Touted as the world's most technologically advanced fast attack submarine, the USS South Dakota is set to join the US Navy fleet amid a growing threat to American undersea dominance from several foreign rivals.
원문출처 : http://www.cnn.com/2017/10/26/politics/navy-uss-south-dakota-submarine-china-russia/index.html
원문출처 : http://www.cnn.com/2017/10/26/politics/navy-uss-south-dakota-submarine-china-russia/index.html