The seas off Norway are among the most hostile on the planet — the mythological thunder god Thor was said to patrol the coastal waters — and in the late-1960s were discovered to be sitting atop vast hydrocarbon reserves that have be developed to transform the country’s economics and create the world’s largest offshore oil & gas operator, Equinor.

But with the climate crisis heightening pressure on the Norwegian government to speed up the steps to reach carbon neutrality and revenues from its biggest industrial sector dwindling due to a coronavirus-collapsed crude market, the ‘other’ great seaborne resource, wind, might get the lift it has long needed to begin a build-out that will one day supply a substantial part of...