The Pinola, which had taken her place next to the Iroquois, was not so fortunate. She engaged first Fort Jackson, from whose fire she received little injury. Then she passed over to the other side within one hundred and fifty yards of St. Philip, from which she at first escaped with equal impunity; but coming then within the light of the fire-rafts, and the greater part of the squadron having passed, the enemy were able to play upon her with little to mar their aim. She was struck fourteen times, and lost three killed and eight wounded, the heaviest list of casualties among the gunboats.
The Iroquois, which was on picket duty, fell into her station behind the Sciota as the fleet went by. After passing through the obstructions, and when already some distance up the stream, as the current round the bend was throwing her bow off and setting her over on the east bank, the order "starboard" was given to the wheel. As too often happens, this was understood as "stop her," and the engines were stopped while the wheel was not moved. In consequence of this mistake the Iroquois, then a very fast ship, shot over to the east (at this point more precisely the north) bank, past the guns of St. Philip, and brought up against the ironclad steamer Louisiana that was lying against the levee a short distance above the fort. This powerful, though immovable, vessel at once opened her ports and gave the Iroquois every gun that would bear, and at the same time a number of her people ran on deck as though to repel what seemed to be an attempt to board. This gave the Iroquois an opportunity of returning the murderous fire she had received, which she did with effect. Some of the guns of the Louisiana had been double-shotted, the second shot being in two cases found sticking in the hole made by the first. This unfortunate collision made the loss of the Iroquois amount to 8 killed and 24 wounded, in proportion to her complement the heaviest of the whole fleet. It was as she slowly drew away that Commander Porter noted her as "lingering," standing out in full relief against the light of the burning rafts; then she went her way, the last to pass, and the fight was won.
The three gunboats at the rear of the second column failed to get by. The Itasca, on coming abreast of Fort Jackson, was pierced by several shot, one of them entering the boiler. The steam issuing in a dense cloud drove every one up from below, and the vessel deprived of her motive power, drifted helplessly down the stream. The Winona following her, fouled the obstructions, and before she could get clear the Itasca backed on board of her. After a half hour's delay she proceeded under a heavy fire, at first from Jackson. Thinking the burning raft, in whose light the Pinola suffered, to be on that side of the river, she tried to pass on the St. Philip side, receiving the fire of the latter fort at less than point-blank range. Shooting over to the other side again, so thick was the smoke that the ship got close to shore, and her head had to be turned down stream to avoid running on it. By this time day had broken, and the Winona, standing out against the morning sky, under the fire of both forts, and with no other vessel to distract their attention, was forced to retire. The Kennebec also fouled the rafts and was unable to get by before the day dawned.