The seas of northern Europe are probably the most heavily travelled in recent millenia, and there are literally thousands of wrecks lying in what is relatively shallow water. Among these, a significant proportion may be regarded as high-value - either in financial terms or because of their potential contribution to historical knowledge - but few have been precisely located. This book identifies 500 such sites, giving concise details of ship, voyage, cargo and current state of knowledge. This represents a large proportion of the most valuable wrecks in the designated area. The book is also introduced by twenty detailed case-studies of wrecks chosen to illustrate the range of problems - and rewards - likely to be encountered by anyone diving on these sites. These include a variety of ship types, from a Roman trading vessel to a German liner sunk in the Baltic by the Russians in 1945. Well written and heavily illustrated, this book is both a practical guide for divers and an entertainment for armchair adventurers.