Maritime Historian
Nautical Archaeologist
10058 Huntsman Path
Pensacola, FL 32514


Maritime trade and technology have been a driving force in globalization since the High Middle Ages and research interests encompass the development of maritime technology, and the social and economic forces that drive it. I am currently finishing a book on mine warfare and warship losses during World War I. I am also participating in the NorFish Project which is a study of fishing and fisheries in the North Atlantic during the Early Modern Period

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Academic Degrees

  • University of Minnesota: Ph.D. in Medieval History (degree granted September 30, 1999).
  • Texas A&M University: Master of Arts in Anthropology, Nautical Archaeology Program (1991).
  • University of Wyoming: Master of Science degree in Geology (1978).
  • University of California at Santa Barbara: Bachelor of Arts degree in Geology (1976).


  • Sea Power in the Medieval Mediterranean: The Catalan-Aragonese Fleet in the War of the Sicilian Vespers.(Gainesville: University Press of Florida, 2003)
  • The Development of the Rudder: A Technological Tale. (College Station, Texas: Texas A&M Press; London: Chatham Publishing, 1996)

«Read reviews of these books»



  • Travellers, Merchants and Settlers in the Eastern Mediterranean, 11th – 14th Centuries. Jacoby, David. In International Journal of Maritime History 26 (December 2014): In Press.
  • Norman Naval Operations in the Mediterranean. Stanton, Charles D. In The NorthernMariner/le marin du nord.23.2 (2011): 435-436.
  • The World of the Medieval Shipmaster: Law, Business and the Sea, c.1350-1450. Ward, Robin. In International Journal of Maritime History 21.2 (December 2009): 335-40.
  • Age of the Dromon: The Byzantine Navy 500-1204. Pryor, John H. and Elizabeth M. Jeffreys. In Medieval Encounters Special Edition 13.2 (2007): 376-8
  • Amphibious Warfare 1000-1700: Commerce, State Formation and European Expansion. Trim, D. J. B. and Mark Charles Fissel (editors). In Sixteenth Century Journal 28.3 (2007): 791-2
  • Crescent and Cross: The Battle of Lepanto 1571, by Hugh Bicheno. In International Journal of Maritime History, (December 20040: 408-10
  • The Barbary Corsairs: Warfare in the Mediterranean, 1480-1580, by Jacques Heers, trans. Jonathan North. In International Journal of Maritime History, (June 2004): 292-294
  • The Norman Conquest of Southern Italy and Sicily, by Gordon S. Brown. In De Re Militari (September 2003).
  • Medieval Ships and Shipping, by Gillian Hutchinson. In Sixteenth Century Journal 27.1 (1996): 208-210
  • The Pilgrim's Guide to Santiago Compostela, by Shaver-Crandell, Annie and Paula Gerson. In Paregon 14.1 (1996): 307-309
  • Les Sorres X: Un Vaixell Medieval al Canal Olimpic de Rem, by X. Raurich, M, Pujol et al. In International Journal of Nautical Archaeology 24.1 (1995): 79

Other Professional Activities

  • Chair and Commentator for Medieval Navies Session at the 2007 Naval History Symposium at Annapolis, Maryland (September 19 - 22, 2007)
  • Relief work in the Tamu Nadal State of India following the December 2004 tsunami disaster. Advised the TK Foundation concerning the replacement fishing boats for those lost in the tsunami. February 10-19, 2005
  • Field reconnaissance at Tranquebar, India for future marine archaeology survey of the port and anchorage. February 2005
  • Guest lecturer for the Texas A&M University Studies Aboard Program at Castiglion Florentino and Venice, Italy. Lectures: "Byzantium in Italy"; "Genoa and Venice: A Tale of Two Cities"; "The Arsenale of Venice" (October 5-15, 2004)
  • History of Marine Animal Populations (HMAP) Mediterranean workshop at the Institut de Ciències del Mar. (Barcelona: September 20-22, 2004)
  • Guest of the Royal United Services Institute for the Maritme Power in the 21st Century conference. (Whitehall, London: May 19-20, 2004)
  • Guest Lecturer for "Traders, Crusaders, Ambassadors." Course # L225, University of Indiana. (March 26 - 28, 2001)