The Coastal Troops are a service arm of the Russian Navy, designed to guard Russian fleets' forces, personnel, and seashore objects against exposure to enemy surface ships; to defend naval bases and other important facilities of the Fleets from the land, including against amphibious and air assaults; to be landed and act in the course of amphibious and air assaults; to support the Russian Ground Forces in the course of defence against airborne and amphibious assaults; to destroy surface ships, boats and amphibious transport means within the fire envelope. Wikipedia