China has raised an 800-year old trading vessel from the bottom of the South China Sea. The ship, identified as the Nanhai No. 1 was actually located in 1987. The ship is believed to have between 60,000 and 80,000 porcelain objects on board.
The Nanhai No. 1, which means "South China Sea No. 1," sank off the south China coast with some 60,000 to 80,000 items on board, Xinhua News Agency reported, citing Wu Jiancheng, head of the excavation project.
Archaeologists built a steel basket around the 100-foot vessel, and it took about two hours for a crane to lift the ship and surrounding silt to the surface, Xinhua said. The basket was as large as a basketball court and as tall as a three-story building.
Green-glazed porcelain plates and shadowy blue porcelain items were among rare antiques found during the initial exploration of the ship. Archaeologists have also recovered containers made of gold and silver as well as about 6,000 copper coins.
Xinhua has a report that shows the "Crystal Palace" which was built to house the wreck while it is excavated. People will be able to watch the work as it goes forward.
The ship dates back to the early Southern Song Dynasty (1127-1279) and is 30.4 meters long and 9.8 meters wide. It was the first ancient vessel discovered on the "Marine Silk Road" of the South China Sea. It was named Nanhai No. 1? meaning "South China Sea No.1."
Wu said, Nanhai No. 1 left port in southern China to trade with foreign countries and sank probably due to stormy waves. It was quickly buried by silt. It was estimated there were probably 60,000 to 80,000 relics on board.
To better protect the precious relics and gain valuable information, archaeologists launched an unprecedented operation in early May to raise the wreck and the surrounding silt in a huge steel basket.
According to the plan, a crane would first put the basket onto a barge. Tow boats would then pull the barge to a temporary port on Sunday where the basket would be sent to a specially-built museum.
In order to avoid damage to the relics caused by a change of environment and pressure, the ancient ship would be put in a huge glass pool. There, the water temperature, pressure and other environmental conditions would be the same as the sea bed where the ship lay.
The pool, named "Crystal Palace" is 64 meters long, 40 meters wide and 23 meters high. It contains seawater and is about 12 meters in depth.
There is also an in depth (pun intended) look at the excavation work - with some nice photos - that also profiles Zhang Wei, the director of the Underwater Archeology Center of China who has driven the efforts to recover the ship for 20 years.