The Seikan Tunnel in Japan is the longest tunnel with an underwater section in the world, measuring a total of 53.85 kilometers (33.4 miles) in length, around 23.3 kilometers (14.5 miles) of which ...

M egastructures seem to be a trend in Asia with China building a $6.74bn underwater bridge with tunnels and man-made islands and now Japan is getting in on it with their own long-distance tunnel ...

The Seikan Tunnel in Japan is an extraordinary underwater tunnel. It cost approximately £5.6 billion to construct and links Japan to its northern islands, specifically connecting the islands of ...

Japan boasts the world's longest underwater tunnel, which stretches for more than miles under the seabed of the Tsugaru Strait, but it's now barely being used.. Work on the Seikan Tunnel was ...

Underwater Tunnels: Get here the list of underwater tunnels around the world along with length, ... Japan. The Seikan Tunnel is the world's longest tunnel with an undersea segment. 53.8 km. 240 m.

The Seikan Tunnel is known to be the longest and deepest underwater tunnel in the world, with a length of 53.85 kilometers (33.44 miles). It connects the Japanese islands of Honshu and Hokkaido by ...

Meanwhile, The Channel Tunnel lies from Folkestone, the U.K. to Calais, France with the underwater line at 37.9 kilometers from the total of 50.4 kilometers. The road was built in 1988–1994. Japan; ...

Japan has started sending seawater into an underwater tunnel built to release nuclear-contaminated water into the ocean from the crippled Fukushima Daiichi nuclear power plant, Xinhua quoted local ...

The operator of Japan’s crippled Fukushima nuclear power plant intends to build an underwater tunnel to release water from the plant into the sea, it said on Tuesday, as part of a project to ...