A Study on the Historical Investigation about Tongjeyeong or Naval Control Headquarters in Hansan Island during the Japanese Invasions against Korea: Focusing on Historical Materials

It is found in a great deal of historical material and domestic database data that Tongjeyeong or Regional Naval Control headquarters was first established on Hansan Island (閒山島) in August 1593 and Yi Sun-sin(李舜臣) served as the commander of the three provinces' naval forces for about 3. 7 years. Over the years, a theory was raised that the first Samdo naval control camp was Yeosu headquarters. Thus, this researcher conducted a research on Tongjeyeong or Naval Control Headquarters in Hansan Island during the Japanese invasions against Korea, relying on historical records. In June of that year, Yi Sun-sin developed a strategy to defend against Japanese ships in the seas of Gyeonnaeryang and Hansan Island. As Yeosu main camp had limitations in sea defense, he moved his camp to Hansan Island on July 15 and commanded the Samdo naval forces in August. In June of the same year, Yi Sun-sin developed a strategy to defend against Japanese naval ships in the seas of Gyeonnaeryang and Hansan Island. Finding that there had been the limitations for the Yeosu main camp to defend the seas, he moved his camp to Hansan Island in July 15 and commanded the Samdo naval forces in August. Records regarding this include Record, Markets, and Memorial Stone Monuments in The Collected Works of Admiral Yi, Sun-sin, Duryongpogisabi by Park, Hongmi, Haengjang by Jeong Wunhee, and Tongjeyeongchungryeolsagi by Song, Si-yeol. In a letter sent by Yi Sun-sin to Inspector Lee Won-ik, the reason for Admiral Yi Sun-sin's request for leave proves that Yi Sun-sin was residing at Tongjeyeong in Hansando as a Control Officer. The record in this person's Haengrok confirms his achievements that won a great victory in Hansan Island. It is said that Hansan Island is the first naval headquarters. This assumption is provided based mainly on the title of ‘Naval Commander of Hansan Island and Samdo’ in ‘Seonyuhogyegyoso’ that Seonjo, the 14thking of the Joseon Dynasty had issued, and the record in Duryeonggisabi. Through new data about it, the scale and operation of the Naval Headquarters Handsan Island, during the Japanese invasion, can be inferred. Considering that Hansan Island has been reconfirmed as the operational headquarters of the naval commander, the existence of Tongjeyoung can never be denied.