New Roman Shipwrecks Bust Ancient Sailing Theory Roman finds are deepest in Mediterranean By Matt Cantor, Newser User Posted May 29, 2012 4:33 PM CDT 13 comments Comments Broken ancient pottery from the wreck of a 3rd century AD Roman-era ship found off the western coast of Greece is seen. (AP Photo/Greek Culture Ministry) (Newser) – Greece has tracked down the deepest ancient shipwrecks ever found in the Mediterranean, and they're challenging what we thought we knew about the Romans. While experts previously believed that ancient ships held to the coastlines for safety—instead of venturing into the open sea—the two wrecks disprove that theory, Greek officials say. The 2nd-century wrecks, found in waters about a mile deep, were discovered off Greece's west coast during the search of the site of a planned Greek-Italian gas pipeline. The AP reports that radar and robot subs turned up pottery and ballast stones in addition to the ships' remains.