The requested vessel with name BYZANTION and MMSI:0 and IMO:7413658 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
BYZANTION 9315898 240635000 SI KOP>RU TUA Feb 23, 2018 17:25 UTC

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