Re: 5"5" draft too much for mid & upper Chessie?
The typical keel depth for the Upper Ches. is 6ft., deeper than 6ft. means that you run aground a wee bit further from the shore.
With only 3 'rocks' on the entire northern bay ... it really makes no difference.
The only 'tricky' area is the Susquehanna Flats / Harve de Grace area at the extreme head of the bay with its shifting mud shoals that are due to the Susquehanna River dumping massive amounts of silt behind the Conowingo Dam ... and which the mud/silt is now 'overtopping' the dam.
Hurricane Floyd in 1999 filled in a lot of creeks, but have continued to scour out and most 6+ ft. draft sailboats never sailed or anchored in them.
The typical keel depth for the Upper Ches. is 6ft.