Hansan Island, known to Koreans as Hansando, is located across a relatively narrow strait from Choongmoo City, which was once known as Tongyeong. Simplified diagram A strait is a narrow channel of water that connects two larger bodies of water, and thus lies between two land masses. ... Tongyeong is a city in South Gyeongsang Province, South Korea. ...

Originally the site of Yi Soon-Shin's first naval base, it was strategically designed to conduct surveillance and reconnaissance of the nearby Kyunneryang strait, which was an inland route leading directly to the Japanese naval base located in Busan. Modern Naval Tactics It is tempting to regard modern naval combat as the purest expression of tactics. ... Busan tower by night Haeundae beach at dawn, February 2005 Busan Metropolitan City, also commonly referred to as Pusan, is the largest harbor city in Korea, with a population of about 4 million, Busan is South Koreas second largest metropolis next to Seoul. ...

After King Seonjo's jealousy and paranoia lead to Yi Soon-Shin's arrest, imprisonment and subsequent torture and interrogation by the court's Confucian faction, Won-Kyun was reassigned to lead the Korean navy. Confucianism (儒家 Pinyin: rújiā The School of the Scholars), sometimes translated as the School of Literati, is an East Asian ethical, religious and philosophical system originally developed from the teachings of Confucius. ...

However, Won-Kyun, in a decision of monumental stupidity, decided to brazenly attack the Busan base, even with the tides itself against him. Onland shelling forced him to retreat, and the Japanese navy pursued him relentlessly, sinking all but thirteen war-galleons in the process. Won-Kyun himself would be killed during this disastrous retreat, and Hansan Island, and its evacuated naval base, was laid open to vengeful Japanese forces, who would eventually burn it down.