# Tenryū Hamanako Line

The Tenryū Hamanako Line (天竜浜名湖線, Tenryū Hamanako-sen), or Tenhama Line (天浜線, Tenhama-sen) for short, is a Japanese railway line in Shizuoka Prefecture, paralleling the north coast of Lake Hamana between Kakegawa Station in Kakegawa and Shinjohara Station in Kosai. This is the only railway line of Tenryū Hamanako Railroad (天竜浜名湖鉄道, Tenryū Hamanako Tetsudō).

## History

The Japanese National Railways Futamata Line (二俣線, Futamata sen) was built as an alternative route for the Tokaido Main Line and in particular as a backup for the bridge over Lake Hamana, which was considered potentially vulnerable to weather disruption. The Japanese military also supported the project as the new line would be less vulnerable to coastal attack than the existing section of the Tokaido Main Line. Operations began on April 17, 1935, between Kakegawa and Enshū-Mori. Construction work progressed in the opposite direction with the Futamata-Nishi Line (二俣線西, Futamata-Nishi sen) connecting Shinjohara with Mikkabi on December 1, 1936. This line was extended to Kaminobe by April 1, 1938, and the two lines were connected on June 1, 1940.
The line was used as a detour for the Tokaido Main Line following damage to it caused by the Tōnankai earthquake in December 1944 and military actions in July 1945.
Steam locomotives ceased service on the line in 1971, and all scheduled freight services were discontinued from 1984.
Operations of the former Futamata Line were taken over by the third-sector company Tenryū Hamanako Railroad in 1987, the same year Japanese National Railways was privatized.
Thirty-six features of the line (including bridges and station buildings) are registered tangible cultural properties of Japan.

### Former connecting lines

* Tenryu-Futamata station – Construction started on a 35 km line to Chubu-Tenryu on the Iida Line in 1967. Proposed to involve 20 bridges and 14 tunnels, about 13 km of roadbed, and about 50% of the overall work had been completed when construction was abandoned in 1980.
* Kanasashi station – The 26 km 762mm gauge line from Entetsu Hamamatsu station on the Enshu Railway Line to Okuyama opened between 1914 and 1923. The 8 km Entetsu Hamamatsu - Hikuma section was electrified at 600 VDC in 1950, the line closing in 1963/4.

## Description

* Track: Single
* Power: Internal Combustion (Diesel)
* Railway signalling: Simplified automatic

## Stations

| Name | Name | Distance (km) | Connecting lines | Location | Location |
| Kakegawa | 掛川 | 0.0 | JR Central: Tōkaidō Shinkansen, Tōkaidō Main Line | Kakegawa | Shizuoka |
| Kakegawa-shiyakusho-mae | 掛川市役所前 | 1.3 | | Kakegawa | Shizuoka |
| Nishi-Kakegawa | 西掛川 | 1.8 | | Kakegawa | Shizuoka |
| Sakuragi | 桜木 | 4.0 | | Kakegawa | Shizuoka |
| Ikoinohiroba | いこいの広場 | 5.5 | | Kakegawa | Shizuoka |
| Hosoya | 細谷 | 6.0 | | Kakegawa | Shizuoka |
| Haranoya | 原谷 | 7.9 | | Kakegawa | Shizuoka |
| Harada | 原田 | 9.4 | | Kakegawa | Shizuoka |
| Towata | 戸綿 | 12.0 | | Mori Shūchi District | Shizuoka |
| Enshū-Mori | 遠州森 | 12.8 | | Mori Shūchi District | Shizuoka |
| Morimachibyōin-mae | 森町病院前 | 13.6 | | Mori Shūchi District | Shizuoka |
| Enden | 円田 | 14.7 | | Mori Shūchi District | Shizuoka |
| Tōtōmi-Ichinomiya | 遠江一宮 | 16.4 | | Mori Shūchi District | Shizuoka |
| Shikiji | 敷地 | 19.9 | | Iwata | Shizuoka |
| Toyooka | 豊岡 | 23.0 | | Iwata | Shizuoka |
| Kaminobe | 上野部 | 24.4 | | Iwata | Shizuoka |
| Tenryū-Futamata | 天竜二俣 | 26.2 | | Tenryū-ku Hamamatsu | Shizuoka |
| Futamata-Hommachi | 二俣本町 | 26.8 | | Tenryū-ku Hamamatsu | Shizuoka |
| Nishi-Kajima | 西鹿島 | 28.5 | Enshū Railway Line | Tenryū-ku Hamamatsu | Shizuoka |
| Gansuiji | 岩水寺 | 30.3 | | Hamana-ku Hamamatsu | Shizuoka |
| Miyaguchi | 宮口 | 32.3 | | Hamana-ku Hamamatsu | Shizuoka |
| Fruit Park | フルーツパーク | 36.2 | | Hamana-ku Hamamatsu | Shizuoka |
| Miyakoda | 都田 | 37.7 | | Hamana-ku Hamamatsu | Shizuoka |
| Tokohadaigakumae | 常葉大学前 | 39.1 | | Hamana-ku Hamamatsu | Shizuoka |
| Kanasashi | 金指 | 41.9 | | Hamana-ku Hamamatsu | Shizuoka |
| Okaji | 岡地 | 43.5 | | Hamana-ku Hamamatsu | Shizuoka |
| Kiga | 気賀 | 44.8 | | Hamana-ku Hamamatsu | Shizuoka |
| Nishi-Kiga | 西気賀 | 47.7 | | Hamana-ku Hamamatsu | Shizuoka |
| Sunza | 寸座 | 49.4 | | Hamana-ku Hamamatsu | Shizuoka |
| Hamanako-Sakume | 浜名湖佐久米 | 50.7 | | Hamana-ku Hamamatsu | Shizuoka |
| Higashi-Tsuzuki | 東都筑 | 51.9 | | Hamana-ku Hamamatsu | Shizuoka |
| Tsuzuki | 都筑 | 53.3 | | Hamana-ku Hamamatsu | Shizuoka |
| Mikkabi | 三ヶ日 | 55.6 | | Hamana-ku Hamamatsu | Shizuoka |
| Okuhamanako | 奥浜名湖 | 56.8 | | Hamana-ku Hamamatsu | Shizuoka |
| Ona | 尾奈 | 58.1 | | Hamana-ku Hamamatsu | Shizuoka |
| Chibata | 知波田 | 62.9 | | Kosai | Shizuoka |
| Ōmori | 大森 | 65.0 | | Kosai | Shizuoka |
| Asumomae | アスモ前 | 66.7 | | Kosai | Shizuoka |
| Shinjohara | 新所原 | 67.7 | JR Central: Tōkaidō Main Line | Kosai | Shizuoka |