The requested vessel with name KEISHO MARU NO18 and MMSI:0 and IMO:5123467 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
KEISHO MARU NO.1 N/A 431402069 >JP NWA Feb 22, 2018 18:37 UTC

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