The requested vessel with name KOYU MARU and MMSI:0 and IMO:7002801 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
KOYU MARU 9712242 431005964 >JP ONX Feb 17, 2018 20:33 UTC

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