[Code of Federal Regulations] [Title 33, Volume 2] [Revised as of July 1, 2007] From the U.S. Government Printing Office via GPO Access [CITE: 33CFR165.20] [Page 641] TITLE 33--NAVIGATION AND NAVIGABLE WATERS CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PART 165_REGULATED NAVIGATION AREAS AND LIMITED ACCESS AREAS--Table of Subpart C_Safety Zones Sec. 165.20 Safety zones. 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.