The Dragon Round by Stephen S. power- Paperback

Jeryon has been the captain of the Comber for more than a decade. He knows the rules. He likes the rules. But not everyone on his ship agrees. After a monstrous dragon attacks the galley, the surviving crew members decide to take the ship for themselves and give Jeryon and his self-righteous apothecary "the captain's chance": a small boat with no rudder or sails, and no amenities save for the clothes on their backs to survive in the open sea.

Fighting for their lives against the elements, Jeryon and his companion land on an island that isn't as deserted as they originally thought. They find a baby dragon that, if trained, could be their way home. But as Jeryon and the dragon grow closer, the captain begins to realize that even if he makes it off the island, his old life won't be waiting for him. In order to get justice, he'll have to take it for himself.