A sailing trip with the Imme Gram [da] and the then newly found Skuldelev wrecks became the inspiration for the creation of Sebbe Als.

She was built with copies of the original tools, mainly adzes, manufactured by the local blacksmith after Viking age finds.

The Guild also owns a smaller Viking ship - or, more correctly, a Fareoe boat - the Ottar Als, which is used for training, or simply for pleasure.

As a result, Sebbe now has a 45 m2 square sail with only the top yard, and the steering oar has an angle of approx.

Sebbe Als is not very good at tacking; at the best of times she can go only 45 degrees to the wind, but the speed is impressive, as she is approximately twice as fast as the original calculations indicated.

The type of ship is so unusual nowadays that the Danish Maritime Authority has set special rules for crew and equipment.

Every year Sebbe Als undertakes a summer cruise, usually of 1 – 3 weeks duration, and has travelled along most of the Danish and north German coasts.

The longest travel voyage of Sebbe Als went to the United States - she participated in the bicentennial celebrations in 1976, mainly sailing on the Hudson River at New York City as a guest of the Hudson River Sloop Clearwater, the folk singer Pete Seeger and the Clearwater Organization.