This collection of essays and articles from a wide range of journals is intended to make more accessible to students and scholars some of the most important writing in English in this field from the 1950s to the present day. The volume draws attention to work on both the design and the use of ships in warfare in the period c.1000-c.1500. The collection deals with both the Mediterranean and northern waters in this period and not only makes clear what work has been done in this field but indicates areas where more research is needed.