The requested vessel with name KEIYO MARU and MMSI:0 and IMO:6408682 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
KEIYO MARU N/A 431501371 Feb 20, 2018 10:42 UTC
KEIYO MARU 9426544 431000275 >JP KWS DU/NNX Feb 20, 2018 10:41 UTC
KEIYO MARU N/A 431501847 Feb 18, 2018 14:27 UTC
KEIYO MARU NO.15 N/A 431010346 JP KNM OFF Feb 20, 2018 10:43 UTC
KEIYO MARU NO.8 9715907 431005858 >JP NGO N3 Feb 20, 2018 10:43 UTC

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