Divers know that noting matches the mystery of an old shipwreck. But how do we solve that mystery? The artifacts are the clues to the type, size, age and even perhaps the identity of the vessel. This book describes the structures and fittings that made up the wooden sailing vessel of the 19th century with more than 50 drawings and 25 photographs to show how they look after decades on the seabed. Paperback, 94 pages.