Seem like they are happy with type 039B performance. no wonder they produced it in large number close to 20 in the last count
新浪军事编者：为了更好的为读者呈现多样军事内容，满足读者不同阅读需求，共同探讨国内国际战略动态，新浪军事独家推出《深度军情》版块，深度解读军事新闻背后的隐藏态势，立体呈现中国面临的复杂军事战略环境，欢迎关注。
图为039B潜艇。
央视节目《对话》又放出大料，中船重工常规潜艇总师吴崇建说：重工的潜艇的静音性能已经超过了俄罗斯的基洛级潜艇。接下来将利用量子导航、量子通信、人工智能增加潜艇性能，中国的新技术应用将颠覆世界对潜艇的认知。
在节目中，总师吴崇建首次证实中国潜艇的强大隐身性能，他说：俄罗斯的基洛级很多同志都知道，被誉为大洋黑洞，我们现在的潜艇，完全可以和它媲美，而且毫不夸张的说，我们现在已经超越它了。
吴崇建总师所说的潜艇应为我国039B型潜艇，此前分析认为，039B型潜艇的静音性能同基洛级潜艇相当，这次总师出面直接终结了之前的猜测，039B型潜艇不是同基洛级潜艇相当，而是毫无疑义的超越。要知道，潜艇没降低6分贝的噪音，对方装备的探测距离就会降低一半。
Summary
Chief submarine designer of China Ship building corp. group told the CCTV news reporter in a recent TV interview that China's new submarines are all super-quiet and in the near future the next gen Chinese conventional and nuclear submarine will equipped with revolutionary new tech like:
Quantum communication, Quantum guidance as well as many advanced
AI techs to further improve their combat capabilities.
google translate
CCTV program "dialogue" and recently release, China Shipbuilding Heavy Industry General Manager Wu Chongjian said: heavy industry submarine quiet performance is better than the Russian Kilo class submarines.
The next use of quantum navigation, quantum communications, artificial intelligence to increase submarine performance, China's new technology applications will subvert the world's awareness of submarines.
In the program, the chief Wu Chongjian for the first time to confirm the Chinese submarine's powerful stealth performance, he said: Russia's Kilo class many comrades know as the ocean black hole, our submarine is now comparable, and it is no exaggeration. We have now gone beyond it. Wu Chongjian said the submarine should be China's 039B submarine, after the analysis that the 039B submarine quiet performance with the Kilo-class submarine quite, the chiefs came forward directly and end of the speculation,
039B submarine is not with Kilo Class submarine quite, but no doubt better.
Here is Jamestown article on China advance in quantum sensing and navigation
Similar logic about the utility of quantum navigation is evidently at play in PLA thinking.
The realization of quantum navigation could allow for a “new generation of inertial navigation,” enabling high-precision navigation without GPS, as researchers from the National University of Defense Technology have noted (). This so-called “quantum compass” would be particularly useful for submarines and other maritime platforms for which it could enable the pinpointing of their position with high levels of accuracy. Quantum navigation could thus potentially liberate Chinese operational platforms from dependence on space-based positioning systems, which can be easily jammed, while the PLA concurrently becomes ever more able to hold U.S. space systems at risk through advancing its counterspace capabilities.
