Tanks

T-84 Oplot

Also known as
  • T-84
  • Oplot
  • BM Oplot
  • Oplot-M
  • Oplot-T
  • T-84U Oplot
  • T-84-120 Yatagan
  • Object 478DU9
  • Object 478DU9-1
  • Object 478DU9-T

The T-84 Oplot is a Ukrainian main battle tank from the Kharkiv T-80UD diesel lineage, built around a three-person crew, autoloaded 125 mm KBA3 gun, 1,200 hp 6TD-series diesel powerpack, modular armor, and Ukrainian fire-control and countermeasure upgrades. Ukraine kept only a very small domestic fleet, while Thailand received the larger Oplot-T export batch; both Ukrainian BM Oplot and Thai Oplot-T tanks have direct conflict-use documentation in the catalog.

T-84 Oplot, Main battle tank, Tanks
Image source: BM Oplot, Kyiv 2018, 02.jpg

Role in Conflicts

2025 Thailand-Cambodia Border Conflict
Fire Support
Side
Thailand

Defense reporting documented Royal Thai Army Oplot-T tanks firing on Cambodian military positions near Wat Kaeo Siharatsavararam and supporting infantry operations around the Preah Vihear area in July 2025; independent confirmation of some battlefield details remained limited.

Profile / Specs

Profile

Origin
Ukraine
Type
Main battle tank
Service note
Entered Ukrainian service in 1999; BM Oplot adopted in 2009
Designer
Kharkiv Morozov Machine Building Design Bureau
Designed
1990s T-80UD development line
Unit cost
Reported at about $4.7 million for an Oplot in 2017; Thailand's 49-tank order was reported at $240 million
Produced
Limited Ukrainian production from the late 1990s; Oplot-T export deliveries to Thailand completed in 2018
Number built
T-84U Oplot reported as 12 examples; 49 Oplot-T tanks exported to Thailand; BM Oplot production stayed very limited
Developed from
T-80UD diesel-powered main battle tank branch

Specifications

Crew
3
Armament
Stabilized 125 mm KBA3 smoothbore gun with autoloader, 7.62 mm coaxial machine gun, and 12.7 mm anti-aircraft machine gun
Ammunition
Army Technology lists 46 main-gun rounds for Oplot, including 28 in the automatic loader, plus APFSDS, HEAT, HE-FRAG, and guided-missile options
Weight
About 48,000 kg for T-84 Oplot; BM Oplot/Oplot-M references commonly list about 51 tonnes
Mobility
6TD-2 diesel engine rated at 1,200 hp; road speed commonly listed at 65-70 km/h
Range
About 450-500 km depending on variant and reference
Protection
Multilayer/composite armor with modular explosive reactive armor and Varta-style electro-optical countermeasures
Fire control
Stabilized main gun with modernized sights; BM Oplot references describe panoramic commander sighting and laser-guided missile engagement capability
Dimensions
Approximately 7.70 m hull length, 3.77 m width, and 2.76 m height for T-84 Oplot references; BM Oplot/Oplot-M references list variant-specific dimensions near 7.1 m hull length, 3.4 m width, and 2.8 m height
Variants

The T-84 name covers the Ukrainian diesel branch after the T-80UD, while BM Oplot/Oplot-M and Oplot-T describe later Ukrainian and Thai configurations; the T-84-120 Yatagan was a NATO-caliber export prototype.

VariantConfigurationDesignation notes
T-84U OplotEarly Ukrainian Oplot configuration

Army Recognition describes the T-84 Oplot as a Ukrainian MBT developed by KMDB and linked to the T-80UD line, with a welded turret, Ukrainian fire-control equipment, and upgraded protection.

Sources: T-84 Oplot, Encyclopedia of History of Ukraine T-84U Oplot and BM Oplot

BM OplotLater Ukrainian production standard

Ukrainian reporting identifies the BM Oplot as the latest T-84-series model adopted by Ukraine in 2009 and publicly shown in Ukrainian brigade service in 2024.

