An unfortunate phenomenon I've noticed during my time on this site is that I seem to elicit responses from people I least want to hear from. Oh, well.
Has 10 nuclear subs a year ever been achieved in the modern era, post WW2?
Has an economy larger than a city-state grown at double digit rates for three decades without interruption, post or pre WW2? There's always a first, and China is that first.
Somehow I doubt they will lay down more than 3 subs a year.
Some of the numbers being thrown around in these last few posts are deep in fantasy fanboy territory.
Your doubts and opinions are quite meaningless because there just isn't much thought behind them. You simply fail to comprehend China's scale and momentum - if you did, you wouldn't do anything as ridiculous as compare it to America and the Soviet Union. I hope (but not expect) the following example can go some way to correcting your ignorance: Let's take France's economy and compare it to China's. When I last did a calculation in 2019, China added France's entire GDP as an increment to its own every couple of years. Contemplate that for a second - think about all of your country's economic activity and understand that every two years, another French economy pops into existence in China. Note that this was back when France had an economy, before COVID-19 demolished it.
The point of this example is not to belittle and diminish France, the point is that China is without peer or equal. It cannot be compared to anything else, it is in a
galaxy of its own.
The best Soviet and American yards were laying down 3-4 subs at their peak
China is just better.
And we know that China's military development is very methodical and some would argue even conservative.
Not only do you fail to comprehend China's scale, you completely misunderstand the most basic principles of its military development. The cautious experimentation you brought up happens only if China's technology is both behind the world standard and rapidly advancing. Once China is confident that its technology is competitive, it's full speed ahead - ref. Type 052C -> Type 052D/Type055 transition. With the construction and expansion of the new yard, it's crystal clear that China is confident that the Type 09-IIIB/09-V is competitive and will begin rapid construction.
But we can all pretend for various reasons, some because they're legalistically cautious, others because they're spiteful anti-China ill-wishers, that what applied in the USSR and US applies to China. Then a few years later when the obvious comes to pass, we can all pretend to be surprised that the capacity China built actually gets utilized.