http://d.yimg.com/a/p/ap/20100509/ca...yAoxki4cbkyg--AP - Experts say North Korea's submarine fleet is technologically backward, prone to sinking or running aground, and all but useless outside its own coastal waters.
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http://d.yimg.com/a/p/ap/20100509/ca...yAoxki4cbkyg--AP - Experts say North Korea's submarine fleet is technologically backward, prone to sinking or running aground, and all but useless outside its own coastal waters.
Source