The requested vessel with name YUSEI MARU NO12 and MMSI:0 and IMO:6814465 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
YUSEI MARU NO.2 9742106 431006557 >JP HIJ OFF Feb 23, 2018 22:47 UTC

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