The Suisun Bay Reserve Fleet is located on the northwest side of Suisun Bay (the northern portion of the greater San Francisco Bay estuary). The fleet is within a regulated navigation area that is about 4 1/2 miles long and 1/2 mile wide. It begins just north of the Union Pacific Railroad Bridge and runs northeast, parallel to the shoreline {maps.google.com LINK]. Water depths range from about 14 meters (45 feet) at Mean Lower Low Water (MLLW) at the foot of the anchorage, to about 8 meters (26 feet) MLLW at the shallowest berths towards the northern end of the anchorage.