A highly recommended book (and series for that matter). The only reason I haven't given it 5 stars, is that the comparison that springs to mind is George R. R. Martin's Clash of Kings. Hawkwood's Voyage offers the same in terms of scope but George Martin delivers more detail and deals will a larger cast. That said, this is a great and engrossing read and Paul Kearney delivers the story at breakneck speed. After reading this and the other books in the series, I'm amazed at how much he manages to pack into every chapter. So if you found Clash of Kings or the like a bit slow, add a star!
There are two main storylines in the series. The first deals with a clash of empires which parallels Europe's history enough to be familar (which helps the imagination fill in the details that Paul Kearney can't cover given the breakneck pace) but for me was the most gripping of the two tales. This is pretty much pure tactics and brute force; little scorcery creeps in.
If you like you fantasy, magic heavy, not to worry, Paul Kearney covers both bases. The "title" storyline involves a sea voyage undertaken by persecuted users of magic ... While this is the tale the title refers, it difficult to appreciate in just this single novel, as it plays a much larger role in the series.
This book and the rest of the series is worthwhile addition to your library!