Security Zone: 33 CFR 165.1183 - The Coast Guard has established moving and fixed security zones, extending 100 yards around and under all cruise ships and tanker vessels, that enter, are moored in, anchored in, or depart from the San Francisco Bay, California and Delta ports. When a cruise ship and/or tank vessel approaches within 100 yards of a vessel that is moored, or anchored, the stationary vessel must stay moored, or anchored, while it remains within the cruse ships's and/or tank vessel's security zone, unless it is either ordered by, or given permission from the COTP San Francisco Bay to do otherwise. Entry can be authorized by the Captain of the Port of San Francisco Bay, at telephone number 510-437-3073 or VHF-FM channel 16 (156.8 MHz).