Sources: Encyclopedia of History of Ukraine T-84U Oplot and BM Oplot, Oplot Tank Shown in Combat on Kharkiv Front by Ukrainian Forces

Oplot-TThailand export variant

Thailand ordered 49 Oplot-T/T-84 tanks from Ukraine in 2011, and open reporting tied to Ukroboronprom said the Thai contract was completed in March 2018.

Sources: UkrOboronProm Completes Royal Thai Army Oplot-T Main Battle Tanks

T-84-120 Yatagan120 mm NATO-caliber prototype

The Yatagan, also called T-84-120 or KERN2-120, adapted the Oplot family with a 120 mm gun for NATO-standard ammunition and export trials.

Sources: Yatagan Main Battle Tank, New T-84 Yatagan Main Battle Tank with 120mm NATO Cannon

Timeline

T-84 Oplot Key Events

  1. T-84 enters Ukrainian service

    The T-84 line entered Ukrainian service in small numbers after development from the diesel-powered T-80UD branch.

    Sources: T-84 Oplot

  2. BM Oplot adopted

    Ukrainian reporting identifies the BM Oplot as the latest T-84-series tank and notes its 2009 adoption by the Ukrainian Armed Forces.

    Sources: Encyclopedia of History of Ukraine T-84U Oplot and BM Oplot, Oplot Tank Shown in Combat on Kharkiv Front by Ukrainian Forces

  3. Thailand signs 49-tank order

    Ukrspecexport and the Royal Thai Army signed a contract for 49 Ukrainian Oplot tanks, creating the main export production run for the family.

    Sources: Ukraine to Supply 49 Oplot Tanks to Thailand

  4. Thai Oplot-T contract completed

    Open reporting tied to Ukroboronprom said Ukraine had completed the more-than-$240 million Oplot-T contract for Thailand.

    Sources: UkrOboronProm Completes Royal Thai Army Oplot-T Main Battle Tanks

  5. Ukraine announces renewed Oplot order plan

    Ukraine's defense minister test-drove an Oplot in Kharkiv Oblast and said the Ministry of Defence would order Ukrainian-made Oplot tanks for the army.

    Sources: Ukraine's Defence Minister Test-Drives Oplot Tank, Ukrainian Ministry of Defence Confirms Plan to Order T-84 Oplot Tanks

  6. BM Oplot shown in Kharkiv front service

    Ukrainian forces publicly showed an Oplot tank in the Third Separate Tank Brigade's combat service during the defense of Kharkiv Oblast.

    Sources: Oplot Tank Shown in Combat on Kharkiv Front by Ukrainian Forces

  7. Thai Oplot-T tanks reported in border combat

    Defense reporting placed Royal Thai Army Oplot-T tanks in the July 2025 Thailand-Cambodia border fighting, including direct-fire support against Cambodian positions.

    Sources: Ukrainian Oplot-T Tanks of the Thai Army Engage in Combat in Cambodia, Thai Army Deploys Ukrainian-Made T-84 Oplot-M Main Battle Tanks Against Cambodia, Ukrainian-Made Oplot-M Tanks and BTR-3E1s Spotted in Action in Thailand

Lineage and Export Split

The Oplot page covers a narrow Ukrainian tank family rather than every post-Soviet 125 mm tank. Its key split is between Ukraine's small BM Oplot fleet and Thailand's larger Oplot-T export batch.

BranchDocumented roleReader cue
T-80UD to T-84Ukrainian diesel-line developmentThe T-84 keeps the Soviet-style three-person/autoloader layout but is rooted in Kharkiv's diesel-powered T-80UD branch.
BM OplotUkrainian service modelThe 2009-adopted BM Oplot added the later panoramic sight, Duplet armor package, communications, and driving-control changes described in Ukrainian reference material.
Oplot-TRoyal Thai Army export modelThailand's 49-vehicle batch gives the family its largest documented operator outside Ukraine and appears in the 2025 border-conflict row.
T-84-120 YataganNATO-caliber export prototypeThe Yatagan replaced the normal 125 mm layout with a 120 mm gun for NATO-standard ammunition and export trials.

