Namque traicitur per latera parietum axis habens extra navem prominentia capita, in quae includuntur rotae diametro pedum quaternm et s extantes habentes circa frontes adfixas pinnas aquam tangentes.
For an axle is passed through the sides of the hull, with ends projecting beyond the ship. On these axles are projecting wheels with diameters of 4 1/21 feet, having paddles round the edge which touch the water.
final_alignments\Vitruvius_Architecture_Book_10.json