Welcome to Naval Base San Diego Naval Base San Diego. This is one of the largest military installations within the United States Navy and is located in San Diego, California. Naval Base San Diego is the principal homeport of the Pacific Fleet, consisting of 50 ships and over 120 tenant commands. ADMINISTRATIVE POWERS [Owner Admin] Only Handed Out to USN HIGHCOM (VJCS+ ,MCPON) [Co-Owner] (NETC And NFFC Staff) [Admin] Only Handed Out to NETC [Mod] Only Handed Out to Fleet CO/XO NOTE: NON-MILITARY PERSONNEL ARE SUBJECTED TO SEARCH BY MASTER-AT-ARMS ENFORCEMENT OFFICERS. ENTERING THE PREMISES WITHOUT AUTHORIZATION WILL LEAD TO CONFINEMENT. [PROPERTY OF THE UNITED STATES NAVY]