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
(b) The position and the estimated course and speed, if moving, of all other vessels that may interfere with the movement of the tanker within the safety zone or area to be avoided.