A military vessel is a type of ship or boat specifically designed for naval warfare and defense operations. These vessels can include aircraft carriers, submarines, destroyers, and frigates, each serving unique roles in a navy's fleet. They are equipped with advanced technology and weaponry to protect national interests and conduct missions at sea. Military vessels are operated by naval forces, such as the United States Navy or the Royal Navy. They play crucial roles in maintaining maritime security, conducting surveillance, and supporting ground forces during conflicts. Their presence can also serve as a deterrent against potential threats.