Prior to the twelfth century in northern Europe, ships were steered by a quarter-rudder, which was mounted on the rear side of the vessel. The use of the quarter-rudder persisted up until the fourteenth century in the Mediterranean. There, two quarter-mounted steering oars were used—a fact that has eluded many, even in the fields of maritime history.

Far exceeding anything ever before written on the subject, The Development of the Rudder endeavors to unravel the mysteries of the evolution of a vital piece of seafaring equipment. And in the process, Lawrence V. Mott answers far-reaching questions on why some technologies develop and endure, while others are soon replaced. In this first considered historical overview of the rudder, Mott begins his examination in the Roman period, and from there traces rudder development through the middle centuries to the age of exploratory navigation, by which time the quarter-rudder had been replaced by the pintle-and-gudgeon rudder. Throughout, he offers a thorough analysis of the mechanics of these rudder systems, while never losing sight of the human interest that attends the radical changes brought on by innovation.

With an interpretative eye, Mott examines classical and medieval art illustrating the rudder. This iconographic evidence is combined with the laws of modern hydrodynamics in order to render a more accurate description of rudder design and use during a given period. These conclusions are further depicted in finely rendered line drawings by the author.

The layperson will find in this unique work a penetrating look into the history of technology at sea—a history that defies the linear constructs often associated with developmental and evolutionary theory. Maritime historians, nautical archaeologists, and ship modelers will embrace this book as an invaluable reference, which includes useful appendixes filled with technical data for researchers and scholars.

Lawrence V. Mott received a B.A. from the University of California at Santa Barbara, a M.S. from the University of Wyoming, and an M.A. in anthropology with a specialization in nautical archaeology from Texas A&M University. As a member of excavation and field research teams, he has performed extensive studies on shipwrecks and medieval shipbuilding. He also has published numerous articles relating to nautical archaeology.

“Fascinating reading for those who seek a deeper understanding of the early origins of hte maritime industry. . . . For scholars in the field, this publication is particularly significant for it marks the establishment of a new monograph series, ‘Studies in Nautical Archaeology.’” --Journal of Maritime Law and Commerce

“This is an important contribution to our understanding of both the evolution of nautical technology and the processes by which technological development proceeds. . . .” --The Northern Mariner

“What might appear to be an unpromising exercise Lawrence Mott makes into a valuable and informative excursion into the history of technology and the history of ships in classical and medieval Europe. . . . This short book yields a good harvest for any reader.” --Sixteenth Century Journal

“The thorough analysis of side rudders’ shapes, construction methods, mounting systems, tackles, tillers, and handling creates a mass of information with sufficient illustrations for model builders interested in ships of those eras. . . . Everything he covers is clearly defined and explained.” --Nautical Research Journal

“Everything you would ever need to know about the development of the rudder is here in a most useful and pleasantly readable format.” --Seaways’ Ships in Scale

“Lawrence Mott has provided a fascinating and rich investigation of a key development in late medieval maritime technology. . . .” --Technology and Culture

“The Development of the Rudder sets a new standard for the study of rudder development, but it is about much more than just rudders!” --Mariner’s Mirror