Norway's DNB Bank has reversed impairments of NOK 384m ($47.44m) on financial losses in the first half as offshore and oil and gas markets saw a "slight improvement."

The figure in the same six months of 2017 was an impairment of NOK 1.16bn.

The second quarter reversal was NOK 54m, against a loss of NOK 587m the year before.

The bank said the reversals primarily related to large corporates and international customers.