[aa3jy]

Are you referring to Knapps Narrows?

 

[aa3jy]

No, not Knapps Narrows. The GPS coordinate is N 38 43' 56.6". W 076 20' 56.9"

There is reported shoaling on the charts..but nothing really to be concerned about unless you draw over 7 feet.

I've been thrue there lots of times don't recall anything less than 8 foot depth in the area of concern. I'd be more concerned about the western portion of Knapps Narrows especially around the 15ft R '4'.