The second half made this book for me, when Moby (known here as Whitewave) really comes into his own as a character and follows a vengeance quest that is similar to Ahab's in quite a few ways, and yet differs in at least one crucial way; Whitewave's revenge is justified, while Ahab's revenge is not. 

The dialogue felt a little clunky at times, and there was quite a bit of telling rather than showing in the prose itself, but the concept and story is such a fresh spin on Melville's mythology that this is easy to recommend to Moby Dick fans, even as a curiousity.