Three 12-inch guns were mounted at Fort Mott between February and June, 1898. The guns and carriages were unloaded from vessels at the government wharf, transported down rail lines behind the parapet, and hauled up inclined trestles constructed at each emplacement. The 12-inch gun was Model 1888, with an overall length of 36.66 feet, a weight of 116,480 pounds, muzzle velocity of 1,975 feet per second, maximum recorded range fired of 17,320 yards (9.8 miles), projectile weight of 1,000 pounds, powder charge weight of 450 pounds, and chamber pressure of 27,040 foot tons. The 12-inch disappearing carriage was Model 1896, with a loading angle of 5 degrees, firing angle of -5 to +15 degrees, traverse of 115 degrees, weight of 480,900 pounds, a 3 inch telescope sight Model 1904, and counterweight of 162,280 pounds. General Lewis G. Arnold, born in New Jersey, was a Military Academy cadet from 1833 to 1837, graduated and was promoted in the Army to Second Lieut., 2d Artillery, served with distinction in the Florida, Mexican and Civil Wars, and attained the rank of Brigadier-General of Volunteers in 1862.