Looks like the green paint might be suspect..(right click, view image)
![[Linked Image]](http://static1.businessinsider.com/image/53a090f0eab8eac6710bc4ff/north-korea-is-in-the-process-of-developing-a-fleet-of-nuclear-missile-capable-submarines.jpg)
That rust would not inspire confidence, nor the small bit of mooring line left attached.
Not a sub guy, but it seems that getting a sub to sink is easy, getting it back up might be tricky.
