A doco I watched a while back suggested they could have used seal blubber and oil lamps as a source of heat to melt ice for water. The boat would be hauled ont

A doco I watched a while back suggested they could have used seal blubber and oil lamps as a source of heat to melt ice for water. The boat would be hauled onto the ice and turned upside down to form a shelter in remote spots. Fishing and hunting for seals would have provided the food as they went.