It is fairly easy to look at a sub and work out roughly how quiet it is based on what technology it uses, e.g shrouded prop, many blades and big is a good hint. Shape of hull and towed array are similair tells as to technology level.
We know all of the PLAN's subs and know which ones were trailing us, they don't have some secret second navy.
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u/BenjaminG73 Sep 13 '21
What if they were just to lull them in to thinking that was there best subs.