Kominato Line

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Kominato Line
Kominato Railway line.JPG
KiHa 200 diesel cars on the Kominato Line
Native name 小湊鉄道線
Type Passenger
Termini Goi
Stations 18
Opened 1925
Owner Kominato Railway
Line length 39.1 km (24.3 mi)
Number of tracks Single
Track gauge 1,067 mm (3 ft 6 in)
Electrification None
Route map
Uchibō Line
0.0 Goi
2.5 Kazusa-Murakami
Nishihiro Station-1944
5.4 Amaariki
7.2 Kazusa-Mitsumata
8.6 Kazusa-Yamada
Futsukaichiba Station-1944
10.6 Kōfūdai
12.4 Umatate
Saze Station-1944
16.4 Kazusa-Ushiku
18.5 Kazusa-Kawama
20.0 Kazusa-Tsurumai
22.0 Kazusa-Kubo
23.8 Takataki
25.7 Satomi
27.5 Itabu
29.8 Tsukizaki
32.3 Kazusa-Ōkubo
34.9 Yōrōkeikoku
39.1 Kazusa-Nakano
Isumi Line

The Kominato Line (小湊鉄道線 Kominato Tetsudō sen?) is a railway line in Chiba Prefecture, Japan, operated by the third-sector Kominato Railway (小湊鐵道 Kominato tetsudō?). It extends from the west coast of central Bōsō Peninsula (where it connects with the Uchibō Line at Goi to Kazusa-Nakano in the town of Ōtaki (where it connects to the Isumi Line). All of its stations with the exception of the Kazusa-Nakano terminus are within the city of Ichihara. Diesel cars manufactured between 1961 and 1977 run through the scenic hilly areas of Bōsō Peninsula, and the line has many antique station buildings.


Station Japanese Distance
Transfers Location
Goi 五井 0.0 Uchibō Line Ichihara Chiba Prefecture
Kazusa-Murakami 上総村上 2.5  
Amaariki 海士有木 5.4
Kazusa-Mitsumata 上総三又 7.2
Kazusa-Yamada 上総山田 8.6
Kōfūdai 光風台 10.6
Umatate 馬立 12.4
Kazusa-Ushiku 上総牛久 16.4
Kazusa-Kawama 上総川間 18.5
Kazusa-Tsurumai 上総鶴舞 20.0
Kazusa-Kubo 上総久保 22.0
Takataki 高滝 23.8
Satomi 里見 25.7
Itabu 飯給 27.5
Tsukizaki 月崎 29.8
Kazusa-Ōkubo 上総大久保 32.3
Yōrōkeikoku 養老渓谷 34.9
Kazusa-Nakano 上総中野 39.1 Isumi Line Ōtaki
  • All trains stop at every station.

Rolling stock[edit]

As of 1 April 2016, the railway owns and operates a fleet of 14 KiHa 200 series diesel cars, numbered 201 to 214.[1] All except cars 209 and 210 are air-conditioned.[1]

From 15 November 2015, a Satoyama Torokko (里山トロッコ?) open-sided tourist train hauled by a replica steam locomotive powered by a diesel engine entered service on the line, operating generally at weekends only.[2] The train consists of four coaches, two of which have open sides, with a total capacity of 144 passengers. It is hauled by diesel locomotive number DB4, a replica of a German Orenstein & Koppel-built steam locomotive formerly operated on the line from 1924 until the 1940s, powered by a Volvo diesel engine.[3]


Plans for a railroad bisecting the Bōsō Peninsula were drafted by the Railway Ministry in the Meiji period, with the aim of connecting the town of Kominato (now part of Kamogawa City), a town facing the Pacific and famous as the birthplace of Nichiren, for economic and military reasons. However, due to lack of profitability of other lines in the area, the idea was shelved.

The project was revived in 1917 by noted entrepreneur Yasuda Zenjirō, who used the financial resources of the Yasuda zaibatsu to fund over half of the construction costs, and who imported two steam locomotives from the Baldwin Locomotive Works in Philadelphia, Pennsylvania to run on the new line.

On 7 March 1925, the first stage of construction from Goi to Satomi was completed. The line was extended to Tsukizaki on 1 September 1926 and reached its present eastern terminus at Kazusa-Nakano on 16 May 1928. At Kazusa-Nakano, the line connected with the Japanese Government Railways Kihara Line, which provided a route to the eastern shore of the Bōsō Peninsula and so plans to extend the line further to Kominato Town were subsequently abandoned.

In 1942, the line was forced to merge with the Keisei Electric Railway, and remained a subsidiary of that company after the end of World War II. On 21 March 1962, its old steam locomotives were retired (and are currently on display at Goi Station). Freight operations were phased out by 1 October 1969. A new ATS was installed in early 1995. On 12 April 2006, heavy rains washed away a portion of the tracks between Kazusa-Nakano and Yōrōkeikoku, leading to a two-month disruption in services.


  1. ^ a b 私鉄車両編成表 2016 [Private Railway Rolling Stock Formations - 2016] (in Japanese). Japan: Kotsu Shimbunsha. 25 July 2016. p. 22. ISBN 978-4-330-70116-5. 
  2. ^ 小湊鐵道「里山トロッコ」デビュー! 煙を上げ、汽笛鳴らして上総牛久駅発車 [Kominato Railway "Satoyama Torokko" debut!]. Mynavi News (in Japanese). Japan: Mynavi Corporation. 15 November 2015. Retrieved 16 November 2015. 
  3. ^ Kanemori, Takayuki (5 September 2015). 小湊鉄道:里山に再生SL ディーゼル化トロッコがけん引 [Kominato Railway to run diesel-hauled open-sided train]. Mainichi Shimbun (in Japanese). Japan: The Mainichi Newspapers. Retrieved 10 September 2015. 

External links[edit]