Via mr. unknown at the CDF. Quotes from an interesting paper. It applies to PLAN submarines in general so its not only 093s and such.
Vol 4, Iss 1 Winter 2020/2021
Stable URL:
The U.S. Navy’s Loss of Command of the Seas to China and How to Regain It
Joe Sestak
Some quotes:
"And China’s constant upgrades in the quieting of diesel and nuclear attack submarines have meant that early warning detection could no longer be done by long-range, passive sonar. It would have to be done by close-in, active sonar instead. The physics of active sonar mean that, in most cases, submarines can only be detected using active sonar after they are already within their weapon-firing range. These threats keep most U.S. forces at a great distance until enough warships (and airlift) have arrived to provide a defensive sanctuary to allow U.S. forces to move forward."
This is why I mentioned in another thread that the gold standard in submarine detection is now through active sonar, like in using VDS, instead of passive towed arrays.
"For instance, submarines at the time were returning from deployments with sonar tapes that revealed (through post-deployment analyses by high-capacity computers) that there had been quiet, modern Chinese submarines close by that had gone undetected. "
So Chinese subs might be more quieter than suggested.
Overall, paper has some interesting bits and pieces, but it all sounds like Star Trek to me. Star Trek tries to make its science sounds legitimate by throwing word babble such as 'photon' and 'quantum', and it is a similar case here with 'quantum computing', 'AI', '5G' and 'cyberwarfare' without making a tangible connection of such to naval warfare.
