A nearly 1.1-Mile tunnel that will allow ships and cruise vessels to pass through a mountain

Norway is preparing to begin construction of the world’s first purpose-built maritime tunnel designed specifically for cruise ships and large vessels. Known as the Stad Ship Tunnel, the project is still in the planning phase, but construction is expected to begin in early 2027.

A safer route through severe weather

The tunnel will be located along Norway’s western coast near the Stadlandet Peninsula. This area is considered one of the most dangerous stretches of water for navigation because of powerful winds, frequent storms, and heavy seas that regularly make passage around Cape Stad challenging and hazardous.

Until now, ships had no choice but to navigate around this notoriously unstable section of coastline. Once the tunnel is completed, vessels will be able to bypass the dangerous route and travel safely through the mountain instead. For that reason, Norway’s Coastal Administration, known as Kystverket, emphasizes that the project’s primary purpose is to improve safety for passengers, crews, and vessels.

The tunnel will be approximately 1.1 miles long and about 121 feet wide. These dimensions will allow ships measuring up to 459 feet in length and weighing as much as 16,000 tons to pass through safely and efficiently. According to Norwegian authorities, no comparable structure exists anywhere else in the world.

The structure will measure between 1.7 and 1.8 kilometers in length and will have a width of 37 meters. These dimensions will allow the smooth passage of ships up to 140 meters in length and weighing 16,000 tons. Authorities note there is no other similar construction on the planet.

A major investment

The estimated cost of the investment reaches 8,600 million A major investment

The project carries an estimated price tag of 8.6 billion Norwegian kroner, or roughly $782 million. Although the Norwegian Parliament officially endorsed the project in 2017, construction has been delayed by significant cost increases that triggered years of political debate.

Initial projections placed the cost at around 5 billion kroner, but later estimates pushed the figure above 9 billion kroner. As expenses continued to rise, the government was forced to reassess the project’s viability and even considered redirecting the funding toward maintaining existing transportation infrastructure.

Ultimately, negotiations proved successful after lawmakers agreed on a final budget of 8.6 billion kroner. With the financial hurdles resolved, the project is now moving steadily toward construction.

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