Generally, as soon as possible (and always within 24 hours) after arrival in port, and where there may be cargo damage, before breaking bulk (commencing discharge from the relevant hold or tank).
Whereas a possessory lien depends on possession of property, a maritime lien does not depend on possession and is not extinguished by transfer of title in the property to a bona fide purchaser who is not notified of the lien's existence. A maritime lien can therefore "travel with the ship" to which it attaches, and is not lost through a change of ownership.
(1)A 72-hour pre-arrival notification to the port State control authority for ships eligible for expanded inspection (i. e. ships with a High Risk Ship (HRS) profile and all passenger ships, oil tankers, gas carriers, chemical tankers and bulk carriers older than 12 years); and (2) a 24-hour pre-arrival notification to the port State control authority for all ships. (For details see Paris MoU region pre-arrival notifications, below. )