The requested vessel with name BLUE MISTRESS and MMSI:235018717 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
BLUE MISTRESS N/A 235039754 Oct 25, 2017 15:06 UTC
BLUE MISTRESS N/A 512003467 May 29, 2017 10:49 UTC

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