A. Sand spit, South Slough. As you leave the Charleston Boat Basin, the South Slough sand spit is on your left. It extends north, parallel to the channel from South Slough buoy #4, approximately 450 yards toward South Slough light #2. Presently, nun buoy #2T marks the north end of the sand spit. Do not cross this area.
 
B. Submerged jetty. When you proceed out from the Charleston Boat Basin in the South Slough channel, and are directly between South Slough light #4 and can buoy #5, directly ahead will be South Slough light #1, marking the end of the submerged jetty. This jetty is visible only at low water. When departing the Charleston Boat Basin, stay to the left of light #1 at all times.
 
C. Sand spit, north beach. This area is dangerous because of shoal waters and submerged jetties. Occasionally, on a strong ebb, there will be breakers in this area. Avoid this area because of the possibility of going aground or striking submerged jetties and pilings. Note, too, that inbound and outbound tugs with tows, freighters, and so forth, pass close aboard this area and cannot stop for obstructions in the channel—including small vessels.
 
D. South jetty, Guano Rock area. This is a very dangerous area because of shoals that extend out from the south jetty to the entrance channel. Breakers are frequently experienced from Guano Rock lighted whistle buoy #4 extending out to just past the end of the south jetty. Exercise care in this area at all times, especially on ebb tides.
 
E. North jetty, submerged. The north jetty extends approximately 200 yards to the west. The outward end of the jetty is submerged from the visible end of the jetty out toward buoy #3. Never cross this area. There are breakers in this area most of the time. When departing the bar northbound, be sure to pass buoy #3 before turning to the north.
 
F. Area north of buoy #5. This area can be very dangerous when there are any large swells on the bar or during ebb tide. Freak breakers are common in this area. Many boats do transit this area on occasion, but it is strongly recommended that you never cross here.

The Charleston Coast Guard station records weather and bar conditions; you may obtain this information by phoning (541) 888-3102 or (541) 888-3267. KBBR (1340 kHz) broadcasts reports hourly during the summer months and as notified by the Coast Guard. The Charleston Coast Guard station also posts current weather advisories. Weather and wind warning flags are displayed at the Charleston Port office during daylight hours.