I'm afraid linking plotted devices to your sub on the nav chart was never implemented, although reading the manual tells you it was part of the plan. As a practical matter, you can usually pick up the last one you plotted and move it to your present position. If not, it takes a second to draw a new one.
Leaving them out there has some utility. Then you can actually quantify how many airplanes you've avoided and where you were at the time. This can help you find areas less traveled by the planes.
|