 It was very simple, consisting of two large girders connected together at each end with the gun and its carriage between them.The mount could only traverse 10° inside its fixed, ½-inch (12.7 mm) gun shield and was aimed over the starboard side of the monitor.It was loaded at a fixed angle of 10°, but it could only fire between 22° and 45° to equalize the stresses on the carriage and the ship.