This book is very comprehensive. Ideal for perfecting his general technical sailing. The council are generally clear, although it is sometimes useful to reread paragraph or see some more clarity is not total. The illustration is of very good quality and well illustrate the point. The division of information is very relevant with a double page devoted to each subject. A little regret at the layout of some pages or binding poorly cut beautiful illustration. A book to buy without hesitation to revise the classics and deepen some points.