Ok you can test it out:
http://www.subsim.com/radioroom/down...o=file&id=1699
Just keep in mind that im working on a more robust version. Both in the computed solution and UI friendliness.
Also: a few things have changed since the screenshots posted. The range scale at the top left is gone, the display is no longer zoomable with the mousewheel. The red line doesn't turn solid and move to its correct range once you input it. Displaying it at the correct range was a useless feature, and only forced you to zoom in and out. Instead the lines will scale to fit the bearing wheel.
kylania:
You might wanna redownload it, i made two small updates to it since your copy.
1. The lines are anti-aliased now.
2. The predicted bearing and estimated course readouts are not rounded anymore.