From August 1941 convoys of merchant ships gathered in Scottish ports or at Reykjavik and crossed the Arctic Ocean carrying war materials and Red Cross supplies for the Russian cities of Murmansk and Archangel. Each voyage was a struggle for survival through treacherous seas, ice-packs, snowstorms, and the Arctic darkness. The sailors struggled against German bomber planes, U-Boats, and destroyers, as well as the battleship Tirpitz. To survive the sea crossing was just the beginning as they also had to survive the Arctic winter. Georges Blond recreates these voyages, and the heroism of the ships' crews, through official documents, ships' logs, and eye-witness testimony. He conveys the drama and feats of endurance that led Winston Churchill to describe the Arctic convoys as "the worst journey in the world."