Sources: Army Recognition T-84 Oplot profile; Encyclopedia of History of Ukraine Oplot entry; MilitaryLeak Thai Oplot-T completion report; Army Guide Yatagan profile.

Media

T-84 Oplot Videos

T-84 Oplot Images

T-84 Oplot, Main battle tank, Tanks - view 1
Source: BM Oplot, Kyiv 2018, 04.jpg
Related Weapon Systems
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PT-91 Twardy, Main battle tank, TanksTanksPT-91 TwardyMain battle tankThe PT-91 Twardy is a Polish T-72M1-derived main battle tank from Bumar-Labedy, combining the familiar three-crew 125 mm autoloaded layout with domestic ERAWA reactive armor, Drawa-family fire-control improvements, and Polish powerpack options. The family also includes the Malaysian PT-91M Pendekar export branch with a 1,000 hp-class powerpack and revised fire-control package, while Ukraine's wartime examples are Polish-supplied T-72-family tanks used for direct armored fire against Russian positions.
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M-84A4 Sniper, Main battle tank, TanksTanksM-84A4 SniperMain battle tankThe M-84A4 Sniper is a Croatian upgrade of the Yugoslav M-84 main battle tank, itself derived from the Soviet T-72 family. The variant keeps the three-crew, autoloaded 125 mm tank layout while emphasizing improved fire control, day/night sighting, communications, and Croatian M-84 fleet modernization; Croatian officials confirmed M-84 transfers to Ukraine, and Ukrainian 141st Mechanized Brigade crews later appeared with vehicles identified in defense reporting as M-84A4 Snajper tanks during the 2014 Russia-Ukraine War.

