The Arkansas' battery, as given, depends upon independent and agreeing statements of two of her division officers. A third differs very slightly.
[13] Commanded by Lieutenant Henry Erben.
CHAPTER V.[ToC]
THE MISSISSIPPI OPENED.
Flag-Officer Davis had been relieved in command of the Mississippi flotilla on the 15th of October, by Commander David D. Porter, holding the local rank of acting rear-admiral. The new commander was detained in Cairo for two months, organizing and equipping his squadron, which had been largely increased. A division of vessels was still stationed at Helena, patrolling the lower river, under the command of Captain Henry Walke.
During the fall of 1862 and the following winter, two new types of vessels were added to the squadron. The first, familiarly called tinclads, but officially light-draughts, were river stern-wheel steamers purchased for the service after the suggestion of Flag-Officer Davis, and covered all round to a height of eleven feet with iron from half to three-quarters of an inch thick, which made them proof against musketry. The protection around the boilers was increased to resist the light projectiles of field artillery. They quartered their crew comfortably, and could on a pinch, for an expedition, carry 200 men. The usual battery for these vessels was six or eight 24-pound brass howitzers, four on each side, with sometimes two light rifled guns in the bows. This armament was of little use against works of any strength, but with canister or shrapnel could keep off the riflemen, and meet on equal terms the field artillery brought against them on the banks of the narrow streams, often thickly timbered or covered with underbrush, into which they were called to penetrate and engage in that kind of warfare significantly called bushwhacking. For this service their light draught, not exceeding three feet when deep, and diminishing to eighteen or twenty inches when light, peculiarly fitted them; but they were also useful in connection with the operations of the larger vessels, and some of them generally went along as a kind of light force fitted for raids and skirmishing.
The other vessels, which were not completed till later, were of an entirely different kind, being intended to supply a class of fighting ships of superior power, armor, and speed to those which had fought their way down to Vicksburg from Cairo. The fighting power of the Confederates had increased, and the successes of the Union arms, by diminishing the extent of their line to be defended, had enabled them to concentrate their men and guns. The defences of Vicksburg, both on the Mississippi and Yazoo, had become greatly stronger. The new armored vessels that were ready for some part of the coming operations were the Lafayette, Tuscumbia, Indianola, Choctaw, and Chillicothe. Of these the Tuscumbia, of 565 tons, the Indianola, of 442, and the Chillicothe, of 303, were specially built for the Government at Cincinnati. They were side-wheel, flat-bottomed boats, without keels; the wheels being carried well aft, three-fourths of the entire length from the bow, and acting independently of each other to facilitate turning in close quarters. The Indianola and Tuscumbia had also two screw propellers. On the forward deck there was a rectangular casemate, twenty-two feet long in each vessel, but of differing widths, as the vessels were of different size. Thus that of the Tuscumbia was sixty-two feet wide, that of the Chillicothe only forty-two. The sides of the casemate sloped at an angle of thirty degrees from the perpendicular, and they, as well as the hull before the wheels, were plated with two-or three-inch iron, according to the locality; the heaviest plating being on the forward end of the casemate. In the Tuscumbia this forward plating was six inches thick. The casemates were pierced with ports for all their guns at the forward end only; on each beam one port, and two aft. The ports were closed with two three-inch iron shutters which slid back on tracks on either side. In these casemates the Tuscumbia carried three XI-inch guns, the Indianola and Chillicothe each two XI-inch. In the two larger vessels there was also, between the wheels, a stern casemate seventeen feet long, built of thick oak, not armored on the forward end, but having two-inch plating aft and one-inch on each side. In this stern casemate, pointing aft and capable of being trained four points (45°) on each quarter, the Tuscumbia carried two 100-pound rifles, and the Indianola two IX-inch guns. The hulls inside and abaft the wheels, and the decks, except inside the main casemate, were plated, but more lightly than the forward parts. In the Tuscumbia and Indianola, iron bulwarks, half an inch thick and pierced with loop-holes for musketry, extended all round the boats, except against the wheelhouses; they were so arranged as to let down on deck when desired. When ready for service, with guns and stores on board, these boats drew from five to seven feet of water; but they were so weakly built as to be dangerous and comparatively inefficient vessels, quickly "disabled," as is apt to be the case with such preparations for war as are postponed to the time of its outbreak. The contingency of civil war on our inland waters was not indeed to be anticipated nor prepared for; but what was the history of the ocean navy, on whose hasty creation such harmful boasts and confidence were and are based? They served their turn, for that enemy had no seamen, no navy, and few mechanics; but they were then swept from the list, rotten and broken down before their time. At this day nearly every ship that can carry the United States flag was built before the war or long after it.