Economy of San Diego

lang="EN-US">San Diego hosts the largest naval fleet in the world: it was in 2008 was home to 53 ships, over 120 tenant commands, and more than 35,000 sailors, soldiers, Department of Defense civilian employees and contractors. About 5 percent of all civilian jobs in the county are military-related, and 15,000 businesses in San Diego County rely on Department of Defense contracts.

Military bases in San Diego include US Navy facilities, Marine Corps bases, and Coast Guard stations. Marine Corps institutions in the city of San Diego include Marine Corps Air Station Miramar and Marine Corps Recruit Depot San Diego. The Navy has several institutions in the city, including Naval Base Point Loma, Naval Base San Diego (also known as the 32nd Street Naval Station), Naval Medical Center San Diego (also known as Bob Wilson Naval Hospital), the Space and Naval Warfare Systems Center San Diego, and Space and Naval Warfare Systems Command ("SPAWAR"). Also near San Diego but not within the city limits are Naval Amphibious Base Coronado and Naval Air Station North Island (which operates Naval Auxiliary Landing Facility San Clemente Island, Silver Strand Training Complex, and the Outlying Field Imperial Beach). San Diego is known as the "birthplace of naval aviation".

The city is "home to the majority of the U.S. Pacific Fleet's surface combatants, all of the Navy's West Coast amphibious ships and a variety of Coast Guard and Military Sealift Command vessels". Two Nimitz class supercarriers, (the USS Carl Vinson, and USS Ronald Reagan), five amphibious assault ships, several Los Angeles-class "fast attack" submarines, the Hospital Ship USNS Mercy, carrier and submarine tenders, destroyers, cruisers, frigates, and many smaller ships are home-ported there. Four Navy vessels have been named USS San Diego.