How to deactivate 'red rectangles' in Navionics?

[LongRange]

I use a Navionics+ map with a B&G Zeus 3.

Virtually every port and area of interest is bounded by red rectangles of varying sizes. Many of the rectangles overlap, and virtually all are contained within even larger rectangles.

I gather the purpose is to indicate areas of relatively high map detail. However, the density of those rectangles is such that they are just a meaningless jumble of horizontal and vertical lines, often getting in the way.

Is there a way to deactivate those red rectangles - to prevent them from being displayed? I was not able to find any relevant settings in the B&G Zeus 3 firmware.

This is an image I found online. It illustrates the red rectangles of the type I wish to get rid of, except the density and level of overlap is even higher over here in Greece:





Thanks for all advice.

[rgleason]

Try to go into chart settings and turn off chart outlines.

[LongRange]

Originally Posted by rgleason

Try to go into chart settings and turn off chart outlines.

Thanks, that helped.

For anybody with the same issue, the menu structure is as follows:

Chart options > Settings > Chart Details > User > Chart Boundaries (on/off)

In my case that setting was already OFF, but I found that going to ON and then OFF again did the trick. The firmware in my Zeus3 unit is v1.1 but I just downloaded v1.5 to upgrade when this trip is over in a couple of days.