The requested vessel with name SHELF and MMSI:0 and IMO:7630062 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
SHELF ACHIEVER N/A 368502516 Feb 20, 2018 10:38 UTC
SHELF EXPRESS 8521531 219433000 EMDEN Feb 20, 2018 10:37 UTC

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