Four athletes who practiced "snowboard " survived three nights in a snow storm by building a makeshift igloo. A survival blanket , some food and shelter himself got to keep them alive . Due to a winter storm , a family of four ran aground while sailing . After 10 days without any sign of rescue teams , the father and the eldest son in a shelter decided to leave the two girls who accompanied them to go for help . As the snow was melting , they found a damaged skiff . Six days later, both suffered frostbite . Nevertheless , they managed to repair the boat and go back to the sea to recover the bodies of the two girls. Against all odds, the two were still alive . With some proper shelter and little food , the group was again in danger. Meanwhile , the owner of a cabin in which the man had left a note , contacted the Coast Guard. Hours later , the whole family was rescued