33 CFR § 165.116 - Safety and Security Zones; Salem and Boston Harbors, Massachusetts.
(a) Location. The following areas are permanent safety and security zones:
(1) Reserved Channel, Boston Harbor. All waters of Boston Harbor within one hundred fifty (150) yards off the bow and stern and one hundred (100) yards abeam of any vessel moored at the Massachusetts Port Authority Black Falcon Terminal;
(2) Boston Inner Harbor. All waters of Boston Harbor within one hundred (100) feet of the Coast Guard Integrated Support Command (ISC) Boston piers and;
(3) Salem Harbor. All waters of Salem Harbor within a two-hundred and fifty (250) yard radius of the center point of the PG & E Power Plant Terminal Wharf, Salem, MA, located at 42°31.33′ N, 070°52.67′ W when a vessel is moored at this pier. All coordinates are North American Datum 1983.
(b) Regulations.
(1) In accordance with the general regulations in § 165.23 and § 165.33 of this part, entry into or movement within these zones is prohibited unless authorized by the Captain of the Port Boston.
(2) All vessel operators shall comply with the instructions of the Captain of the Port or the designated on-scene U.S. Coast Guard patrol personnel. On-scene Coast Guard patrol personnel include commissioned, warrant, and petty officers of the Coast Guard on board Coast Guard, Coast Guard Auxiliary, local, state, and federal law enforcement vessels.
(3) No person may enter the waters or land area within the boundaries of the safety and security zones unless previously authorized by the Captain of the Port, Boston or his authorized patrol representative.