Norwegian clean tanker broker Infinity Shipbrokers has seen its earnings jump despite a poor freight market.

The company logged a pre-tax profit of NOK 5m ($600,000) for 2017, according to just-released figures, against a NOK 3m profit one year earlier.

Revenues increased from NOK 9m in 2016 to NOK 13m last year.

Infinity’s success appears to be partly down to the company's strong focus on its clients.