Oslo-listed BWO booked net profit of $22.3m for the three months to 30 June against a loss of $47.6m in the second leg of 2012.
Earnings before income tax, depreciation and amortization (ebitda) soared to $107.7m from $29m in the year ago period.
Revenues were up by around 15% to $255.1m from $222.5m.
The Oslo-listed company has seen previous earnings reports scarred by delays and higher costs on an FPSO at Cosco Dalian shipyard in China.
But
