This book is great for novice designers who want to use pencil and paper or Computer Aided Design. Most of the maths has been replaced by simple rules of thumb. It is equally useful for boat owners who want to modify the hull, rig, deck layout or accommodation. It is invaluable to boat buyers who want to ask questions like: How will she sail?; How much will she cost?; How easy is it to change things? and How can I reduce or increase sail area without upsetting the balance?. So, if you are any of the above, or simply have an interest in yacht design, this is the book for you!