Sources

T-84 OplotPublisher: Army Recognition | Note: Supports T-84 Oplot background, KMDB development context, armament, crew, protection, mobility, dimensions, and user specifications. | Accessed: 2026-07-06Encyclopedia of History of Ukraine T-84U Oplot and BM OplotPublisher: Institute of History of Ukraine, National Academy of Sciences of Ukraine | Note: Supports Ukrainian T-84U and BM Oplot lineage, Object designations, upgrade distinctions, 2009 adoption, reported T-84U quantity, Thai Oplot-T order and delivery period, and later Oplot-2M/Bastion context. | Accessed: 2026-07-06Oplot-M Main Battle TankPublisher: Army Technology | Note: Supports BM Oplot/Oplot-M armament, ammunition, fire-control, countermeasure, protection, and mobility details. | Accessed: 2026-07-06Malyshev Plant, Morozov Design Bureau to Supply New Batch of Modernized T-84 Tanks to Ukraine's Armed ForcesPublisher: KyivPost / Interfax-Ukraine | Note: Supports Ukrainian service, Malyshev/KMDB repair and modernization roles, and reported T-84 armament, engine, speed, and protection details. | Accessed: 2026-07-06Ukraine's Tanks Are So Good, Its Own Army Can't Afford ThemPublisher: Hromadske | Note: Supports procurement and production background, including reported Oplot cost, Malyshev Plant export production, and the limits on Ukrainian Army procurement. | Accessed: 2026-07-06Ukroboronprom Annual Report 2020Publisher: Ukroboronprom | Note: Official annual report supports BM Oplot, T-80UD, 6TD/6TD-2 engine, and KBA-3 gun manufacturing context within Ukraine's armoured-vehicles product line. | Accessed: 2026-07-06Ukraine to Supply 49 Oplot Tanks to ThailandPublisher: KyivPost / Interfax-Ukraine | Note: Supports the 2011 Ukrspecexport and Royal Thai Army contract for 49 Ukrainian Oplot tanks. | Accessed: 2026-07-06UkrOboronProm Completes Royal Thai Army Oplot-T Main Battle TanksPublisher: MilitaryLeak | Note: Supports the 2018 completion of the Ukrainian Oplot-T main battle tank contract for Thailand and the reported contract value of more than $240 million. | Accessed: 2026-07-06Yatagan Main Battle TankPublisher: Army Guide | Note: Supports T-84-120 Yatagan alternative designations and 120 mm NATO-caliber export-prototype armament context. | Accessed: 2026-07-06New T-84 Yatagan Main Battle Tank with 120mm NATO CannonPublisher: Army Recognition | Note: Supports the Yatagan/T-84-120 designation, 2000 design context, 120 mm NATO cannon, and T-80UD/T-84 lineage framing. | Accessed: 2026-07-06Ukraine's Defence Minister Test-Drives Oplot TankPublisher: Ukrainska Pravda | Note: Supports the May 2023 Ukrainian Ministry of Defence plan to order Oplot tanks from Ukroboronprom and the Kharkiv Oblast field-test context. | Accessed: 2026-07-06Ukrainian Ministry of Defence Confirms Plan to Order T-84 Oplot TanksPublisher: Army Recognition | Note: Supports the May 2023 field test of a Ukrainian-made T-84 Oplot and the Ukrainian defense minister's statement that Oplots would be ordered for Ukraine's army. | Accessed: 2026-07-06The Significance of the Oplot Tank in the Armed Forces of UkrainePublisher: Defense Express | Note: Supports Ukraine's 2023 Oplot procurement statement and broader armored-fleet context for why a domestic Oplot order mattered during the 2014 Russia-Ukraine War. | Accessed: 2026-07-06Oplot Tank Shown in Combat on Kharkiv Front by Ukrainian ForcesPublisher: The New Voice of Ukraine | Note: Directly supports 2014 Russia-Ukraine War used by Ukrainian forces, including the Third Separate Tank Brigade and Kharkiv Oblast defense context. | Accessed: 2026-07-06T-84 Oplot Tank Makes Debut in Defense of Kharkiv RegionPublisher: Defense Express | Note: Directly supports 2014 Russia-Ukraine War used by Ukrainian forces by reporting the T-84 Oplot in Third Separate Tank Brigade service during the defense of Kharkiv Oblast. | Accessed: 2026-07-06Ukrainian-Made Oplot-M Tanks and BTR-3E1s Spotted in Action in ThailandPublisher: UNITED24 Media | Note: Directly supports 2025 Thailand-Cambodia Border Conflict used by Thailand, reporting Royal Thai Army T-84 Oplot-M/Oplot-T tanks deployed during border operations and involved near the Preah Vihear area. | Accessed: 2026-07-06Ukrainian Oplot-T Tanks of the Thai Army Engage in Combat in CambodiaPublisher: Militarnyi | Note: Directly supports 2025 Thailand-Cambodia Border Conflict used by Thailand, reporting Royal Thai Army Oplot-T tanks firing during combat at the Thailand-Cambodia border and noting the 49-tank Thai fleet. | Accessed: 2026-07-06Thai Army Deploys Ukrainian-Made T-84 Oplot-M Main Battle Tanks Against CambodiaPublisher: Army Recognition | Note: Directly supports 2025 Thailand-Cambodia Border Conflict used by Thailand, reporting Royal Thai Army T-84 Oplot-M tanks opened fire on Cambodian military positions near Wat Kaeo Siharatsavararam while noting independent confirmation remained pending. | Accessed: 2026-07-06BM Oplot, Kyiv 2018, 02.jpgPublisher: Wikimedia Commons | Note: Image provenance and licensing page for a BM Oplot photographed in Kyiv in 2018 under Creative Commons Attribution-Share Alike 4.0. | Accessed: 2026-07-06BM Oplot, Kyiv 2018, 04.jpgPublisher: Wikimedia Commons | Note: Image provenance and licensing page for an additional BM Oplot gallery image from Kyiv in 2018. | Accessed: 2026-07-06