Picked this up on the recommendation of my pal Paul and tore through it in about two days. One of the better entries in the crowded field of YA dystopian futures, for sure. There are a couple plot holes, but the book moves along at such a blistering pace that they're almost impossible to notice the first time through. The world-building was exceptional, and the setting is one I'd like to return to if Bacigalupi has another book in him.
Also, if you need one more bit to sell you on the book, Ship Breaker is essentially a pirate story. Although it's set in the future, the setting in coastal shantytowns and on the seas reads more like something from the Caribbean or the Barbary Coast of two centuries ago.