The requested vessel with name POLAR PIONEER and MMSI:0 and IMO:5028265 is temporary not in our database.
Perhaps you mean one of the following ships:

Vessel name IMO MMSI In range Destination Last report
POLAR PIONEER 9202675 258962000 TROMSO Feb 14, 2018 17:17 UTC
POLAR PIONEER 8010324 273454860 AITCHO.IS Jan 31, 2018 00:45 UTC
POLAR PIONEER 8754140 538003659 Mar 29, 2016 08:35 UTC

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