Wave and current classes for specification of ocean fish farming equipment

In design of fish farm sea cages it is frequently referred to the Norwegian Standard, NS9415, for dimensioning relative to site categories defined by
the expected maximum current speed and wave heights. However, this standard only consider waves up to higher than 3m, which is quite modest compared to the maximum wave expected at most fish farming sites in the Faroe Islands. Here (Simonsen, 2020) a suggestion is made to expand the site categories based on the extreme wave and maximum estimated tidal currents estimated by numerical models for the Faroe area.