And the latest weapon trial ship for PLAN I have been suspecting, number 893 (yet got a name), had just arrived at Shanghai, for further equipments, perhaps.
893 has been quite different from its previous sisters 891 & 892, e.g. low bridge. So it's said to target testing on submarine warfare, one of PLAN keen to improve. Compared with 891 & 892:
6 Yuan class SSK's at dock in Daxiedao with the 22nd Submarine Flotilla:
There are now two shipyards producing Yuan's, which translates to two launches per year. No clue at how many are actually planned for production. But with 22 Ming's to replace, 20 looks like a realistic number. But then what about the Qing's?