Royal Navies are the naval forces of a monarchy, responsible for protecting a nation's maritime interests and ensuring national security at sea. They typically operate a range of vessels, including aircraft carriers, submarines, and destroyers, and are involved in various missions such as defense, humanitarian aid, and maritime law enforcement. One of the most well-known examples is the Royal Navy of the United Kingdom, which has a rich history dating back to the 16th century. Other countries with royal navies include Norway and Thailand, each serving to uphold their respective national interests and contribute to international maritime operations.