The requested vessel with name FUJI MARU and MMSI:0 and IMO:5122437 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
FUJI MARU N/A 431001102 TOKYO Feb 19, 2018 20:34 UTC
FUJI MARU 9765794 431007274 JP SMA Oct 22, 2017 19:17 UTC

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