The requested vessel with name OKLAHOMA and MMSI:205395190 and IMO:0 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
OKLAHOMA 9321964 308664000 SAN FRANCISCO Feb 23, 2018 08:20 UTC
OKLAHOMA N/A 366978430 Jan 18, 2018 16:31 UTC

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