It then became Thor Supplier. During this time it was extensively modified with the addition of an aft facing bridge structure and raised forecastle.
In 2012 Atlantic Towing Ltd acquired the boat and renamed it Atlantic Birch II. Initially it worked as a support vessel for seismic work off Greenland, but by 2013 it was back under Canadian flag and registered as Atlantic Tern. Paired with Atlantic Condor the boats are constantly shuttling to and from the Deep Panuke site, about 250 km southeast of Halifax. Atlantic Tern appears to spend more time in the standby role, leaving Condor for the heavier loads.
Atlantic Condor was built in 2010 by Halifax Shipyard for a ten year contract with Encana. Atlantic Tern may be working on similar terms. With the shutdown of the Deep Panuke field and its 175 km long pipeline to shore, it is expected to take until 2021 to plug the wells, and remove the topsides production structure. The pipeline will be abandoned in place. So it seems there will be work for Atlantic Tern for a few more years.