rockypath

With couple submarines to go along, it is enough to keep their vessles in base.  

I don't think China wants to engage but it needs to demonstrate its position.

rockypath

Here is additional information but it is in simplified Chinese.

http://baike.baidu.com/view/6201049.htm

rockypath

China has more than 5 vessles and 2 submarines. It can easily maintain enforcement by rotation. In additional, it now can have an excute to establish a navy base in South China Sea which would be very sensitive action to take that will raise inernational political concerns and fears during peaceful time.