The is a long undersea railway tunnel under the Kanmon Straits connecting Shin-Shimonoseki Station and Kokura Station. At the time of opening in March of 1975, it was the longest railway tunnel in Japan before being overtaken by in 1988 the opening of the Seikan Tunnel. It is also the longest tunnel section on the entire

Sanyo is a former Japanese electronics manufacturer founded in 1947 by Toshio Iue, the brother-in-law of Kōnosuke Matsushita, the founder of Matsushita Electric Industrial, now known as Panasonic. Iue left Matsushita Electric to start his own bu ...

/ Tokaido Shinkansen line.

Overview

* Starting point: Ichinomiya Gakuencho, Shimonoseki City,

Yamaguchi Prefecture is a Prefectures of Japan, prefecture of Japan located in the Chūgoku region of Honshu. Yamaguchi Prefecture has a population of 1,377,631 (1 February 2018) and has a geographic area of 6,112 Square kilometre, km2 (2,359 Square mile, sq mi). ...

* End point: 2-chome, Shimotomino, Kokurakita-ku, Kitakyūshū,

Fukuoka is the List of Japanese cities by population, sixth-largest city in Japan and the capital city of Fukuoka Prefecture, Japan. The city is built along the shores of Hakata Bay, and has been a center of international commerce since ancient times. ...

* Overall length: * Undersea bed section: * Below sea level section: * Tunnel gradient: 18/1000 *

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: 1,435 mm * Electrification: 25 kV AC, 60 Hz, overhead catenary The construction of the new tunnel started as a project to connect

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and Kyushu with a high-speed railway. The tunnel was constructed at the shortest section in the Kanmon Strait between Dannoura, Shimonoseki City - Mekari, Mojiku, Kitakyushu. Although the entire Shin-Kanmon Tunnel is 5 times longer, the undersea section is shorter than the conventional line Kanmon Tunnel (the Kanmon Tunnel undersea bed section is long). There is a distance marker about from the middle point of the tunnel. This is the only 1000 km railway marker in Japan. Kanmon-tunnel

Coordinates

* Shimonoseki entrance: * Moji entrance:

References

{{Tunnel-stub Railway tunnels in Japan Undersea tunnels in Japan West Japan Railway Company Sanyō Shinkansen 1975 establishments in Japan Transport in Kitakyushu Transport in Shimonoseki Buildings and structures in Kitakyushu Buildings and structures in Shimonoseki Tunnels in Fukuoka Prefecture Tunnels in Yamaguchi Prefecture Kanmon Straits