Immersed tube
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An immersed tube is a kind of undersea tunnel composed of segments, constructed elsewhere and floated to the tunnel site to be sunk into place and then linked together. They are commonly used for road
Construction of segments for the second Coen Tunnel in Amsterdam
Prefabricated tunnel segments sealed off, ready to be floated to site and sunk into place
Öresundsförbindelsen under sundet
Goega Bridge Submarine Tunnel 2
Fehmarn Belt fixed link
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The Fehmarn Belt fixed link or Fehmarn Belt tunnel is an under-construction immersed tunnel, which will connect the Danish island of Lolland with the German island of Fehmarn, crossing the 18-kilometr
Immersed tube
…immersed tube, at 41 metres (135 ft) below water level and 5.8 kilometres (3.6 mi) long. The length of both the HZMB and SZB will be surpassed by the Fehmarn Belt Fixed Link connecting Denmark and Germany when it is completed, at an as-designed 17.6 kilometres (10.9 mi) long. Construction started on 1 January 2021. Submerged…
The under-construction entrance to the tunnel