Since there hasn’t been any wind recently, I decided to write a guide about GPS devices and focusing on speed sailing. I had the idea about a year ago but I never seemed to have the time or inclination to write it until now. ;)

It covers a mixture of topics, some of which are listed below:
- Basic principals and common misconceptions
- Device comparisons (features, pros and cons)
- Appendices: Doppler, spikes, grid effect, etc.
- Glossary of GPS terms

Hopefully some of you will find it interesting or useful. Any feedback welcome!