During the invasion by the Japanese navy (Jinshin waran, or Bunroku and Keicho War in Korea on Japan's side) that started in 1592, the left naval commander in Jeolla Province Yi Sun-sin organized and led the fleet consisting of Turtle ships that were reportedly invented by Yi himself.
1592年に始まる日本軍の侵攻（壬辰倭乱、日本でいう文禄・慶長の役）では全羅左水使李舜臣が自ら考案したと言われる亀甲船の艦隊を率いた。