Model (scale 1:14) of one of the junks that traded over the famous rapids of the Upper Yangtze river. They were either sailed, propelled by 'tracking' the banks, or rowed. The junks had a shallow hull which was very strong. They carried 12 hands and 75 trackers when necesary. The model represents a junk 77 ft in length and 16 ft in breadth.
© Science Museum / Science & Society Picture Library