The Japan–Korea Undersea Tunnel, or Korea–Japan Undersea Tunnel, is a proposed tunnel project to connect Japan with South Korea via an undersea tunnel crossing the Korea Strait that would use the strait islands of Iki and Tsushima, a straight-line distance of approximately 128 kilometers (80 mi) at its shortest.

The Jeju Undersea Tunnel (제주해저터널) is a proposed undersea tunnel project to connect the South Korean provinces of South Jeolla and Jeju across the Jeju Strait, with intermediate stops at the islands of Bogildo and Chujado. [1]

An underwater tunnel is a tunnel which is partly or wholly constructed under the sea or a river. They are often used where building a bridge or operating a ferry link is unviable, or to provide competition or relief for existing bridges or ferry links. [1]

Apr 23, 2024 · Takeuchi is an expert who built Japan's Seikan Tunnel, which passes through the Tsugaru Strait between Japan's Honshu and Hokkaido islands and connects the two. He and his team have done preliminary research on the feasibility of the Korea-Japan tunnel.

Nov 30, 2021 · The Boryeong tunnel is 1.5 km longer than the 5.46-km-long Incheon North Port Undersea Tunnel, west of Seoul, which is currently the longest underwater tunnel in South Korea. Worldwide, the Boryeong tunnel is the fifth longest undersea tunnel for vehicle traffic after the Tokyo Bay Aqualine (9.5 km) in Japan, Bomlafjord Tunnel (7.8 km) in ...

Nov 22, 2021 · The 6.9 km-long Boryeong tunnel, the longest undersea tunnel in Korea, will open on Dec. 1 after 11 years of construction. The tunnel connects Daecheon port with Wonsan Island in Boryeong, South Chungcheong Province.

Dec 27, 2021 · SEOUL, Nov. 30, 2021 (YONHAP) - Authorities announced that South Korea's longest underwater tunnel has been opened on the west coast.

Jun 10, 2019 · Construction to penetrate one of the two tubes of the nation’s longest undersea tunnel, the Boryeong Undersea Tunnel in South Chungcheong Province has been completed seven years after ground was first broken for the project.

Feb 9, 2010 · Momentum is mounting for plans to construct an undersea tunnel connecting Japan and Korea. A 200km undersea tunnel running from Busan in South Korea to the Japanese Island of Kyushu would link the two countries by a high-speed rail line.

Dec 1, 2021 · South Korea now has one of the longest subsea road tunnels in the world. After more than a decade of construction, 'Boryeong Undersea Tunnel' finally opened to the public. Han Seong-woo...