Hurtigruten hopes to use dead fish and organic waste to power some of its ships.

The cruise line is backing the use liquified biogas (LBG) – fossil-free, renewable gas produced from dead fish and other organic waste.

It believes that by 2021, at least six ships in its 17-strong fleet could be powered by LBG, LNG and large battery packs.

Hurtigruten CEO Daniel Skjeldam said: “What other see as a problem, we see as a resource and a solution. By introducing biogas as fuel for cruise ships, Hurtigruten will be the first cruise company to power ships with fossil-free fuel.

“Renewable biogas is a clean source of energy, considered the most eco-friendly fuel currently available. Biogas is already used as fuel in small parts of the transport sector, especially in buses.

“Northern Europe and Norway, which has large fishery and forestry sectors that produces a steady volume of organic waste, has a unique opportunity to become world leader in biogas production.

“While competitors are running on cheap, polluting heavy fuel oil, our ships will literally be powered by nature. Biogas is the greenest fuel in shipping, and will be a huge advantage for the environment. We would love other cruise companies to follow.”

Hurtigruten is currently building three hybrid-powered expedition cruise ships at Norway’s Kleven Yard. MS Roald Amundsen, MS Fridtjof Nansen and the third, unnamed sister, will be delivered in 2019, 2020 and 2021.

MS Roald Amundsen will be the world’s first battery-hybrid powered cruise ship.