From today on cruise ships with high emissions of NOx and SOx are banned from entering Geirangerfjord and Nærøyfjord, also additional restrictions on other emissions (e.g. wastewater). This may have effect on already booked cruises, if the booked ship doesn't match with new regulations.
Also some additional restrictions on operating behaviours of cruise ships while being in / around these fjords. Further fjords will be checked for that restrictions.
Source: https://www.nrk.no/sognogfjordane/no-skal-smogen-vekk-fra-fjordane-1.14450651