S-51 Self-Propelled Gun

This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these messages) Some of this article's listed sources may not be reliable. Please help improve this article by looking for better, more reliable sources. Unreliable citations may be challenged and removed. (March 2020) (Learn how and when to remove this message) You can help expand this article with text translated from the corresponding article in Russian. (March 2020) Click [show] for important translation instructions. View a machine-translated version of the Russian article. Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia. Consider adding a topic to this template: there are already 956 articles in the main category, and specifying|topic= will aid in categorization. Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article. You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing Russian Wikipedia article at [[:ru:С-51]]; see its history for attribution. You may also add the template {{Translated|ru|С-51}} to the talk page. For more guidance, see Wikipedia:Translation. (Learn how and when to remove this message)

The S-51 is an experimental Soviet heavy self-propelled artillery unit from the Great Patriotic War . This combat vehicle was developed in the fall of 1943 on the basis of the KV-1s heavy tank by the Central Artillery Design Bureau (TsAKB) under the leadership of Vasily Gavrilovich Grabin .