33 CFR §165.708

1. (a)Regulated area. The following boundaries are established as a safety and security zone during specified conditions:
   1. (1)All waters 200 yards ahead and astern and 100 yards to each side of a vessel transporting nuclear materials while the vessel transits from Charleston Harbor Entrance approximate position (32°37.1′ N., 079°35.5′ W.) to the Charleston Naval Weapons Station (position 32-55.4N, 079-56.0W) on the Cooper River. All coordinates referenced use datum: NAD 1983.
   2. (2)All waters within 100 yards of the vessel described in paragraph (a)(1) of this section while the vessel is conducting cargo operations at the Charleston Naval Weapons Station.
2. (b)Captain of the Port Charleston will announce the activation of the safety/security zones described in paragraph (a) of this section by Broadcast Notice to Mariners. The general regulations governing safety and security zones contained in §§ 165.23 and 165.33 apply.