Small ship firm claims to be the first luxury line in the world to resume operations since the coronavirus pandemic struck in March.
The company resumes sailing with its first Norwegian voyage from Oslo on Saturday.
It follows Norwegian adventure cruise line Hurtigruten also restarting operations in its home country.
SeaDream initially planned to sail in Norway with only one ship, SeaDream I, for nine voyages this summer.
However, SeaDream II was added to double capacity and meet “overwhelming demand” after the first cruises started to quickly sell out.
Seven and 12-day voyages will run along the Norwegian coast as far north as Tromso above the Arctic Circle.
The 112-passenger superyachts are able to quickly adapt their itineraries to comply with government regulations.
They can also visit exclusive destinations that other ships are not able to reach due to their size.
SeaDream chose Norway this summer for its extremely low incidence of Covid-19 with destinations hand-picked by founder and chief executive Atle Brynestad.
The pause in operations gave crew the opportunity to “hone their skills, rejuvenate the yachts, and completed WHO’s [World Health Organisation] official Covid-19 course for hygiene procedures and infection management,” the line said.
President Andreas Brynestad added: “We are very proud to be the first luxury line to resume operations. Our preparation has paid off as we are able to maintain the experience of luxury onboard while ensuring everyone’s health, comfort, and safety.
“Everyone around the world has been affected by the health crisis. This historic moment feels like good news not just to our team, but our industry as a whole.”