The paper summarizes the main results achieved during the three-year European FP7 ARROWS project(ARchaeological RObot systems for the Worlds Seas).ARROWS concluded at the end of August 2015 and proposed to adapt and develop low-cost Autonomous Underwater Vehicle(AUV)technologies to reduce the operational cost of typical underwater archaeological campaigns.The methodology used by ARROWS researchers identified archaeologists requirements for all the phases of a campaign.These were based on guidelines issued by the project Archaeology Advisory Group(AAG),which comprised of many European archaeologists belonging to the consortium.One of the main goals of the ARROWS project was the development of a heterogeneous team of cooperating AUVs;these comprised of prototypes developed in the project and commercially available vehicles.Three different AUVs have been built and tested at sea: MARTA,characterized by flexible hardware modularity for easy adaption of payload and propulsion systems,U-C AT,a turtle inspired bio-mimetic robot devoted to shipwreck penetration and A-Size AUV,a small light weight vehicle which is easily deployable by a single person.The project also included the development of a cleaning tool for well-known artefacts and maintenance operations.Results from the official final demonstrations of the project,held in Sicily and in Estonia during Summer 2015,are presented in the paper as an experimental proof of the validity of the developed robotic tools.
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