This is a well structured book that provides a one stop source of information on port of entry procedures among other thing. However with that said. I have just returned from the Leeward Islands and found the entry procedures have completely changed. No longer do you fly the Q flag and wait, but the skipper can proceed directly to customs and immigrations. This is no doubt due to the increased yacht traffic. So talk with other yachts going to or coming from your destination to get the latest information on entry and clearance information.