181707 Brightstorm: A Sky-Ship Adventure (Paperback) By Hardy, Vashti

Twins Arthur and Maudie receive word in Lontown that their famous explorer father died in a failed attempt to reach South Polaris. Not only that, but he has been accused of trying to steal fuel from his competitors before he died! The twins don't believe the news, and they answer an ad to crew a new exploration attempt in the hope of learning the truth and repairing their family's reputation. As the winged ship Aurora sets sail, the twins must keep their wits about them and prove themselves worthy of the rest of the crew. Will Arthur and Maudie find the evidence they need to prove their father's innocence? And can one-armed Arthur discover where he fits in the world?