INTRACOASTAL WATERWAY
Project depths for the Intracoastal Waterway (ICW) are 3.6 meters/12 feet from Norfolk, Virginia to Fort Pierce, Florida 3 meters/10 feet from Fort Pierce, Florida to Miami, Florida and 2.1 meters/7 feet from Miami, Florida to Cross Bank, Florida Bay.
Consult the U.S. Army Corps of Engineers for controlling depths and U.S. Coast Guard Local Notice to Mariners for other navigation hazards or restrictions. 
Mileage distances along the ICW are in Statute Miles, southward from Norfolk, Virginia.  Tables for converting Statute Miles to International Nautical Miles are given in U.S. Coast Pilot 4.
