The requested vessel with name CPO A4 and MMSI:205499401 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
CPO AUSTRALIA 9443140 235084179 SAN FRANCISCO Feb 21, 2018 04:13 UTC
CPO-A1 N/A 205499391 Sep 09, 2016 10:00 UTC
CPO-A7 N/A 205499392 Sep 09, 2016 10:06 UTC

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