Table of Contents (click to expand)The Tunneling ShieldThe Prefabricated Tunnel And ‘Moles’ Tunnels can be constructed using various methods that depend on the materials used, the tunnel’s purpose, and its type. The most commonly used method involves building a tunnel on the ground and placing it underwater. Ships and ferries are vulnerable to high tides and storms that can easily swallow them. In 1954, five ferries were lost in the Tsugaru Strait, the body of water between Hokkaido Island and Aomori Prefecture, due to typhoons. The public was outraged; building a bridge was not an option due to the destructive winds. Therefore, building a … Continue reading How Are Underwater Tunnels Built?