Recent archaeological work in the submerged ruins of the Roman port of Puteoli has identified a 1st-century building identified as a 'Nautical Mapping Studio'. The structure, located near the ancient harbor’s lighthouse, contained marble tables with etched grid lines and several bronze topographical calculation tools used for charting safe shipping lanes through the volcanic coastline of the Bay of Naples.
This discovery is the first of its kind, offering a rare glimpse into the scientific infrastructure that supported Rome’s maritime dominance. The presence of precision instruments suggest that Roman navigators used more advanced mathematical surveying techniques than previously assumed to map the seabed and manage the heavy traffic of the grain fleets.