The requested vessel with name MARIA DOLORES and MMSI:0 and IMO:7813078 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
MARIA DOLORES 9333448 215883000 TARIFA..TANGER Oct 24, 2017 09:41 UTC
MARIA DOLORES N/A 227359670 Jul 31, 2017 14:24 UTC
MARIA DOLORES I N/A 345840168 Apr 03, 2016 03:05 UTC

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