The Civil War In America, The U.S. Gun-Boat Weehawken, one of the nine ironclads engaged in the bombardment of Charleston, 2 May, 1863. . This vessel shows only about sixteen inches above water. Her tower revolves by means of a small engine, and its weight rests on the central shaft, the lower portion of which bears on the keelsons. During action all apertures are shut, ventilation being kept up by two fans, which draw in air from the top of the tower, and the boiler-furnace carries out all foul