More historic it does not get. Charleston still has an active shrimping fleet and shrimpers regularly pass Fort Sumter. Part of the main shipping channel is Rebellion Reach another historic reminder. On the far bank of the Cooper River is Patriot's Point where the main attraction is the World War II Aircraft Carrier Yorktown. Unlike Great Lakes Sailing Charleston harbor features an array of tides and current.
Locals speak of flood and ebb tides, eddies, tide lines etc.
As you travel the harbor you see foamy tide lines running different directions throughout the day. On the Charleston side of the Cooper River you see the customs house where Around Alone skippers are honored before and after their race. This is also where the Charleston Harbor Pilots are based. The pilots begin guiding ships when they are 8 miles off Charleston. Perhaps the most lasting image of Charleston Harbor's modern use and historic significance is Castle Pinckney.