They were found 1,000 feet down in June by a team made up of Harvard archaeologists led by Lawrence Stager, Dorot Professor of the Archaeology of Israel, and a crew from the Connecticut-based Institute for Exploration, headed by oceanographer Robert Ballard. The ships are the oldest ever found in the deep sea and may change the understanding of ancient Mediterranean commerce. Because many shallow-water wrecks have been found, historians and archaeologists believed that ancient sailors preferred routes that hugged the coastline. Modern technology, however, is opening a new field of deep-water archaeology, which is showing that ancient sailors did indeed...