Qing-class submarine
The Type 032 submarine (NATO reporting name: Qing-class) is a class of diesel-electric submarine currently undergoing testing in China's People's Liberation Army Navy. It is said to be the world's largest conventional submarine, at a submerged displacement of 6,628 tonnes and is able to submerge for a maximum of 30 days. Design. The Type 032 has a similar ventral "bay" to the Golf-class submarine that protrudes downward. The project for this double hulled submarine begun in January 2005, and construction begun at Wuhan Shipyard in 2008. The submarine was launched on  September 10, 2010, and sea trials were completed in September 2012. The submarine entered service on October 12, 2012 with pennant number 201. The submarine is a testbed for new technologies such as combustion powered torpedoes, compartments for special forces, underwater unmanned vehicles, new SLBMs, new cruise missiles, new anti ship missiles, new SAMs, and a new escape pod which are applied to the Type 095 and Type 096 submarines. Specifications are as follows: