16th International Symposium on Boat & Ship Archaeology

36 16 th International Symposium on Boat & Ship Archaeology Elisa Costa & Carlo Beltrame Department of Humanities, Ca’ Foscari University, Venice, Italy Virtual reconstruction of the Roman Shipwreck Grado I from archive and legacy data Digital technologies support documentation and studies to increase and enhance knowledge about shipwrecks and maritime archaeology, allowing innovative ar- chaeological reconstruction and research, and, furthermore, permitting the ac- cessibility of the shipwreck to the public. As an action of the Interreg Italy-Croatia UnderwaterMuse project, that promotes a new kind of accessibility to a wider public through a digital approach of the underwater archaeological sites of the Adriatic Sea, the paper presents a 3D virtual model of the Roman shipwreck Gra- do I from archival and heterogeneous data, that could be studied and visualized with innovative solution and technologies. The wreck was discovered in 1986 and underwent numerous excavation campaigns which have seen the complete re- covery of the cargo and the hull; a large part of the hull was covered by the am- phoras and a section of the starboard side of the ship remained up to the height of the deck, that permit the reconstruction of a wide portion of the hull. The meticulous study of the hull and the cargo provided an opportunity to experiment the use of the documentation to reconstruct the entire shipwreck and provide to study and disseminate a complete visualization of an already investigated site which is no longer accessible. First, we have processed the data realized during the excavation, from 1990 to 1999, to obtain the 3D model of the in situ shipwreck; then, starting from in situ wooden elements and from the results of the study of the original hull lines realized in 2000, we have reconstruct the original shape of the boat and cargo, re- storing the missing parts of the boats from research carried out on archaeological and iconographic comparisons from this period. We are able to calculate the di- mensions and the tonnage, to understand the original disposition of the ampho- ras in one or two levels and to calculate the displacement and stability conditions.

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