Is there anything I can do with my own installation
to shed some light on this? I have assumed that there isn't anything - but if there is anything productive please suggest...
I assume that a Track as displayed in the Route
and Mark Manager window is generated on the fly - otherwise it would not be possible to change the Leg 0 length by moving the boat position - or importing the GPX file to someone else's OpenCPN installation
with a different boat location.
It should therefore be possible to see the actual GPS
position listing from which the Track is computed for display purposes. I note the GPS
positions in the Logfile - in my case at half hourly intervals. These all make complete sense.