Norway's Kleven shipyard is struggling with heavy losses on two exploration cruiseships for domestic Hurtigruten.

The first of the two 20,900-gt ships, Roald Amundsen, was delivered from the yard this summer, one year late, due to technical problems.

Kleven has not delivered its accounts before 2018 by 31 July, but according to the Norwegian daily, Dagens Naeringsliv, the accumulated losses for the last four years amount to more than NOK 1bn ($118m).