Edge Chronicles 5: Stormchaser, Paperback/Paul Stewart

The second book of the Twig Saga, part of the bestselling Edge Chronicles series.     Twig has always longed to explore the skies of the Edge. Now, as a crew-member of the Stormchaser, he is finally living that dream. The ship's quest is to collect stormphrax -- a valuable substance created inside the heart of a Great Storm, at the very instant it unleashes its most intense power. But can their ship survive such a destructive force?