Oslo-listed Siem posted profit of $15.5m for the period between October and December 2014, up from $3.7m in the corresponding quarter.
Quarterly revenue increased from $95m in the fourth quarter of 2013 to $137.7m in the same spell of 2014.
This performance boosted Siem’s annual profit to $70.7m, improving from $21.5m in 2013.
Total revenue stood at $491.3m, increasing by more than $120m year-on-year.
Siem
