EN
The work of Emperor Constantinos Porphyrogenetos De Administrando Imperio is an extremely important source for the history of Central and East Europe. We find that, it also provides information about top executives, commanding the naval forces of the Byzantine Empire, at the turn of the ninth and tenth centuries. Based on data contained in the DAI, we are able to trace the facts concerning the actions of people associated with the Byzantine Navy at the beginning of the reign of the Macedonian dynasty, as well as in which kind of ships and boats was equipped the squadron of Navy subordinate to the emperors.