The requested vessel with name ZUIKO MARU and MMSI:0 and IMO:7311020 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
ZUIKO MARU 9266217 431301612 >JP MIZ FT Oct 17, 2017 14:34 UTC
ZUIKO MARU N/A 431500104 >JP TKK OFF Nov 24, 2015 04:03 UTC

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