The requested vessel with name NEOPETRO 12 and MMSI:533170159 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
NEOPETRO 20 9669964 533170081 E11 Oct 11, 2016 17:34 UTC
NEOPETRO 7 9495882 533000746 MIRI Mar 24, 2016 12:20 UTC

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