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This paper describes a suite of automated tools to produce underwater georeferenced cartographic data that includes archaeologically relevant information. The automated data-processing methodology includes data acquisition, building a 3D model of the site and the final virtual-reality rendering. This paper outlines the methodology developed, with the exception of the final step, and describes results of this approach from the Pianosa 2006 mission, which was part of the European Union Project VENUS (Virtual ExploratioN of Underwater Sites). The data-acquisition system includes a Remotely Operated Vehicle (ROV) to collect optical data for photogrammetric processing. The optical data are geo-referenced through the use of an acoustic positioning system. The optical images and ROV navigation data are saved on-line. The optical data are processed off-line through standard photogrammetric techniques to obtain a 3D Digital Terrain Model (DTM). Archaeological artifacts at the site are identified on the DTM, and 3D virtual models of the objects are inserted into the final representation. Metadata, including the sequential processing steps to obtain the virtual model of the artifacts, are stored in a purpose-built data-base system. Evaluation of archaeologists regarding use of the final cartographic instrument must take into account the accuracy in the 3D model reconstruction.