Chinese shipbuilders stand on a submarine designed by a farmer Li Yuming (not pictured) on the Yangtse River in Wuhan, central China's Hubei province in this picture taken September 24, 2005. The submarine, 9.8 meters long, two meters wide, and four meters high, was built by some ten shipbuilders in seven months. Maritime Administration of the Yangtse River banned the submarine's trial voyage because it did not undertake any navigational procedure.