Construction on the world's largest ship tunnel, which will allow some cruise ships to pass through, is set to begin in early 2027. The proposed tunnel will be built in Norway and will be over a mile long, 165 feet high, and 120 feet wide. The Stad Ship Tunnel will cut through solid rock on the Stadlandet Peninsula and allow cargo vessels, ferries, and cruise ships to bypass the Stadhavet Sea, some of the most dangerous waters off Norway's coast. 81% of ship traffic will reportedly be able to use the tunnel. 'AF Gruppen' was recently awarded the contract for the tunnel. The construction cost of the tunnel is expected to be about $900 million. It's unclear exactly how long it will take to complete the tunnel; however, the Coastal Administration previously estimated that construction would take about five years.