| Kominato Line | |
| Native Name: | 小湊鉄道線 |
| Native Name Lang: | ja |
| Type: | Passenger |
| Locale: | Chiba Prefecture |
| Status: | In operation |
| Stations: | 18 |
| Open: | 1925 |
| Character: | Rural |
| Owner: | Kominato Railway |
| Operator: | Kominato Railway |
| Linelength: | 39.1km (24.3miles) |
| Tracks: | Entire line single tracked |
| Stock: | KiHa 200 series DMU, KiHa 40 series DMU |
| Speed: | 65 km/h (40 mph) |
| Electrification: | None |
The is a railway line in Chiba Prefecture, Japan, operated by the private railway operator . It extends from the west coast of central Bōsō Peninsula (where it connects with the Uchibō Line at) to 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 (km) | Transfers | Location | |
|---|---|---|---|---|---|
| 五井 | 0.0 | Uchibō Line | Ichihara | Chiba Prefecture | |
| 上総村上 | 2.5 | ||||
| 海士有木 | 5.4 | ||||
| 上総三又 | 7.2 | ||||
| 上総山田 | 8.6 | ||||
| 光風台 | 10.6 | ||||
| 馬立 | 12.4 | ||||
| 上総牛久 | 16.4 | ||||
| 上総川間 | 18.5 | ||||
| 上総鶴舞 | 20.0 | ||||
| 上総久保 | 22.0 | ||||
| 高滝 | 23.8 | ||||
| 里見 | 25.7 | ||||
| 飯給 | 27.5 | ||||
| 月崎 | 29.8 | ||||
| 上総大久保 | 32.3 | ||||
| 養老渓谷 | 34.9 | ||||
| 上総中野 | 39.1 | Isumi Line | Ōtaki | ||
, the railway owns and operates a fleet of 14 KiHa 200 series diesel cars, built by Nippon Sharyo between 1961 and 1977, and numbered 201 to 214.[1] All except cars 209 and 210 are air-conditioned.[1]
| Number | Manufacturer | Build date | Length (mm) | Weight (t) |
|---|---|---|---|---|
| 201 | Nippon Sharyo | 1961 | 20,000 | 30.0 |
| 202 | ||||
| 203 | 1963 | |||
| 204 | ||||
| 205 | ||||
| 206 | ||||
| 207 | 1970 | |||
| 208 | ||||
| 209 | ||||
| 210 | ||||
| 211 | 1975 | |||
| 212 | ||||
| 213 | 1977 | |||
| 214 |
| Number | Manufacturer | Build date | Length (mm) | Weight (t) |
|---|---|---|---|---|
| 40-1 | 1987 | 21,300 | 38.6 | |
| 40-2 | ||||
| 40-3 | ||||
| 40-4 | ||||
| 40-5 |
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.
The Kominato Railway was founded on 31 May 1917, opening the initial section of the line from to on 7 May 1925.[10] The line was extended to on 1 September 1926, and reached its present eastern terminus at on 16 May 1928.[10] Diesel railcars were introduced on the line from this date.[10] 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, the remaining steam locomotives were retired (and are currently on display at Goi Station).[10] Freight operations were phased out by 1 October 1969.[10] 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, leading to a two-month disruption in services.
In 2017, the line received a Good Design Award from the Japan Institute of Design Promotion.[11]