The requested vessel with name SEFER and MMSI:0 and IMO:5317422 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
SEFER GARIP N/A 271041094 Feb 15, 2018 00:34 UTC
SEFER KAPTAN-1 N/A 271042945 Jan 18, 2018 11:27 UTC
SEFERINO N/A 235093928 Oct 21, 2017 11:30 UTC

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