Type 032 Qing-class Ballistic Missile Submarine
From Canadian Power Wiki
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 thirty days.