USS Blueback. America's last conventional submarine (SSK), decommissioned in 1990 after appearing in the movie The Hunt for Red October.
A Chinese Type 093 Shang Class SSN. A major opponent to Japanese Soryus, US SSNs and the Collins.
Two Type 093's at Sanya Naval Base on China's island of Hainan. The 093s and follow-on 095s may form the bulk of Chinese SSNs by 2030.
James Holmes has written another excellent article dated September 18, 2014, publised in The National Interest, concerning the usefulness of SSKs for the US and commenting on Soryus, HDW 214s and Collins.
Where James discusses "The Soryu could form the nucleus of a multinational East Asian submarine force spanning more than just the U.S. Navy and the JMSDF...from...Australia to the south." [see in red below]. This has some similarity to my "For example long range would be less important if Australia has made (is making) some strategic agreement with Japan to divide mission responsibility between a Japanese northerly submarine patrol sector and Australia in the south" in my Australia's Future Sub likely to be Japan's Soryu, outsider is Germany, of September 8, 2014 on this blog.
The string for James' article is http://nationalinterest.org/feature/us-submarines-run-silent-run-deepon-diesel-engines-11306 :
US Submarines: Run Silent, Run Deep...On Diesel Engines?