33 CFR 150.320 - What advisories are given to tankers?
A manned deepwater port's person in charge of vessel operations must advise the master of each tanker underway in the safety zone or area to be avoided of the following:
(a) At intervals not exceeding 10 minutes, the vessel's position by range and bearing from the pumping platform complex; and
Title 33 published on 2014-07-01
no entries appear in the Federal Register after this date.