T-84
Ukrainian main battle tank based on the Soviet T-80
The T-84 is a Ukrainian main battle tank (MBT), based on the Soviet T-80 MBT introduced in 1976, specifically the diesel engine version: T-80UD. The T-84 was first built in 1994 and 10 vehicles entered service in the Ukrainian Armed Forces in 1999 under the name BM Oplot. Its high-performance opposed-piston engine makes it a fast tank, comparable to other modern MBTs with a power-to-weight ratio of about 26 horsepower per tonne (19 kW/t).
The BM Oplot zr. 2008 and 2009 is an advanced version incorporating an armoured ammunition compartment in a new turret bustle (this was not part of the autoloader system, but extra ammunition for when replenishment is needed). Few of these vehicles were made, with them being used for parades and showcases heavily. The T-84-120 Yatagan is a prototype model intended for export, mounting a 120 mm gun able to fire NATO-standard tank ammunition and anti-tank guided missiles.
Development history
After the adoption of the T-80 tank, the Soviets began improving its design. The disadvantages of the gas-turbine engine were readily apparent, and so several design projects were initiated to adopt a diesel alternative.
Development of the T-80UD
Leningrad Kirov Plant (LKZ) began work in 1975 with a diesel 2V16 1500 hp engine on a T-80B chassis. This was designated the Ob.
This brief starts where responsible research should: with the source description of “T-84” as ukrainian main battle tank based on the Soviet T-80. Everything that follows is an evidence route, not borrowed authority.
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The subject matters to the history & society register because the source frames it as ukrainian main battle tank based on the Soviet T-80. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Chronology, provenance and viewpoint should be read together before a broad social or political interpretation is accepted. The source revision retrieved here is dated Sep 21, 2026. The linked authority identifier is Q373788. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1976, 1994, 1999 and 2008.
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This entry incorporates text from “T-84” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.