Earnings before interest, tax, depreciation and amortisation hit Nkr822 million ($122.6 million) in July to September, from Nkr539 million a year earlier.
The result beat all forecasts of Nkr704 million to Nkr815 million in a Reuters poll of analysts.
"Aker Kvaerner's markets continue to be driven by growth in international energy demand and depletion of existing oil and gas fields," Aker Kvaerner said.
"The