Equinor ordered the topsides for its giant Johan Sverdrup project to be built in one piece before a vessel existed that could lift them in place. Now the gamble is paying off.

This weekend, the Allseas-operated mammoth lifting vessel Pioneering Spirit is set to install both the P1 28,000-tonne processing platform deck and the 12,000-tonne living quarter topsides at the Johan Sverdrup field in the Norwegian North Sea.