The Six Crowns: Sargasso Skies by Allan Jones

Allan Jones and Gary Chalk have created a magical steampunk world for their illustrated The Six Crowns books. In the Sundered Lands, animals talk, ships fly, and a set of ancient blocks can be used to tell fortunes.
 
Hedgehogs Trundle Boldoak and Princess Esmerelda and squirrel Jack Nimble continue their quest in Sargasso Skies, the fifth book in the series. To find the Crown of Wood, they’ll have to navigate a treacherous skyreef. And they’ll have to elude Captain Grizzlewald, a hog who leads a band of bloodthirsty pirates and is desperate to find the crowns of the Badger Lords himself.
 
The Six Crowns books, a funny fantasy-adventure series for tweens, will appeal to fans of the Geronimo Stilton and the Kingdom of Fantasy books.