I think 13 is the current number. Not an underestimation.Btw exactly how many Yuan class subs does the PLAN operate at this moment. It seems to me that 12-13 would be a small underestimation.
I believe I have read that the PLAN is going to build a total of twenty...but I am not sure if that is official.
 
				 
 
		 
 
		


 
 
		
 
 
		


