From 15th September to 26th October 2007 BGR together with the German Alfred-Wegener Institute for Polar and Marine Research (AWI), Bremerhaven, the French Institutes from Brest Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) and Institut Polaire Français Paul-Emile Victor (the French Polar Institute, IPEV) and the Portuguese Institute Laboratório de Tectonofísica e Tectónica Experimental (LATTEX) conducted a marine geophysical research cruise on the French research vessel R/V MARION DUFRESNE. The cruise BGR07 MoBaMaSis consisted of two legs MD163 off Central Mozambique and MD164 off Southern Mozambique. The main research objective was to contribute to a better understanding of the initial breakup and the early opening of the Eastern Gondwana.