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).
“+”(properly called a Pattee cross but often called a Maltese cross) means the ship was constructed under survey by Lloyd's Register surveyors; "100" means the ship is suitable for seagoing service. "A" means the ship was constructed or accepted into LR class and is maintained in good and efficient condition. "1"means she has good and efficient anchoring and mooring equipment.
Where a port State authority requires that specific ballast water procedures and/or treatment option(s) be undertaken, and due to weather, sea conditions or operational impracticability such action cannot be taken, the master should report this fact to the port State authority as soon as possible and, where appropriate, prior to entering seas under its jurisdiction. (BWM Guidelines, 8.1.1)
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.