After studying law in Kiel, Germany, and Copenhagen, Denmark, Dr. Jessen received a Law degree from Christian-Albrechts-Universität Kiel, Germany, in 2002. He then worked as a researcher for one year at the Institute of International Affairs at the Law Faculty of the University of Hamburg. In 2003-2004, he undertook postgraduate studies as a scholar of the German-American Fulbright Commission at Tulane University, New Orleans, receiving the LL.M. degree in Maritime Law & Admiralty. In 2005, he finished his Ph.D.