O.k. So, these are propagada by the Philipines: http://www.manilalivewire.com/2015/07/united-states-may-deploy-missile-interceptors-to-the-philippine-borders/ back in mid-2015.
These are all over Google: https://www.google.com.au/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=south+china+sea+nuclear+submarine+haven