Nan'ao One is a 25.5 m (84 ft), 7.0 m (23 ft) wide ancient Chinese merchant ship that sank in the Sandianjin waters off the coast of Nan'ao Island, about 5.6 nautical miles from Shantou, Guangdong Province, China. Accidentally discovered by a group of local fishermen in May 2007, it is currently considered the first late Ming dynasty (1368–1644) ship ever found and probably the only one from the reign of Emperor Wanli (1573–1620) that China has discovered to date.