Classification of warships

Before World War II: Battleships, heavy cruisers, light cruisers, destroyers, aircraft carriers, escort aircraft carriers, submarines, escort aircraft carriers, hunting submarines, patrol ships, minesweepers, mine-laying ships, supply ships, landing ships, and air battleships (air battleships are Japanese patents, only Japan has: Yi Shi).

From World War II to the end of the Cold War: aircraft carriers, guided missile cruisers, helicopter carriers, frigates, destroyers, anti-submarine destroyers, hunting submarines, conventional power submarines, nuclear-powered attack submarines, strategic nuclear submarines, supply ships, landing ships, amphibious assault ship, minesweepers, nuclear-powered cruisers (only the United States has one: Boracay).

Since the Cold War: aircraft carriers (light, medium and heavy), guided missile cruisers (only the United States and Russia have Ticonderoga class, while Russia has Glory class and Kirov class), guided missile destroyers, guided missile frigates, landing ships, amphibious assault ship, dock landing ships, supply ships, missile boats, conventional submarines, nuclear-powered attack submarines, strategic nuclear submarines, minesweepers, mine-laying ships, and medical treatment.