This means that anyone with an SL card valid for at least 30 days can use it as a travel certificate on the boats between 16 September and 7 May. The SL card, on the other hand, does not apply during the intense summer months.
The purpose of the trial periods has been to attract more visitors to the archipelago during the off-season, which allows, among other things, for inns and boarding houses to extend their seasons.
During the first test period between January and April 2018, the number of travelers increased by 20 percent, more specifically 45,000 travelers, compared with the same period the year before.