33 C.F.R. § 161.20
Position Report (PR)
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.
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.