(a)The danger zone. A circular area with a radius of 500 yards having its center on Shag Rock in the vicinity of Duck Island at latitude 43°00′12″, longitude 70°36′12″.
(1)No person or vessel shall enter or remain in the danger zone from 8:00 a.m. to 5:00 p.m. (local time) daily, except as authorized by the enforcing agency.
(2)This section shall be enforced by the Commandant, First Naval District, and such agencies as he may designate.