Soho Line

The Sŏho Line is an electrified 762 mm (2 ft 6 in) narrow gauge railway line of the Korean State Railway in Hamhŭng-si, North Korea, running from Hamhŭng to Hŭngnam and Sŏho.^[1]

Sŏho Line
A narrow-gauge passenger train on the Sŏho Line.
Overview
Native name	서호선 (西湖線)
Status	Operational
Owner	Sinhŭng Railway (1934–1938) Chosen Railway (1938–1945) Korean State Railway (since 1945)
Termini	Hamhŭng Sŏho, Hŭngnam
Stations	11
Service
Type	Light rail, Passenger rail Regional rail
Depot(s)	West Hamhŭng
History
Opened	11 May 1934 (Hamhŭng—Ch'ŏngiri (Hadŏk)) 5 March 1936 (Ch'ŏngiri—Naeho) 15 December 1936 (Naeho—Sŏhojin)
Technical
Line length	17.6 km (10.9 mi)
Number of tracks	Single track
Track gauge	762 mm (2 ft 6 in)
Electrification	1500 V DC Overhead line
Route map Legend Sŏho Line Pinallon Line P'yŏngra Line Sinhŭng Line 0.0 West Hamhŭng Hamhŭng P'yŏngra Line to P'yŏngyang 1.2 Sap'o Horyŏnch'ŏn (bridge appx 320 m (1,050 ft)) Hamhŭng Choch'ajang 3.5 Sangsu 5.9 Sŏngch'ŏn limits of February 8 Vinylon Complex Ch'anghŭng Hamhŭng Thermal Power Plant 7.6 Hungdok Hamhŭng Silicate Brick Factory Hŭngnam Pharmaceutical Factory (bridge appx 35 m (115 ft)) 10.0 Unsong Ryongsŏng Machine Complex 12.0 Ryongsŏng 13.6 Hadŏk Hŭngnam Port 15.6 Hŭngnam 17.6 Sŏho P'yŏngra Line P'yŏngra Line to Rajin

Soho Line
Chosŏn'gŭl	서호선
Hancha	西湖線
Revised Romanization	Seoho-seon
McCune–Reischauer	Sŏho-sŏn

History

During the Japanese colonial era, the privately owned Sinhŭng Railway built a network of 762 mm (2 ft 6.0 in) narrow-gauge railways around Hamhŭng. These were the Hamnam Line, the Jangjin Line, and the Songheung Line opened between 1923 and 1933, and the Namhŭng Line, which was opened in three sections between 1934 and 1936.

Section	Opening date	Length
West Hamhŭng - Ch'ŏngiri (Hadŏk)	11 May 1934	14.9 km (9.3 mi)
Ch'ŏngiri - Naeho (closed)	5 March 1936	1.7 km (1.1 mi)
Naeho - Sŏhojin	15 December 1936	1.7 km (1.1 mi)

The Sinhŭng Railway was bought by the Chosen Railway on 22 April 1938.^[2]

After the defeat of Japan in the Pacific War and the subsequent partition of Korea, the entirety of the line, being north of the 38th parallel, was located in the Soviet zone of occupation; on 10 August 1946, the Provisional People's Committee for North Korea nationalised all railways within its jurisdiction, including the Namhŭng Line, and it has since been operated by the Korean State Railway.^[1]

Originally built entirely as a narrow gauge line, frequent accidents on the line led the Korean State Railway to convert the Hamhŭng—Sinhŭng section of the Sinhŭng Line to standard gauge for greater safety and increased transportation capacity;^[3] after the regauging of this section was completed, West Hamhŭng station was disconnected from the Sinhŭng line. When Naeho Station was closed, the line between Hadŏk and Sŏho was realigned to the current, shorter alignment.

In 2017, the line was reconstructed with the participation of the Hamhung Narrow Gauge Railroad office, Yonggwang Yonju plant and organised by the South Hamgyong provincial party office. Stations, sleepers and concrete poles were all replaced.^[4] Hungdok station was rebuilt as a model station.^[5]

Services

The entrance to the February 8 Vinylon Complex at Pinallon Station.

The Sŏho Line is used exclusively for passenger trains for commuters.

Route

The pink background indicates that that section is electrified 762 mm (2 ft 6 in) narrow gauge.

Distance (km)
Original		Current		Station Name		Former Name
Total	S2S	Total	S2S	Transcribed	Chosŏn'gŭl (Hanja)	Transcribed	Chosŏn'gŭl (Hanja)	Connections (former)
0.0	0.0	0.0	0.0	Sŏhamhŭng (West Hamhŭng)	서함흥 (西咸興)			Sinhŭng Line
1.2	1.2	1.2	1.2	Sap'o	사포 (沙浦)
3.5	2.3	3.5	2.3	Sangsu	상수 (上水)
5.9	2.4	5.9	2.4	Sŏngch'ŏn[6]	성천 (城川)			Pinallon Line
7.6	1.7	7.6	1.7	Hŭngdŏk	흥덕 (興德)	Pinallon	비날론 (-)	Pinallon Line
10.0	2.4	10.0	2.4	Unsong	운성 (雲城)[5]			Pinallon Line
12.0	2.0	12.0	2.0	Ryongsŏng	룡성 (龍城)			Pinallon Line; branch to Hŭngnam
--	--	13.6	1.6	Hadŏk	하덕 (荷德)	Ch'ŏngiri	천기리 (天機里)
15.6	3.6	--	--	Hŭngnam	흥남 (興南)			P'yŏngra Line
--	--	15.3	1.7	Naeho	내호 (內湖)			Closed.
--	--	17.6	2.3	Sŏho	서호 (西湖)	Sŏhojin	서호진 (西湖津)	P'yŏngra Line

Rolling stock

The line uses Charyokkaengsang-class locomotives (자력갱생) originally built by Kim Chong-t'ae Electric Locomotive Works. They have 551 kW motors and haul a number of passenger cars. These locomotives underwent complete body replacement by the 8 February Vinylon Factory and the Hamhung Narrow Gauge Office in 2017 and received a blue and white exterior along with the reconstruction of the line.^[5] Previously, the locomotives were yellow and red.^[7] A total of 8 locomotives and 22 passenger cars which were overhauled.^[4]