33 C.F.R. § 161.20 Position Report (PR).
Title 33 - Navigation and Navigable Waters
A vessel must report its name and position: (a) Upon point of entry into a VMRS area; (b) At designated reporting points as set forth in subpart C; or (c) When directed by the Center. [CGD 90–020, 59 FR 36324, July 15, 1994, as amended by USCG–2003–14757, 68 FR 39366, July 1, 2003]
Title 33: Navigation and Navigable Waters
PART 161—VESSEL TRAFFIC MANAGEMENT
Subpart B—Vessel Movement Reporting System
§ 161.20 Position Report (PR).