Over the weekend, I finished Pirate Latitudes, the posthumous novel by Michael Crichton.

Pirate Latitudes, and another novel, were found as completed manuscripts on Crichton's computer after his death.   I don't think it is known why it wasn't published - if it was held back for a reason or just hadn't reached publishing.

It's a good novel, more similar to his earlier works like The Great Train Robbery, than his later techno thrillers.  The first few chapters are a little annoying as they constantly and blatantly throw in facts about the time when the novel is set to correct assumed misconceptions in the readers.  After that, it settles down into a nice nautical tale of English versus Spanish in the New World.