The requested vessel with name HORYU MARU and MMSI:0 and IMO:6414289 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
HORYU MARU N/A 431000357 JP HKT Dec 13, 2017 23:14 UTC
HORYU MARU N/A 431001133 Dec 11, 2017 14:24 UTC

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