The requested vessel with name GREENLAND SEA and MMSI:0 and IMO:5131086 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
GREENLAND SEA 9032783 367361020 HOUSTON TX Feb 21, 2018 09:33 UTC

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