The requested vessel with name OCEAN ACE and MMSI:0 and IMO:8300418 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
OCEAN ACE 9123946 440145840 YEOSU Dec 13, 2017 19:19 UTC
OCEAN ACE 9303027 566926000 ID TPP Nov 03, 2017 15:53 UTC
OCEAN ACE N/A 441024000 PUSAN Aug 07, 2017 07:09 UTC

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