The requested vessel with name KAIUN MARU and MMSI:0 and IMO:7651717 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
KAIUN MARU 9831452 431010749 >JP CHB S Feb 24, 2018 10:20 UTC
KAIUN MARU N/A 431002622 Feb 24, 2018 09:45 UTC

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