For some time now, the SSECN has had a “Navigation Alert” posted for less than expected depths on the AICW, south of Fernandina Beach, Florida, near marker #18 (see /?p=32494). Now our stratigic partners, Captains Mark and Diana Doyle, originators and owners of On The Water ChartGuides, give some fresh evidence that this shoaling is for real, Pay particular attention to the screen shot that comes from their very nifty recording sounder!

Shoaling South of Mooring Field
Although we recorded depths of 13 to 15 feet throughout the mooring field (at 3.6 above MLLW), we encountered extensive shoaling along the magenta line in the channel area southbound of the mooring field. You can see on the accompanying screenshot’s depth-annotated track some 10- and 11-foot soundings (at 3.6 above MLLW) in two areas. These humps roughly translate to about 6 feet at MLLW. They come up fast and are a bit breath-taking, given the largely deeper surrounding water.

Click Here To Open A Chart View Window, Zoomed To A “Navigation Alert” Position on the AICW/Amelia River