The requested vessel with name BULGARIA and MMSI:0 and IMO:5054965 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
BULGARIA 9404431 248700000 DILISKELESI Oct 17, 2017 13:20 UTC

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