Naval Base San Diego is the largest naval base on the West Coast of the United States, located in San Diego, California. It serves as the principal homeport for the U.S. Navy in the region, supporting various naval operations and housing numerous ships and submarines. Established in 1922, the base covers over 2,000 acres and provides essential services to the fleet, including maintenance, logistics, and training. It plays a crucial role in supporting the U.S. Pacific Fleet and contributes to national security and maritime operations in the Pacific region.