The BAT-M (Object 405) high-speed tracked bulldozer was developed based on the chassis of the AT-T (Object 401) heavy artillery tractor—a vehicle that was never officially adopted for service by the Polish Armed Forces (only two units were purchased for testing). It did, however, serve as the foundation for several heavy engineering vehicles—specialized earthmoving machines that have been widely used in the Polish military since the 1960s: the BAT-M (high-speed bulldozer), the BTM-3 (trenching excavator), and the MDK-2 (milling excavator). The BAT-M was employed for tasks such as road construction, terrain leveling, spreading loose materials, preparing positions, creating crossings through contaminated areas, ditches, and ravines, clearing debris and vegetation, as well as snow removal. The vehicle was equipped with a crane with a lifting capacity of 2000 kg.
Technical specifications:
Length / width (in transport vs. operational configuration) / height: 7.05 / 4–5 / 3.75 m
Weight: 27.5 t
Crew: 2
Propulsion: liquid-cooled V12 diesel engine (W-401 or A-401G) with an output of 415 hp
Maximum speed (on-road / during operation): 35 / 1.5–16 km/h
