Arles Rhône 3 is an ancient Roman boat discovered in 2004, with parts of it only 13 feet (3.96 m) below the surface in the Rhône River of Arles, France. [1] [2] [3] In the 1st century AD, it had been a 102 feet (31.09 m) long river trading vessel. It has been displayed since 2013 at the Musée départemental Arles antique. A marble Neptune was also discovered in the river, [4] and divers recovered many amphorae. [5] [6] The boat’s flat bottom was made of oak planks. [7]