This is going to be an up-to-date ship armed with missile and artillery weapons, and equipped with electronic countermeasure equipment. The Buyan-M class corvettes are said to be armed with nuclear-capable Kalibr cruise missiles (NATO code name Sizzler) with a claimed range of at least 1,500 km.[7] The ships' small size and displacement enable them to operate within inland river systems, including traversing the Moscow Canal which allows them to deploy to various seas around western Russia. This is a particular advantage for the Buyan-M series, because while the Intermediate-Range Nuclear Forces Treaty prohibits long-range cruise missiles from operating on land they can operate from ships, so a river-based corvette can deploy missiles without being subject to restrictions.[8]