This was a completed manuscript found posthumously on Crichton's computer. It reads a bit like a first draft or outline, tho' it is fleshed out enough to be suitable material for a screenplay (which I believe is already underway). Except for the occasional historical or geographical note and some good information on sailing vessels & seamanship, the deep research Crichton is known for is missing. Nor does the story seem to have an agenda (another of Crichton's trademarks) other than to regale us with a swashbuckling tale of pirates and treasure, and all that might infer. It will make a good movie...