Science and imperialism: Setting the maritime sovereignty at the periphery of the French Empire through the survey of the Adriatic Sea (1806–1809)

At the beginning of the nineteenth century, the Adriatic was still insufficiently explored sea. The Napoleonic Wars (1803–1815), which in 1806 resulted in a territorial expansion of the French Empire to the eastern Adriatic (formerly part of the Austrian Empire), highlighted the issues of territorial sovereignty both on land and at sea, triggering the first hydrographic survey of the Adriatic. Napoleon Bonaparte, whose military operations were conducted precisely at sea, hired Charles François Beautemps-Beaupré, his best hydrographer, to conduct a hydrographic survey of the eastern coasts of the Adriatic. Conducted in the period 1806–1809, the survey resulted in the first modern hydrographic charts of the Adriatic that were accompanied by a hydrographic report, containing an analysis of its currents, winds, tides, and geomagnetism. Beautemps-Beaupré’s campaign was the first scientifically based survey of the Adriatic whose charts and the attached report represented a shift towards an all-encompassing convention of maritime cartography. It enhanced both the sovereignty over the newly acquired sea and the insight into the maritime theatre of the Napoleonic Wars, thus confirming a strong union between political power and science. The aim of the article is to show why the French survey was a turning-point in geographical knowledge on Adriatic and how French imperialism affected the knowledge on martime geography of the Adriatic Sea.