evidence: Yi was credited for claiming back from Jurchen invaders the island Noktundo in the delta of the Tumen River on the border between modern-day Primorsky Krai, Russia and Korea. Noktundo was handed over to Russia by the Qing dynasty in 1860 without Korea’s participation in the deal. [...] At the Battle of Myeongnyang on Oct. 25, 1597, Yi, using just 13 Panokseon battleships, fought the Japanese Navy near the island of Jindo, off the southwestern corner of the Korean Peninsula, decimating some 330 Japanese warships. [...] In the Battle of Myeongnyang on Oct. 25, 1597, Adm. Yi Sun-sin, using just 13 Panokseon battleships, fought the Japanese Navy near the Island Jindo in the southwest waters off Korea, decimating some 330 Japanese warships. Photo © Hyungwon Kang