We all know about the great shipping technology of the Greeks during Antiquity and the Persian row-ships of Salamis. We all know about the dhows of the Islamic caliphate and how they dominated the Indian ocean. We all know about the Viking Ships that transported Ericsson to the Americas. But what did Roman naval/Merchant ships look like? What where they made of and how large was it? They questions dazzle me and I hope someone can answer it!