Defense Technology International - ThyssenKrupp Marine Systems (TKMS), the German naval shipbuilding group, has released photos of the first Type 214 submarine now in service with the Republic of Korea Navy.

With the handover of the 1,700-ton submarine, named the Son Won Il, at the end of December South Korea has become the third nation after Germany and Italy that operates submarines powered by a combined diesel-electric and fuel cell propulsion.

Washington Post - A long-simmering dispute over a group of islets escalated sharply Wednesday, with South Korea dispatching a flotilla of 20 patrol ships toward the territory as the Japanese coast guard sought to conduct an official survey in surrounding waters.

Korea Herald - South Korea has been participating in anti-submarine warfare exercise SHAREM-148 with the United States.

CNN - South Korea's navy has sent three warning messages to North Korea after one of the North's patrol boats briefly crossed a disputed maritime border, the South Korean military says.