Michael Moorcock 
Ice Schooner 

The world lay frozen under a thousand feet of ice. Only in the Eight Cities of the Matto Grosso did men still live, hunting the wary ice whales for meat and oil, and following the creed of the Ice Mother which foretold the end of all life in ultimate cold.But legend told of a city far to the north – fabled New York – whose towers rose above the ice, whose crypts held the forgotten lore that might bring warmth to Earth once again. In the best ice ship in the Eight Cities, Konrad Arflane embarked on the impossible voyable to New York – an odyssey of incredible peril and adventure with a shattering discovery at the journey’s end…