 20&nbsp;km;
    • 9Т217-1T Transportation and Loading Vehicle (TLV);
    • 9V210-1T Maintenance Vehicle (MV);
    • 9V214-1T Alignment Vehicle (AV);
    • 9V242-1T Automatic Mobile Check-up and Testing Station (AKIPS) and
    • 9F16M2 Ground Equipment Kit (GEK).<ref>"933-1 SA-1 Short Range Air Defence System". Archived from the original on 26 November 2014. Retrieved 14 November 2014.</ref><ref>Gyürösi, Miroslav (January 2009). "Tetraedr reveals three contracts for Osa-1T" (PDF). Janes. Archived (PDF) from the original on 26 November 2014. Retrieved 25 August 2012.</ref><ref>Gyürösi, Miroslav (February 2006). "Osa-1T upgrade boosts combat capability" (PDF). Janes. Archived (PDF) from the original on 26 November 2014. Retrieved 25 August 2012.</ref>
  • T38 "Stilet" is a further development of Osa-1T. Main components are the T381 TELAR on MZKT-69222 chassis and the new T382 missile. Maximum range of targets' destruction 20&nbsp;km, minimal RCS of targets detected 0.02 m<sup>2</sup>.<ref>"T38 STILET Short Range Air Defence System". Archived from the original on 26 November 2014. Retrieved 14 November 2014.</ref>

Poland

  • Osa-AKM-P1 "Żądło" (export name SA-8P Sting) is a Polish upgrade of 9K33M2 "Osa-AK" and 9K33M3 "Osa-AKM". Probably 32 of the 64 systems purchased from the Soviet Union have been upgraded. An upgraded 9A33BM3-P1 TELAR was displayed at the MSPO 2004 exhibition in Kielce, Poland. The upgraded vehicle is fitted with the SIC 12/TA passive detection and identification system as well as the ISZ-01 IFF system.<ref name="articles.janes.com">"Defense & Security Intelligence & Analysis: IHS Jane's – IHS". Retrieved 14 November 2014.{{cite web}}: CS1 maint: deprecated archival service (link)</ref><ref>"Defense & Security Intelligence & Analysis: IHS Jane's – IHS". Retrieved 14 November 2014.{{cite web}}: CS1 maint: deprecated archival service (link)</ref>

In 2019, Poland began modification of the whole environment of the Osa system. Those works has been commissioned to WZU Grudziądz. The total cost is about €40-50 million.<ref>"Usługi - 153124-2019 - TED Tenders Electronic Daily". ted.europa.eu. Retrieved 4 January 2021.</ref><ref>"Usługi - 158283-2019 - TED Tenders Electronic Daily". ted.europa.eu. Retrieved 4 January 2021.</ref><ref>"Usługi - 155907-2019 - TED Tenders Electronic Daily". ted.europa.eu. Retrieved 4 January 2021.</ref><ref>"Usługi - 172966-2018 - TED Tenders Electronic Daily". ted.europa.eu. Retrieved 4 January 2021.</ref>

Ukraine

  • Osa-AKM "FrankenSAM" is a 2024 Ukrainian upgrade funded by the Come Back Alive Foundation, which invested over 14 million hryvnias (around US$336,000) to upgrade an undisclosed number of Osa-AKM systems. This upgrade allows the R-73 air-to-air missile to be mounted and launched, in addition to the original 9M33 missile series.<ref name="Newdick" />

Operators

Operators
  Current
  Former
Armenian 9K33 Osa missiles during a military parade in Yerevan
Romanian 9K33 Osa missile launch at the Capu Midia firing range.

Current operators

Indian 9K33 Osa missile system in Delhi during a military parade

Former operators

References

  1. 1.0 1.1 Williams 2023, p. 29.
  2. 2.0 2.1 2.2 2.3 2.4 2.5 2.6 O'Halloran & Foss 2002, p. 145.
  3. O'Halloran & Foss 2002, pp. 144−145.
  4. 4.0 4.1 O'Halloran & Foss 2002, p. 143.
  5. IISS 2024, p. 472.
  6. IISS 2024, p. 179.
  7. IISS 2024, p. 180.
  8. IISS 2024, p. 183.
  9. IISS 2024, p. 77.
  10. IISS 2024, p. 428.
  11. IISS 2024, p. 432.
  12. IISS 2024, p. 185.
  13. IISS 2024, p. 100.
  14. IISS 2024, p. 267.
  15. IISS 2024, p. 125.
  16. IISS 2024, p. 131.
  17. IISS 2024, pp. 193,199.
  18. IISS 2024, p. 521.
  19. IISS 2024, p. 386.
  20. IISS 2024, p. 209.
  21. IISS 2024, p. 212.
  22. 22.0 22.1 22.2 22.3 Cullen & Foss 1992, p. 134.

Bibliography

External links

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