Kuphar

A kuphar (also transliterated kufa, kuffah, quffa, quffah, etc.) is a type of coracle or round boat traditionally used on the Tigris and Euphrates rivers in ancient and modern Mesopotamia. Its circular shape means that it does not sail well against the current, as it tends to spin, but makes it safe, sturdy and easy to construct. A kuphar is propelled by paddling, rowing or poling.