The 2S1 Gvozdika (Russian: 2С1 «Гвоздика», “Carnation”) is a Soviet self-propelled howitzer based on the chassis MT-LB APC, mounting the 122 mm 2A18 howitzer. “2S1” is its GRAU designation. An alternative Russian designation is SAU-122 but in the Russian Army it is commonly known as Gvozdika. The 2S1 is fully amphibious with very little preparation, and once afloat is propelled by its tracks. A variety of wider tracks are also available to allow the 2S1 to operate in snow or swamp conditions. It is NBC protected and has infra-red night-vision capability.
Additional Information: en.wikipedia.org/wiki/2S1