Big-E said:
Rumor has it that the 401 and 406 were so loud that it would throw off the migration patterns of whale pods. I guess it either scared them or damaged their accoustic senses.
Yep and the last time a Han class SSN approached Okinawa it was easily heard by a Japanese ASW escort destroyer and tracked for several hours.
The SSN could have been sunk anytime with no effort.
Besides, the Japanese have 60+ P-3C Orion ASW patrol aircrafts who come in very handy for these purposes
Worst of all is the current & only Chinese SSBN of the Xia class. Even supposing it is operational after all, it would better remain in its harbor
All of this will change the day the new SSNs (Victor III hull design, though probably Akula equipment) become operational. Still some time though before then...
cheers