There is only one Cruising Guide for Belize, which is called
Cruising Guide to Belize and Mexico’s Caribbean Coast Including Guatemala’s Rio Dulce
By Captain Freya Rauscher
I believe the 3rd Edition is the latest edition.
Our recommendation though is that when reading through this book is for you to keep in mind that quite a bit of the information found here is very old, outdated and irrelevant, but being there is no other cruising guide available for Belize it is better than nothing at all.
Ventura Yacht Agency’s website is not a cruising guide book, but we would of course most definitely highly recommend it. It is packed with useful current information. I believe you will find that they both go together hand in hand.
Local knowledge is always the most current source of information.