Precision Survey and Archaeological Methodology in Deep Water

New technologies allow archaeologists to explore the human past in the depths of the ocean, far beyond the 50 meter depth boundary set by SCUBA diving. Using robots and advanced sensors originally developed for other applications, social scientists now are following the path of marine scientists, adapting deep submergence technologies for their own research. Remotely Operated Vehicles (ROVs) and Autonomous Underwater Vehicles (AUVs) allow archaeologists to survey the sea floor to depths of 6000 m. This brings 98% of the world’s ocean floor within reach, and increases dramatically the number of underwater sites available for archaeological study. Several projects in the past five years in the Mediterranean and Black Seas have proven the scientific merit of archaeology in deep water and trained an international cadre of archaeologists in the new technology. Experience shows it is imperative that work in deep water be collaborative. Projects are particularly fruitful when they bring together as a team technologists familiar with the systems, archaeologists trained in the methods of deep water work, and archaeologists specializing in the period, cultures, and geographical regions pertinent to the shipwrecks. A key lesson is that while technology plays a significant part in this work, it must be combined with the research designs, methodology, and insights of archaeologists to form deep water archaeology into a rigorous scientific practice. Toward this goal, underwater vehicles, precision navigation, and remote sensors designed specifically for archaeology will allow archaeologists to make fundamental discoveries about ancient cultures.