[SeekAndFind]

China’s first nuclear-powered submarine, the Type 091, or Han-class was an ambitious project that gave China skin in the nuclear submarine game. Though the Han-class is nuclear powered, it suffered from an apparently high noise level. The Type 093 was built to address this very issue.

Submarines are only a good as their noise level—the quieter a submarine, the stealthier it is. One of the main factors that contribute to noise levels are propeller blades, which can cause an underwater phenomenon called cavitation, where bubbles form along the blade edges and cause underwater noise.

Another noisy factor is the submarine’s propulsion system. For diesel-electric submarines, diesel generator machinery can cause a great deal of noise. Nuclear-powered submarines also generate some noise, chiefly the coolant pumps that service the reactor core.

The Shang-class is much quieter—and may have gotten some Russian design help.

SEE HERE:

https://nationalinterest.org/blog/reboot/chinese-submarines-are-becoming-quieter-heres-what-we-know-about-new-type-093-168647

[Bulwyf]

Diesel electric are the quietest, except when its time to charge up the batteries.

All China can do is steal tech. Commies aren’t producers.

[spokeshave]

One of the main factors that contribute to noise levels are propeller blades, which can cause an underwater phenomenon called cavitation, where bubbles form along the blade edges and cause underwater noise.

Didn't clinton release some grinding machines to china that can be programmed to cut propeller blades...