First, the good: The plot was good enough to goad me to continue reading, if only to see how it might develop. The premise is interesting, if not compelling, but the "fallen humans rediscovering their heritage" theme was MUCH better done in Dan Simmons' "Illium/Olympos" duology.
The bad: The EDITING IS HORRIBLE!! Failures of conjugation, tense, incorrect homonyms ("to" instead of "two", etc), and even character names that keep changing ("Big Momma" becomes "Big Mommy" multiple times). I found this so distracting that I almost had to put the book down. The characters are cardboard, with only the protagonist experiencing any growth at all. Unfortunately, that "growth" is incredible--as in there's little credible reason to believe he would develop in the manner described by the mechanisms presented. We are expected to believe that learning to read and re-discovering some basic principles of hydrodynamics, aerodynamics and engineering (with an interest in "law" as well) suddenly turn a simple sailor into a respected leader of men--with no real objections from the community at large. The antagonists are laughably simple, and the leader of the "bad guys" reminds me of Carnegie from "The Book of Eli" (he wants the ancient technology to better rule his "empire"), only without any charm or wit. The book climaxes and concludes far too abruptly and conveniently, as though the author were eager to move on to the next novel--which I suspect he was.
Bottom line: You get what you pay for. As this was a free novel, I can honestly say I got my money's worth--and I enjoyed reading it in the same manner that I enjoy watching "B" or even "C" movies. That is, being able to mock the book for its failings was at least as entertaining as the book itself. I will not, however, waste my dollars buying the sequels.