The requested vessel with name KOWA MARU and MMSI:0 and IMO:5322697 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
KOWA MARU 9041849 431500893 >JP TMK OFF Jan 21, 2018 06:23 UTC
KOWA MARU NO,3 9798600 431008542 JP HKS OFF Jan 22, 2018 11:50 UTC
KOWA MARU NO.8 9652636 431004009 >JP YOS Jan 23, 2018 08:40 UTC

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