An Iranian class of four aluminium catamaran missile corvettes built for the IRGC Navy, combining vertical-launch cells, anti-ship missiles, fast boats and a helicopter deck on a 600-tonne hull.
Russia's small, stealthy "missiles-with-a-hull" corvette — an 860-ton Project 22800 ship that carries eight Kalibr or Oniks cruise missiles, the more seaworthy sibling of the Buyan-M. Cheap, heavily armed, and a recurring Ukrainian target.
Russia's small, shallow-draft Kalibr-armed missile corvette — a ~950-tonne hull that can transit inland rivers between fleets and lob land-attack cruise missiles 1,500 km. It fired the first combat Kalibr at Syria in 2015 and has been a principal platform for strikes on Ukraine.