In 1979 I began windsurfing on a lake near Goettingen, when I moved to Hamburg in 1986 I started speed-surfing on Fehmarn. In 1987 I won the international Speedweek in Hvide Sande / Denmark.

My best GPS 500m speed is 43.27knots and 5x10s 43.52knots

My new video timing system was used for the 2017 speed challenge in Luderiz and will be used this year again.

M y video-software was still used during different speed competitions when I developed from 2004 GPSResults for GPS-based speed-measurements. With Dopplerspeeds and other measures like Dopplerspeed-error margins, error bounds can be specified and reliable results for different categories can be achieved with much less financial and technical effort. My software is used for many international speed competitions (e.g. Weymouth / UK, Sweden, Greece, Germany) and as engine for the GPSSpeedSurfing website. I also developed the Android-App GPSLogIt that can be used as a cheap entry to measure speed and that can be used for online rankings.