The requested vessel with name RIDA and MMSI:0 and IMO:6813538 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
RIDAGA 8505410 620028000 NOUADHIBOU Jan 10, 2017 17:33 UTC
RIDALA 8725943 276299000 DIRHAMIBOUND Oct 15, 2017 18:06 UTC

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