A naval ship is a watercraft designed for naval warfare and operations. These ships are equipped with advanced technology and weaponry to protect a nation's interests at sea. They can vary in size and function, including aircraft carriers, destroyers, and submarines, each serving a specific role in military strategy. Naval ships are often part of a larger fleet, which may include support vessels and supply ships. They operate under the command of a nation's navy, such as the United States Navy or the Royal Navy, and are essential for maintaining maritime security and conducting missions around the world.