Eighteen shells in the night, twenty-eight in the afternoon
The shelling that began at eleven the previous night went on at half-hour intervals until six in the morning — eighteen shells, one short, nine of them duds. At 3.25 in the afternoon three guns on Cumming’s Point opened again, sometimes together, sometimes a minute apart, and threw twenty-eight more. Fifteen did not explode.
Journal of Operations in Charleston Harbor, OR I, 35, Pt. 1