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U.S. Tracks N. Korean Submarines
U.S. nuclear-powered attack submarines have been clandestinely tracking North Korean U-boats since the North began to show progress in developing submarine-launched ballistic missiles last year.
Per Gorb's post yesterday, maybe we're doing more than just tracking them...
The U.S. has apparently been keeping the information from South Korea.
Someone will have to explain why...
SLBM attacks would be difficult to detect unless a country's own submarines lie in wait in front of an enemy's submarine bases and ambush them in a crisis.
In other words, SOP for American attack subs the past sixty years...
The U.S. has been spying on North Korean submarine bases in Hamnam and Sinpo, according to a source, and will probably step up surveillance after North Korea succeeded in test-firing an SLBM on Wednesday.

Conventional submarines powered by diesel engines cannot conduct missions underwater for more than three to four weeks, but nuclear-powered ones can operate underwater for up to three months at a time.

The U.S. subs are gathering crucial sonar signatures that will help them identify the 2,000-ton submarines that carry SLBMs.

But the U.S. subs are operating on the high seas away from the North's territorial waters to avoid provoking clashes, and North Korea's anti-submarine equipment is too outdated to detect them.
That's what we're saying. My guess is that our guys are right up on them from the point where the water gets deep...

Posted by: Steve White 2016-08-26
http://www.rantburg.com/poparticle.php?ID=465899