The Guard Districts (警備府, Keibifu) were second tier naval bases, similar to the first tier Naval Districts (鎮守府), with docking, fueling and resupply facilities, but typically lacked a shipyard or training school. They tended to be established by strategic waterways or major port cities for defensive purposes.[1] In concept, the Guard District was similar to the United States NavySea Frontiers concept. the Guard District maintained a small garrison force of ships and Naval Land Forces which reported directly to the Guard District commander, and hosted detachments of the numbered fleets on a temporary assignment basis.
After the annexation of Korea by the Empire of Japan in 1905, the Imperial Japanese Navy built extensive port facilities, transforming the small town into a major naval port. The port was upgraded to a Guard District on April 1, 1916; however, after the Russo-Japanese War it lost most of its strategic importance and was regarded as somewhat of a backwater assignment.[3] On the surrender of Japan, Chinkai was occupied by Destroyer Squadron 64 from the United States Navy led by the USS Harry E. Hubbard (DD-748).[4] It was repaired and continued to be used as a naval base during the Korean War. After the independence of Korea in 1945, the naval base was turned over to the Republic of Korea Navy, and remains a major naval base to this date.
Prados, John (1995). Combined Fleet Decoded: The Secret History of American Intelligence and the Japanese Navy in World War II. Annapolis: Naval Institute Press. ISBN0-460-02474-4.
Jentsura, Hansgeorg (1976). Warships of the Imperial Japanese Navy, 1869–1945. Naval Institute Press. ISBN0-87021-893-X.
Goldstein, Donald M (2004). The Pacific War Papers. Brassey. ISBN1-57488-632-0.