Norway’s Fjord Line has been forced to spend money adding dual-fuel capability to its increasingly expensive LNG-powered ships.

The ropax company said the rising price of gas has led to a “non-sustainable financial situation”.

It has decided to “rebuild” the 32,500-gt Stavangerfjord (built 2013) and Bergensfjord (built 2014) to allow them to also run on marine gasoil (MGO).