[Code of Federal Regulations] [Title 33, Volume 2] [Revised as of July 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 33CFR167.400] [Page 780] TITLE 33--NAVIGATION AND NAVIGABLE WATERS CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PART 167--OFFSHORE TRAFFIC SEPARATION SCHEMES--Table of Contents Subpart B--Description of Traffic Separation Schemes and Precautionary Areas Sec. 167.400 Off San Francisco Traffic Separation Scheme: General. The Off San Francisco Traffic Separation Scheme consists of six parts: a Precautionary Area, a Northern Approach, a Southern Approach, a Western Approach, a Main Ship Channel, and an Area to Be Avoided. The specific areas in the Off San Francisco TSS and Precautionary Area are described in Sec.Sec. 167.401 through 167.406 of this chapter. The geographic coordinates in Sec.Sec. 167.401 through 167.406 are defined using North American Datum 1983 (NAD 83).