33 C.F.R. § 165.20 Safety zones.
Title 33 - Navigation and Navigable Waters
A Safety Zone is a water area, shore area, or water and shore area to which, for safety or environmental purposes, access is limited to authorized persons, vehicles, or vessels. It may be stationary and described by fixed limits or it may be described as a zone around a vessel in motion.
Title 33: Navigation and Navigable Waters
PART 165—REGULATED NAVIGATION AREAS AND LIMITED ACCESS AREAS
Subpart C—Safety Zones
§ 165.20 Safety zones.