Sakhalin Energy
In 2012, the Swedish Maritime Administration agreed to end the charter for "Vidar Viking" prematurely for the 2011–2012 Baltic Sea icebreaking season and all subsequent seasons. The vessel then provided icebreaking services for the Estonian Maritime Administration for one winter season before heading to Sakhalin where she provided icebreaking, supply and anchor handling services starting from summer 2012 for Sakhalin Energy Investment Company Limited. After six months, she was reflagged to Russia and her crew changed to Russians. "Vidar Viking" was reflagged to Danish International Register of Shipping in 2016 and to Norway in 2017.