HMNB Portsmouth is a major naval base located in Portsmouth, England. It serves as the home port for the Royal Navy and plays a crucial role in supporting naval operations. The base has facilities for ship maintenance, training, and logistics, making it an essential hub for maritime defense. Established in the 18th century, HMNB Portsmouth has a rich history and has been involved in numerous significant naval events. The base is also home to several historic ships, including the HMS Victory, which is famous for being the flagship of Admiral Nelson during the Battle of Trafalgar.