Chinas pirate patrol submarine is too noisy, say naval experts | South China Morning Post

Chinas pirate patrol submarine is too noisy, say naval experts | South China Morning Post.

Commentary: The article discusses the Type 091 Han class of nuclear submarines.

I would personally doubt the assertion that the Type 091s are only “20 years” behind the U.S. in terms of quietness. Double that and you’re going somewhere.

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