Measurements on sails from Viking Ships

In conection with aerodynamic studies of the sails of a viking ship, a description of the sails shape has to be given under different conditions of wind, cource and waves. The sail on a replica of a viking ship is measured by means of photogrammetry and pictures taken from an other boat. The 3-dimensional shape is then derived from the pictures. Test measurements has been going on, and the final measurements under different wind, coarce and wave conditions are scheduled to take place during summer 1997 or summer 1998 depending on weather conditions.