The requested vessel with name GREEN OCEAN 1 and MMSI:0 and IMO:8307961 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
GREEN OCEAN 1 8631697 419000915 HAVELOCK Mar 20, 2016 02:36 UTC

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