The Coast Guard will enforce special local regulations for the Charleston Race Week in Charleston, SC, to provide for the safety of life on navigable waterways during this event. Our regulation for marine events within the Captain of the Port Charleston identifies the regulated area for this event in Charleston, SC. During the enforcement period, no person or vessel may enter, transit through, anchor in, or remain within the designated area unless authorized by the Captain of the Port Charleston (COTP) or a designated representative.
Source: Federal Register USCG
Link: Special Local Regulations; Marine Events Within the Captain of the Port Charleston