Review Author: Pat Rains Mexico Boating Guide covers both coasts of Baja, all of the Sea of Cortez (not limited to just the main cruiser hang-outs) and all the mainland - Mazatlan, Puerto Vallarta, Gold Coast, Zihuatanejo, Acapulco, Huatulco, right down to the Guatemala border. You have to download the most current UPDATES from the book's website, but they're free and updated frequently. Good value, all GPS accurate, lots of charts of critical anchorages that are way to tiny to appear with sufficient accuracy on the government charts.