G-NAV is an electronic flight instrument system (EFIS) for soaring that runs as a progressive web application (PWA) in most mobile web browsers (Chrome, Safari and others). The application can be installed locally in the client browser and it starts up and runs offline like a native app.

G-NAV is almost entirely written in Ada and it is compiled to WASM through AdaWebPack. Furthermore, G-NAV fully relies on WebGL for graphics.

Visit the project website for a demo and more infomation.

There is also a native version of the software that you can find here. The applications are quite similar, although there will be more and more discrepancies as this project evolves.

To operate G-NAV, please read the user's manual located in the docs folder. This document covers the user functions and the web system administration. Be aware that the project is still under development.

G-NAV web consists of two modules: the web application itself and the data compiler. For the web app you will need AdaWebPack. The compilation procedure is similar to that of the examples you will find there. For the data compiler you will need a native Ada FSF compiler.

Keep an eye on the releases, there will be precompiled versions in the future. The provision of data is not part of the project yet, you will need to collect your own dataset to build a functional system.

This software is made possible thanks to:

• Guillermo Hazebrouck for everything in this repo (G-NAV)
• Vadim Godunko and Maxim Reznik for AdaWebPack
• The Ada FSF community