Beauregard reports the David
At 7.12 in the evening: “Last night Lieutenant Glassell, C. S. Navy, gallantly attempted to blow up the Ironsides with the small cigar torpedo-boat David. Explosion occurred at proper time, but either charge was too small” or the ship too strong. The attack failed, and it changed naval warfare anyway.
Official Records, Series I, Vol. 28, Pt. 1