Geobukseon(The Turtle ship)

The Turtle ship, also known as Geobukseon (거북선), was a type of large Korean warship that was used intermittently by the Royal Korean Navy during the Joseon Dynasty from the early 15th century up until the 19th century. It was used alongside the standard Korean Panokseon warships in the fight against invading Japanese naval ships. The ship's name derives from its protective shell-like covering.

The first references to older, first generation turtle ships, known as Gwiseon (귀선; 龜船), come from 1413 and 1415 records in the Annals of the Joseon Dynasty, which mention a mock battle between a gwiseon and a Japanese warship. However, these early turtle ships soon fell out of use as Korea’s naval preparedness decreased during a long period of relative peace.

Turtle ships participated in the war against Japanese naval forces that supported Toyotomi Hideyoshi's attempts to conquer Korea from 1592-1598. Korean admiral Yi Sun-sin is credited with designing the ship. His turtle ships were equipped with at least five different types of cannons. Their most distinguishable feature was a dragon-shaped head at the bow (front) that could launch cannon fire or flames from the mouth. Each was also equipped with a fully covered deck to deflect arrow fire, musket-shots, and incendiary weapons.^[6] The deck was covered with iron spikes to discourage enemy men from attempting to board the ship. Claims that it was iron-plated remain controversial (see section on decking).

Lee Sun-shin

Lee Sun-shin (April 28, 1545 – December 16, 1598, Korean: 이순신, Hanja: 李舜臣) was a Korean naval commander, famed for his victories against the Japanese navy during the Imjin war in the Joseon Dynasty, and is well-respected for his exemplary conduct on and off the battlefield not only by Koreans, but by Japanese Admirals as well. Military historians have compared his naval genius to that of Admiral Horatio Nelson. His title of Samdo Sugun Tongjesa (Hangul : 삼도수군통제사, Hanja :三道水軍統制使), literally meaning "Naval Commander of the Three Provinces," was the title for the commander of the Korean navy until 1896.


Perhaps his most remarkable military achievement occurred at the Battle of Myeongnyang. Outnumbered 333 ships to 13, and forced into a last stand with only his minimal fleet standing between the Japanese Army and Seoul, Yi delivered one of the most astonishing defeats in military history.
Despite never having received naval training or participating in naval combat prior to the war, and constantly being outnumbered and outsupplied, he went to his grave as one of few admirals in world history who remained undefeated after commanding as many naval battles as he did (at least 23).

Yi died at the Battle of Noryang on December 16, 1598. With the Japanese army on the verge of being completely expelled from the Korean Peninsula, he was mortally wounded by a single bullet. His famous dying words were, "The battle is at its height...beat my war drums...do not announce my death."

The royal court eventually bestowed various honors upon him, including a posthumous title of Chungmugong (충무공, 忠武公, Duke of Loyalty and Warfare), an enrollment as a Seonmu Ildeung Gongsin (선무일등공신, 宣武一等功臣, First-class military order of merit during the reign of Seonjo), and two posthumous offices, Yeonguijeong (영의정, 領議政, Prime Minister), and the Deokpung Buwongun (덕풍부원군, 德豊府院君, The Prince of the Court from Deokpung). Yi remains a venerated hero among Koreans today.