“The three large guns shown in this picture commanded the only point in the harbor that was out of reach from Fort Moultrie on one side, and Fort Johnson on the other. The Yankees were entirely unaware of the existence of these three guns, and when the United States ship ‘Keokuk’ attempted to pass through that part of the channel which could not be reached by the guns from the forts above mentioned, she was sunk by the shots from these three guns.” – Conrad Wise Chapman, 1898
