December 10, 2019December 12, 2019 by trude

Statfjord C installed

Norwegian Petroleum Museum

Eight large tugs with a combined output of 110 000 horsepower were needed to move Statfjord C securely from Vats near Stavanger to the North Sea field, where it was installed north of the A and B platforms.

— Statfjord C is installed. Photo: Norwegian Contractors/Norwegian Petroleum Museum

The structure had a displacement of 775 000 tonnes during the tow, and only 135 metres of its total height of 272 metres were visible above the sea when it set off.

Because the weather turned unfavourable during the tow, the platform and tugs had to wait for better conditions about 20 nautical miles south of its final destination. The structure was then lowered further into the sea to improve its stability.

After a 10-day voyage, Statfjord C was installed on 10 June just 9.5 metres from the position which had been calculated in advance as the ideal spot.

To learn more, see: Building Statfjord C .

Sources:
Drzwi, Wenche (ed). Økonomisk-politisk kalender for årene 1964-1990. Statistics Norway note no 17 2005, p 56.
Photo series ”Building Statfjord C” on Statoil’s website.