T-84

The vehicle has three forward-facing periscopes in front of the driver's cupola. The centre periscope can be replaced with a night driving device.

The fire control system includes a gunner's day sight, PNK-6 commander's panoramic sighting system, PTT-2 thermal imaging sight, anti-aircraft sight and anti-aircraft machine gun control system. Detection range of targets for thermal sighting system is up to 8 km.

The tank is also equipped with LIO-V ballistic computer, armament stabiliser and other systems.

The advanced fire-control system enables the gunner or commander to lay and fire the main armament on the move. The stationary and moving targets can be hit with a high first round hit probability.[2]

The protection system includes multilayer passive armour, Duplet explosive reactive armour, Zaslon active protection system, Varta optronic countermeasures system and other tank protection means.

Built-in new generation Duplet anti-tandem-warhead explosive reactive armour protects against APFSDS, (HESH) or high-explosive plastic (HEP) and HEAT-type projectiles.

Duplet ensures protection against:

• hand anti-tank grenades, hand-held and stationary grenade launchers and recoilless guns (including ammunition with tandem warheads)
• anti-tank missiles of TOW-2, MILAN and Shturm-S type
• HEAT projectiles fired by 125 mm tank smoothbore guns
• APFSDS projectiles fire by 125 mm and 120 mm tank guns

Both sides of the driver's compartment are fitted with explosive reactive armour panels for extended protection. The hull sides are hinged with large rubber skirts to withstand the attacks of man-portable anti-tank weapons. The modular explosive reactive armour package can be easily replaced or upgraded according to the future requirements.

Oplot features a Varta optronic countermeasures system for deceiving incoming missiles and anti-tank guided weapons. The system integrates laser warning sensors, infra-red jammer and smoke / aerosol screen laying system. The optronic countermeasure system provides:

• confusing of the guidance systems of ATGM by putting out laser jamming covering the horizontal plane of ±18° relative to the main gun tube and ±2° in the vertical plane
• jamming of the ATGM guidance systems that use laser illumination of targets, semi-automatic laser guided homing projectiles as well as artillery systems equipped with laser range-finders by activating the remote fast-deploying aerosol screens in a sector of ±45° relative to the main gun tube

Crew's collective protection system ensures protection of the crew and interior equipment against effects of nuclear explosions, radioactive substances, toxic agents and biological warfare agents, as well as detection and suppression of fires in the crew compartment and power pack compartment.

The Oplot tank can withstand an explosion of up to 10 kg trinitrotoluene (TNT) under the tank track and up to 4 kg TNT under the driver's compartment. The vehicle has overpressure-type NBC protection system and can be fitted with track mine-clearing systems.[2]

The first T-84 prototype vehicle rolled out in 1994, and in the same year it was decided to build several more vehicles. They were subjected to extensive company and army trials. After successful completion of the extensive trials programme in the late 1990s the T-84 MBT entered service with the Ukrainian Army in 1999.[11]

In September 2011, the Malyshev Plant announced plans to produce the first batch of five Oplot-M tanks for the Thai Army by the end of the year. Under the contract, the Ukrainian company will make 49 tanks worth over US$200 million.[12] As of November 2017, 31 tanks have been delivered.[13]

•  Ukraine

The Ukrainian Ground Forces has 10 T-84 Oplot in service.[14]

•  Thailand

In March 2011, the Royal Thai Army placed an order for 49 T-84s to replace its fleet of aging M41A3 Walker Bulldog light tanks. The government has approved 7.155 billion baht to purchase the first 49 Oplot tanks to be assigned to several units: the 2nd Cavalry battalion (Royal Guard at Fort Chakrabongse, Prachinburi), the 4th Cavalry battalion (Royal Guard at Kiakkai, Bangkok), the 8th Cavalry battalion (Fort Suranari, Nakhon Ratchasima), and the 9th Cavalry battalion (Fort Ekathotsarot, Phitsanuloke).[15][16][17] In April 2017, it was reported that following the delayed deliveries from this tank, the Royal Thai Army was expected to decline the remainder of the sale and acquired the Chinese VT-4 main battle tank instead of the Ukrainian tank, due to the long term delivery schedule.[18][19][20] The signed order for 49 units has to be completed by the month of January, 2017, it was reported that other deliveries may not be expected.[21] A 26 March 2018 press release by Ukroboronprom stated that the 2011 contract for supplying Oplot-T tanks to Thailand had successfully completed and that the last party of tanks had passed checks by the customers and would be sent to the buyer in the near future.[22] According to The Military Balance 2019, Thailand had acquired 49 T-84 Oplot main battle tanks.[23]

•  United States

1 unit, for technologies analysis and operational OPFOR training.[24][25]

•  Pakistan

In 2017, Ukraine was in talks with Pakistan for the sale of 100 Oplot Tanks.[26]

•  Azerbaijan

In January 2011, Azerbaijan showed interest in the Oplot main battle tank. The Defense Ministry of Ukraine has long been holding negotiations on this issue.[27] In June 2013, it has been made public that Azerbaijan had instead purchased 100 Russian T-90 tanks,[28] in a series of rearmament deals worth $4 billion with Russia.[29]

•  Bangladesh

In 2007 the Bangladesh Army began negotiations for the procurement of 76 T-84 Yatagan tanks in the first batch. The Bangladesh Army intends to induct a substantial number of Yatagans (200 to 300) over the next several years as part of its third generation main battle tank procurement program.[30] However, Bangladesh finally decided to buy 44 MBT-2000 in 2011.[31]

•  Greece

In 1998, the T-84M Oplot entered the tender for a new base tank for Greece. The Leopard 2A6 won the tender, defeating the French Leclerc, the British Challenger, the American Abrams, the Ukrainian T-84M and the Russian T-80U.

•  Malaysia

T-84 Jatagan was offered to the Malaysian Army but lost to the Polish PT-91.

•  Peru

In 2009, Peru reportedly tested the Oplot tank, but the government of Alan Garcia later decided to acquire test examples of the Chinese MBT-2000 in late 2010, only to have the government of his successor, Ollanta Humala, abandon the purchase in early 2012 to seek other alternatives.[32][33] In May 2013, the T-84 was reported to be part of comparative tests to be conducted by Peru. The T-84 competed against the T-90S, the M1A1 Abrams, the Leopard 2A4 and A6, and the T-64 also offered by Ukraine.[34] By September 2013, only the T-84, T-90S, Russian T-80, and M1A1 Abrams were still competing. In the end Polish PT-91 based on T-90 was chosen.[35]

•  Turkey

The Turkish army was planning to buy the T-84, but withdrew from it in favor of developing the Altay (tank) with Hyundai Rotem.