Buyan-class corvette

The Buyan class (Russian: Буян, lit. 'Buyan'), Russian designation Project 21630 Buyan, are a series of corvettes (small artillery in Russian classification) developed by Zelenodolsk Design Bureau for the Russian Navy's Caspian Flotilla. The Buyan-class ships are primarily designed for operations within littoral zones to protect Russia's vast coastal areas. Due to the small tonnage, they can operate even within shallow parts of oceans and seas and Russia's extensive inland waterway system. The export variant is known as Project 21632 Tornado. Since 2010, all subsequent vessels are being constructed as improved Project 21631 subclass, incorporating greater tonnage, stealth technology and the 3S14 vertical launching system.