Zhonghai Emeishan (中海峨眉山) is the world's largest floating drydock.http://www.cccme.org.cn/news/content189119.aspx It is used for the repair and reconstruction of very large ships.

Built in only 416 days, it was launched in September 2008 in Yangzhou in a ceremony involving senior municipal officials, including the mayor. It was delivered to the Shanghai Changxing ship repair base in October 2008. Construction cost 580 million Yuan; it has a high level of automation.

Specifications Length: 410m Beam: 82m Moulded depth: 28m Displacement: 42000 tonnes Lifting capacity: 85000 tonnes

See also List of world's longest ships No.5 Royal Dock

External links Description on China Tech Gadget

References