The requested vessel with name SALVAGE CHIEF and MMSI:0 and IMO:5308251 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
SALVAGE CHIEF N/A 366766530 AWAITING;ORDERS Feb 17, 2018 21:31 UTC

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