The megas doux was also appointed as overall governor of southern Greece, the old themata of Hellas and the Peloponnese, which were divided into districts (oria) that supplied the fleet.
Der megas doux war gleichzeitig Gouverneur des südlichen Griechenland, dem Gebiet der alten Themata Hellas und Peloponnes, die in Distrikte (oria) unterteilt waren, welche die Flotte versorgten.