33 C.F.R. § 167.3 Geographic coordinates.
Title 33 - Navigation and Navigable Waters
Geographic coordinates are defined using North American 1927 Datum (NAD 27) unless indicated otherwise. [CGD 90–039, 59 FR 21937, Apr. 28, 1994]
Title 33: Navigation and Navigable Waters
PART 167—OFFSHORE TRAFFIC SEPARATION SCHEMES
Subpart A—General
§ 167.3 Geographic coordinates.
