%L theses_frw930 %X Increasing human activities in our sea’s and oceans require an integrated and sustainable spatial planning framework at sea. Maritime spatial planning (MSP) aims at reducing spatial conflicts while simultaneously focusing on a sustainable marine environment. Current MSP practice is often executed on national -, regional- and/or local level with little transnational joint planning or - decision-making. A Southwest Baltic Sea assessment illustrates the obstacles and possibilities in governance structures regarding transnational cooperation and might set a benchmark for MSP issues in the future. %A L. Katuin %T A Maritime Spatial Planning Expert for One Day %D 2018