The requested vessel with name PETIR 11 and MMSI:533987655 and IMO:0 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
PETIR 12 N/A 533966004 I Jun 21, 2017 00:39 UTC

Also, you may try to find the vessel in our comprehensive Vessels Database or track this ship on the map.