[ActiveCaptain]

Here's what you should do. Pick the highest detail chart for the ICW - let's say south of West Palm Beach. The icw charts there are narrow strips just showing the ICW and the area immediately adjacent. Pan down the ICW as if you're looking ahead - a pretty common thing to do. You'll come to the edge of the chart segment and will naturally want to move to the adjacent chart and continue looking ahead. Try that a few times and see what it's like. Make sure to even try it in a place where the high res chart is skewed differently. It's even more fun then because you lose perspective of where you are since there's no rotation. I think you'll understand the issue pretty quickly.

This type of panning is very common when traveling along the ICW.