That same day, all arrangements of the fleet being completed, the orders to be ready to attack the following night were issued. Every preparation that had occurred to the minds of the officers as tending to increase the chance of passing uninjured had been made. The chain cables of the sheet anchors had been secured up and down the sides of the vessels, abreast the engines, to resist the impact of projectiles. This was general throughout the squadron, though the Mississippi, on account of her side-wheels, had to place them inside instead of out; and each commander further protected those vital parts from shots coming in forward or aft, with hammocks, bags of coal, or sand, or ashes, or whatever else came to hand. The outside paint was daubed over with the yellow Mississippi mud, as being less easily seen at night; while, on the other hand, the gun-carriages and decks were whitewashed, throwing into plainer view the dark color of their equipment lying around. On some ships splinter nettings were rigged inside the bulwarks, and found of advantage in stopping the flight of larger fragments struck out by shot. Three more of the gunboats, following the example of the Pinola and Itasca, had their lower masts removed and moored to the shore. Of the four that kept them in three had their masts wounded in the fight, proving the advantage of this precaution. Thus prepared, and stripped of every spare spar, rope, and boat, in the lightest fighting trim, the ships stood ready for the night's work.

The flag-officer had at first intended to advance to the attack in two columns abreast, each engaging the fort on its own side and that only. On second thought, considering that in the darkness and smoke vessels in parallel columns would be more likely to foul the hulks on either side, or else each other, and that the fleet might so be thrown into confusion, he changed his plan and directed that the starboard column should advance first, its rear vessel to be followed by the leader of the port column; thus bringing the whole fleet into single line ahead. To help this formation, after dark on the 23d, the eight vessels of the starboard column moved over from the west bank and anchored in line ahead on the other side, the Cayuga, bearing the divisional flag of Captain Theodorus Bailey, in advance. Their orders remained to engage St. Philip on the right hand, and not to use their port batteries. The signal to weigh was to be two vertical red lights.

Meanwhile, during the days that had gone by since breaking the line of hulks, some officers of the fleet had thought they could see the water rippling over a chain between the two groups; and, although the flag-officer himself could not make it out, the success of the attack so depended upon having a clear thoroughfare, that he decided to have a second examination. Lieutenant Caldwell asked to do this in person, as his work was in question. Toward nightfall of the 23d, the Hartford sent a fast twelve-oared boat to the Itasca. Caldwell and Acting-Master Edmund Jones went in the boat, which was manned from the Itasca's crew, and after holding on by the leading mortar-schooner till dark, the party started ahead. Fearing that pickets and sharpshooters on either shore might stop them, they had to pull up in the middle of the river against the heavy current, without availing themselves of the inshore eddy. Before they came up with the chain, a fire was kindled on the eastern bank throwing a broad belt of light athwart the stream. To pull across this in plain view seemed madness, so the boat was headed to the opposite side and crawled up to within a hundred yards of the hulks. Then holding on to the bushes, out of the glare of the fire, and hearing the voices of the enemy in the water battery, the party surveyed the situation. Though tangled chains hung from the bows of the outer and lower hulk it seemed perfectly plain that none reached across the river, but, after some hesitation about running the risk merely to clear up a point as to which he had himself no doubt, the necessity of satisfying others determined Caldwell; and by his orders the cutter struck boldly out and into the light. Crossing it unobserved, or else taken for a Confederate boat by any who may have seen, the party reached the outer hulk on the west side. Pausing for a moment under its shelter they then pulled up stream, abreast the inshore hulk, and Jones dropped from the bow a deep-sea lead with ten fathoms of line. The boat was then allowed to drift with the current, and the line held in the hand gave no sign of fouling anything. Then they pulled up a second time and again dropped down close to the hulk on the east shore with like favorable result; showing conclusively that, to a depth of sixty feet, nothing existed to bar the passage of the fleet. The cutter then flew on her return with a favoring current, signalling all clear at 11 P.M.

At 2 A.M. the flag-ship hoisted the appointed signal and the starboard column weighed, the heavy vessels taking a long while to purchase their anchors, owing to the force of the current. At 3.30 the Cayuga, leading, passed through the booms, the enemy waiting for the ships to come fairly into his power. In regular order followed the Pensacola, Mississippi, Oneida, Varuna, Katahdin, Kineo, Wissahickon, the Confederate fire beginning as the Pensacola passed through the breach. The Varuna, Cayuga, and Katahdin steamed rapidly on, the one heavy gun of the gunboats being ill-adapted to cope with those in the works; but the heavy ships, keeping line inside the gunboats, moved slowly by, fighting deliberately and stopping from time to time to deliver their broadsides with greater effect.

BATTLE OF NEW ORLEANS.[ToList]

The Pensacola, following the Cayuga closely and keeping a little on her starboard quarter, stopped when near Fort St. Philip, pouring in her heavy broadside, before which the gunners of its barbette battery could not stand but fled to cover; then as the big ship moved slowly on, the enemy returned to their guns and again opened fire. The Pensacola again stopped, and again drove the cannoneers from their pieces, the crew of the ship and the gunners in the fort cursing each other back and forth in the close encounter. As the ship drew away and turned toward the mid-river, so that her guns no longer bore, the enemy manned theirs again and riddled her with a quartering fire as she moved off. At about this time the ram Manassas charged her, but, by a skilful movement of the helm, Lieutenant Roe, who was conning the Pensacola, avoided the thrust. The ram received the ship's starboard broadside and then continued down, running the gauntlet of the Union fleet, whose shot penetrated her sides as though they were pasteboard.

The Mississippi, following the Pensacola and disdaining to pass behind her guns, was reduced to a very low rate of speed. As she came up with and engaged Fort St. Philip, the Manassas charged at her, striking on the port side a little forward of the mizzen-mast, at the same time firing her one gun. The effect on the ship at the time was to list her about one degree and cause a jar like that of taking the ground, but the blow, glancing, only gave a wound seven feet long and four inches deep, cutting off the heads of fifty copper bolts as clean as though done in a machine. Soon after, moving slowly along the face of the fort, the current of the river caught the Mississippi on her starboard bow and carried her over to the Fort Jackson side.

The Oneida, having shifted her port guns to the starboard side, followed the Mississippi. She shared in the delay caused by the Pensacola's deliberate passage until the Mississippi's sheer gave her the chance to move ahead. She then steamed quickly up, hugging the east bank, where the eddy current favored her advance. As she passed close under the muzzles of St. Philip's guns she fired rapidly canister and shrapnel, the fire from the fort passing for the most part harmlessly over the ship and the heads of her crew.