This book responds to the increasing interest of maritime historians in the study of ports. These enclaves offer significant insights into a variety of subjects, including ships and shipping; trade, commodities, and consumption patterns; the economy, society and culture of port workers and port communities; and systems of regional and international integration. Based on extensive research in a wide range of European archives, the book provides much detailon the nature of ports in the medieval period, especially on the crucial subject of the operation of ports. Covering a range of ports in France, Spain, Portugal and the Canary Islands, the book contains a wealth of original research findings. It will be particularly welcomed by English-speaking scholars and others outside the region analysed, since it gives access to non-English-language archives, thereby considerably enriching the study of medieval portsbeyond ports in Britain and Ireland.