The requested vessel with name CHANIA II and MMSI:0 and IMO:5204364 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
CHANIA III N/A 239734500 Jan 12, 2018 13:06 UTC

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