Yangsi Line

The privately owned Tasado Railway opened a 39.5 km (24.5 mi) line from South Sinŭiju interlocking on the Kyŏngŭi Line of Chosen Government Railway (Sentetsu) to Tasado Port via Yangsi, called the Tasado Line, on 31 October 1939,[2] to provide the Oji Paper Company (today the Sinuiju Chemical Fibre Complex) of Sinŭiju a means of shipping its products out via the port at Tasado, as the Yalu River freezes in winter. Then, on 29 October 1940 the Tasado Railway opened a second line, called the Yangsi Line, from Yangsi to Namsi,[3] likewise on Sentetsu's Kyŏngŭi Line, to make a southern connection with the mainline to P'yŏngyang and Kyŏngsŏng. On 1 April 1943, Sentetsu nationalised the Sinuiju–Yangsi section of the line,[4] both Sentetsu's new line, as well as the Tasado Railway's truncated line, kept the "Yangsi Line" name; the Tasado Line was thus shortened to its present-day condition.

After the partition of Korea the line was within the territory of the DPRK, and was nationalised by the Provisional People’s Committee for North Korea along with all other railways in the Soviet zone of occupation on 10 August 1946, to create the Korean State Railway (Kukch'ŏl);[1] at that time, Sentetsu's and the Tasado Railway's sections of the Yangsi Line were re-merged, to return the line to its original route from South Sinŭiju to Namsi. Since the distance between South Sinŭiju and Namsi via the Yangsi Line was nearly 11 km (6.8 mi) shorter than via the original routing of the P'yŏngŭi Line via Paengma, Kukch'ŏl decided to rearrange the lines; thus, the Yangsi Line was made part of the P'yŏngŭi Line, and the original South Sinŭiju–Paengma–Yangsi section was separated to become the Paengma Line in 1964.[1] Electrification of the former Yangsi Line was completed in the same year.[5] Yangsi and Namsi stations were given their current names, Ryongch'ŏn and Yŏmju respectively, sometime after 1964.

• Ministry of Railways (1937), 鉄道停車場一覧. 昭和12年10月1日現在(The List of the Stations), p485