The video footage is from a flight test conducted on 30 March 2017 at the former naval airbase Valkenburg, Leiden, Netherlands. The footage is recorded by a GoPro video camera mounted on the suspended kite control unit, looking at the kite. At t = 10 s the kite is powered (indicated by the noise from the winch motor) which takes around Δt = 6 s. The powering tensions the rear bridle lines, which can be recognized from the knots moving towards the line of sight to the rear edge of the wing. The wing slightly flattens, increasing its projected span. Once powered, at t = 17 s, the kite dives into crosswind manoeuvres and as a result picks up speed. This is indicated by the increasing flutter noise from the canopy. Video courtesy of Kitepower B.V.