The requested vessel with name DAIRYU MARU and MMSI:0 and IMO:6816346 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
DAIRYU MARU N/A 431600622 Jul 05, 2017 07:38 UTC

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