"Nona-SVK" is Russian 120-mm battalion self-propelled artillery gun (SPG). It was designed to suppress artillery and mortar batteries, rocket launchers, armored targets and to destroy firepower, control stations and manpower. The gun is mounted on a floating armored 8x8 chassis and able to follow the tanks, immediately overcome the trenches, ditches and water obstacles.
The main armament of a SPG is a 2S23 120-mm rifled gun-howitzer-mortar 2A60, which is a modified version of the 2A51 cannon installed in the self-propelled artillery 2S9 "Nona-S". 2A60 barrel consists of a tube and breech. The length of the tube is 24.2 caliber.
The vehicle is additionally equipped with a 7.62 mm PKT machine gun. Machine gun is mounted on a rotating turret of SPG commander. To combat air targets there are two MANPADS 9K38 "Igla-1".
The SPG 2S23 is powered by V-shaped 8-cylinder four-stroke liquid-cooled diesel engine KAMAZ-7403 delivering 260 hp . Transmission is mechanical with fixed axle shafts with five forward and one reverse gear. Maximum speed is limted to 80 km/h.
2S23 chassis is unified with armored personnel carrier BTR-80 and consists of four axles. All of them are drive axles equipped with run-flat tires
Nona-SVK started its service in Soviet Union but then all items were inherited by Russia. Nowadays only Russia and Venezuela are operating such vehicles. Despite the fact that some sources indicated China as one of the operators neither supplies of 2S23 nor license production in China have been never implemented.
2S23 has been used for the first time during the First Chechen war and as mentioned by different sources was used in the war for Donbas as well. Thus spokesperson of the National Guard of Ukraine mentioned that "Putin's friends" left shells from 2S23 in one of the Kramatorsk factories after Ukrainian forces entered the city.