Category C is restricted to 15nm out to sea. This is the most common course for sea going vessels! The course details are as follows:

Category R-E is restricted to inland waters, dams, rivers, estuaries, tidal lagoons, harbours and up to one nautical mile out to sea in South Africa, for non-commercial vessels.  The entry requirements for the course are: 

Category R is restricted to inland waters, dams, rivers, harbours and tidal lagoons in South Africa, for non-commercial vessels.  The entry requirements for the course are: