Chinese sub has the same quality like great Chinese car of BYD Han. The same Chinese company which even great and prominent investor like warren Buffett invested in it.I read it from open source.
chinese subs have the same quality like chinese cars: low quality, bad design.
Your subs make noise like Ccp loudspeaker.
More or less speaks about it volume. This is a well known fact. Feel free to Google it....
LoL.. This chart was draw when the Chinese sub Type 095 is not even in service... More or less speaks about the credibility of this kind of amateur report done by US. There all your claim are basically trash and not worth listening...You are funny. What official source? All subs acoustic signatures are secret and classified. just a guessing game.
Even this chart drawn by US scientists more a decade ago also a guess
But ok you are welcome to ask Ccp to give us the information
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