Polar diagram viewer
Load a polar file and see target speeds and best VMG angles for each wind speed.
Coming soon
Free tools
Free sailing tools
No sign-up. Everything runs in your browser.
VMG calculator
Compare velocity made good for different boat speeds and wind angles, upwind and downwind.
GPX / telemetry analyser
Drop in a GPX or CSV track and get speed, VMG and manoeuvres, analysed entirely in your browser.
Coming soon