Fast AOE Supply ships, similar to US supply Class:
The Chinese commissioned their first large, fast repleneshment vessel, the Type 901 which they completed last year. They have launched a second and are building a third. They may build four or more.
These are large, fast, full supply vessels which can keep up with their carrier groups and supply them with all their needs, similar to the US class of Supply AOE vessels. They displace 50,000 or more tons.
In addition, they have built two smaller class AOR type vessels for both fuel and dry supplies. Two classes of those where they have built 6-9 of each and will probably build more. The Chinese understand what is needed to support their task forces at sea, far from home, and are building up to support those forces as they defend the Chinese SLOCs around the world.
Submarines:
The Chinese built five attack submarines and one ballistic missile submarine back in the 1980s an 1990s (Atually the first SSN was built in the 1970s). They were very loud and were never really made waht th US would consider fully operational.
Beginining in the 2000s, they started to develop the Type 093 anuclear attack submarine.
Over the next ten years they have painstakingly developed, then improved this design.
Ultimately they built a totql of six of these boats and have commissioned them. Initialy they were still far too loud and limited. But the two later designs began addressing these issues. They now have all six available and commissioned.
The Chinese then began developing the Type 095 SSN and it is rumored that they have launched at least one of these, perhaps two, and that they are testing them now. If they meet the PLANs expectations, they will build many more of them. They know they are weak and very much behind the US and other western powers (like the UK and France) in this area, technically, qualitatively and in numbers.
The Type 095 will most probably achieve the US Los Angeles class capabilities, perhaps even the improved version of those vessels, in terms of quiteness qnd capabilities overall. Their images of them would certainly make on think so.
Depiction of Type 95 SSN
But, despite appearances and that depiction, they are still two generations behind current US and UK capabilities. But in numbers they could still be dangerous. As it is right now, they have six operational SSNs, all of which are less capable than the US Navy LA Class boats.
However, the Chinese have tried to compensate for this lacking by building many more modern conventinal submariens and they have had more success there.
In that area they started off by buying a total of 12 Kilo class submarines from Riussia. They then built their own Song class submarines, and ultimately designed an improved class, the Yuan class.
This class has been upgraded with stealth features and an AIP capability. They have 14-16 of those boats, 12-14 Songs, and 12 kilos. All of these 40+ conventional subs can be dangerous in litttoral waters or at any chokle point, like narrow straights.
Their intent would to use them to try and build a defensive ring around major operations they undertook in the vicinity of the mainland, or in the south China Sea and try and employ a screen to keep US SSNs out.
But, as they continue to focus on blue water capabilities and developing their own SLOCs (Sea lanes of Communication) as their trade and energy needs require, they will continue to have to foucs on nuclear desgns as well until they get it right.