Ship timber from the Baltic with a special emphasis on wood from Old Prussia and Poland

Many dendrochronological analyses of shipwrecks in Europe indicate that timber from Prussia was used for shipbuilding far from its point of origin. This suggests that the export of timber for shipbuilding to Western Europe was very important, especially in a period from the 14th to the 17th century. But how can we identify such products and in what quality and quantity were they shipped? This short paper and the Timber Project at the University of Copenhagen in Denmark try to provide some answers.