Natural and artificial changes—many of them critical—are occurring constantly. Shoals shift, channels change and buoys get move, just to name a few. Below are some examples that illustrate such changes. For more information about changes to your chart, visit http://ocsdata.ncd.noaa.gov/nm/nmUpdates.asp.
Channel Dredging — Before and After
Major Shoreline Reconstruction — Before and After
Subsurface Obstructions — Before and After
Marina Changes — Before and After
The U.S. Coast Guard’s Homeland Security designation of restricted security zones.
Download the actual USCG Miami Security Zone flyer
There are three other restricted security zones across Florida and 42 across the U.S.