Video taken at the combined 1973 F3F/F3B Nordic Championship held in Hanstholm, Denmark.
Ottar Stensbøl from Norway won the F3F and Knut Lund from Norway won the F3B.
This is before the days of electric winches so we have highstart runners bringing the gliders up in the air.
[youtube]https://www.youtube.com/v/c-rhN0z_oIE[/youtube]
