The requested vessel with name GULF COAST and MMSI:0 and IMO:5385223 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
GULF COAST N/A 367098070 HONEYWELL FRANKFORD Feb 22, 2018 21:40 UTC
GULF COAST 9298674 309977000 BRISBANE AUS Feb 20, 2018 01:36 UTC
GULF COAST RESPONDER 9044645 366598000 GB 128 Feb 22, 2018 21:40 UTC

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