Well written and laid out this is a great setting for Savage Worlds. This book provides all the details that you need to run a pirate game in the Caribbean, though can be easily used to expand throughout the world. The book contains all the rules, so no other book is required.
The book doesn't contain any information on introducing magic into the game should you decide, but since its Savage Worlds, its not hard to seal the magic rules from any of the other Savage Worlds settings. One of the things I like the most was fighting schools, which allows for defining your swashbuckling character even more.