The US should be (and probably is) building a sub-killer fleet (also of subs) to keep up a war of attrition against all Chinese subs. Trail 'em all the time, and randomly send them to the bottom. We must not let them acquire a sub fleet capable of nuclear attacks on the US. The Chinese Navy is doing a pretty good job of putting their own subs on the bottom all by themselves.
Dozens die on Chinese sub - 02MAY03