The bodies of the sailors were discovered on the coastline of a village in Lyuga at 1.30 p.m. local time (12.30 a.m. GMT), the spokeswoman said. According to preliminary information, all the men died of hypothermia.
One more crew member is still missing, added the spokeswoman. The search operation, involving a rescue ship and a helicopter, is continuing.
The Kvartz self-propelled barge, loaded with frozen fish, was en route from the port of Okhotsk to the town of Vanino, in the Khabarovsk Region, when it sent out a distress call early on Tuesday morning. A helicopter was immediately dispatched to the scene.
The shipwrecked vessel has been located, and there are no reports of a fuel leak.
It was earlier reported that a total of seven crew members had been on board the barge.