The requested vessel with name CONQUEST 23 and MMSI:338185995 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
CONQUEST MB1 N/A 244810178 CAAN-A PLATFORM Feb 22, 2018 07:45 UTC
CONQUESTADOR II N/A 211160790 WARNEMUENDE Sep 07, 2016 13:13 UTC

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