It can build four subs at a time.
Starting later this year, China’s new submarine factory on the Yellow Sea will churn out nuclear-powered attack submarines—also known as SSNs—all but ensuring that the sub program of the People’s Liberation Army Navy (PLAN) will be a deadly global force.
Bohai Shipbuilding Heavy Industrial Corporation is putting the finishing touches on its new facility, which will start production this year. BSHIC, based in Huludao, Liaoning Province, is China’s only builder of nuclear submarines. It previously built the Type 091, 093 nuclear attack submarines (SSN) and Type 092 and 094 nuclear ballistic missile submarine (SSBN). Why is this building such a big deal? Simple, really: inside a superstructure, submarines are hidden from snoops, spies, and satellites. It also provides a controlled environment for development and construction.
The massive new assembly hall, which measures more than 430,000 square feet, has enough room for two parallel production lines; each production line has one half dedicated to assembling and attaching together submarine modules, and the other half dedicated to finishing the hull with quieting measures like anechoic tiles. That’s enough space for four SSN’s to be built simultaneously (two sets of modules being assembled at one end, and another pair of assembled hulls being fitted out before launch). Once completed, the SSN is rolled off the line and into the ocean. The assembly hall can also handle construction of the next generation SSBN, the Type 096.
Full article: China is building the world’s largest nuclear submarine facility (Popular Science)