A very compact book with waterproof cover makes it ideal to have on the boat or around the water. The first half contains the rules of sailing. The second half contains short examples which correspond by page numbers to rules in the first half of the book. It also comes with a plastic set of boats and marks so you are ready to present your case to any jury or your fellow sailors at after race socials. (Note: The current edition, not pictured, covers the rules through 2012.)