Oslo-listed DNB Bank has logged a doubling of its loan and guarantee impairments for the first quarter in difficult shipping markets.

The figure stood at NOK 1.17bn ($143.75m) at 31 March, up from NOK 575m in 2015.

Collective impairment losses made up 55% of this, while there was an increase in individual losses withing shipping, offshore and energy.

Adjusted for the sale of portfolios of non-performing loans, impairment losses totalled NOK 1.74bn