The Handbook of South Carolina Boating Laws and Responsibilities
The Official Boating Handbook of the South Carolina Department of Natural Resources - Web Version
Table of Contents
Scuba divers or snorkelers should display a diver-down flag to mark their diving area.
Vessels must remain at least 50 feet away from the flag. If they have to approach the diving area, operators must have permission from the person who placed the flag or the boat displaying the flag.
A rectangular red flag, at least 15 x 15 inches, with a white diagonal stripe is used on state waters of South Carolina.
A blue and white International Code Flag A (or Alfa flag) is required on federally controlled waters.