/begin my excerpts N. Korea's Mini-Sub Plated With Sonar-Absorbing Tiles to Evade Detection Ryu Yong-won N. Korea's Shark class and Yugo class mini-submarines are plated with sonar-absorbing tiles to evade detection by our side, and some Yugo class mini-subs carry 533mm heavy torpedoes, it has been revealed. Intelligence sources said on Apr. 6 that, according to investigation by relevant authorities regarding N. Korea's (mini-)submarine, torpedoes and mines, N. Korea obtained Russian technology with which they developed sonar-absorbing tiles and plated their Yugo class mini-submarines with them. The tiles are made of chlorinated rubber with silicon mixed in. N. Korea is...