The Southern ship was replying with a much more rapid fire from her broadside guns. Hit after hit thundered on the "Monitor's" turret, but its plating held good, though the sensation of being thus pummelled was anything but pleasant to the men inside. At an early stage of the fight a quartermaster was disabled in a startling way. He was leaning against the inside of the turret, when a shot struck it just outside. The momentary yielding of the plating to the blow passed on the shock to the man's body, and he fell stunned and collapsed, and had to be carried below.
Although the speaking-tube from conning-tower to turret was inside the armoured deck, a similar action of a shot, that did not penetrate, smashed it up, and after this orders had to be passed with difficulty by a chain of men. And this was not the only trouble the crew of the "Monitor" had to contend with. But the "Monitor," with all her defects, had the great advantage over the "Merrimac" of a slightly greater speed and of a much greater handiness. Her turning circle was much smaller than that of the larger ship, and she could choose her position, and evade with comparative ease any attempt of her clumsy adversary to ram and run her down. The "Merrimac," with her damaged funnel and diminished draught on her furnaces, found it even more difficult than on the previous day to get up speed. At times she was barely moving. Her depth was also a drawback in the narrow channel. While the light-draught "Monitor" could go anywhere, the "Merrimac," drawing 22 feet of water, was more than once aground, and was got afloat again after many anxious efforts.
The "Monitor" had a good supply of solid shot; the "Merrimac" very few, for she had been sent out, not to fight an armour-clad, but to destroy a wooden fleet. Finding that his shell-fire was making no impression on the "Monitor's" turret, and recognizing the difficulty of ramming his enemy, Commander Jones made up his mind to disregard the "Monitor" for a while, and attempt to complete the destruction of the "Minnesota." He therefore ordered his pilot to steer across the Roads, and take up a position near the stranded frigate. The pilot afterwards confessed that he was more anxious about facing the rapid fire of the "Minnesota's" numerous guns than standing the more deliberate attack of the "Monitor's" slow fire. He could have brought the "Merrimac" within half a mile of the "Minnesota," but he made a wide detour, and ran aground two miles from the Federal ship. When after great efforts the ironclad was floated again, the pilot declared he could not take her any nearer the "Minnesota" without grounding again, and Commander Jones reluctantly turned to renew the duel with the "Monitor," which had been steaming slowly after him. The "Monitor's" officers thought the "Merrimac" was running away from them, and were surprised when she closed with their ship again.
Once more there was a fight at close quarters. Those who watched the battle could make out very little of what was happening, for the two ships were wrapped in clouds of powder smoke and blacker smoke from their furnaces. The "Merrimac's" funnel was down, and the smoke from her furnace-room was pouring low over her casemate. In the midst of the semi-darkness Jones tried to ram the turret-ship, and nearly succeeded. Worden, using the superior handiness of his little vessel, converted the direct attack into a glancing blow, but the Confederates thought that if they had not lost the iron wedge of their ram the day before in sinking the "Cumberland" they would have sunk the "Monitor."
The turret-ship now kept a more respectful distance. For more than a quarter of an hour she did not fire a shot. The Confederates hoped they had permanently disabled her, but what had happened was that the "Monitor" had ceased fire in order to pass a supply of ammunition up into the turret, which could not be revolved while this was being done. Presently the "Monitor" began firing again. Jones of the "Merrimac" now changed his target. Despairing of seriously damaging the "Monitor's" turret, he concentrated his fire on her conning-tower, and before long this plan had an important result. Dana Greene gives a vivid description of the incident:—
"A shell struck the forward side of the pilot-house directly in the sight-hole or slit, and exploded, cracking the second iron log and partly lifting the top, leaving an opening. Worden was standing immediately behind this spot, and received in his face the force of the blow, which partly stunned him, and filling his eyes with powder, utterly blinded him. The injury was known only to those in the pilot-house and its immediate vicinity. The flood of light rushing through the top of the pilot-house, now partly open, caused Worden, blind as he was, to believe that the pilot-house was seriously injured if not destroyed; he, therefore, gave orders to put the helm to starboard, and 'sheer off.' Thus the 'Monitor' retired temporarily from the action, in order to ascertain the extent of the injuries she had received. At the same time Worden sent for me, and I went forward at once, and found him standing at the foot of the ladder leading to the pilot-house.
"He was a ghastly sight, with his eyes closed and the blood apparently rushing from every pore in the upper part of his face. He told me that he was seriously wounded, and directed me to take command. I assisted in leading him to a sofa in his cabin, where he was tenderly cared for by Dr. Logue, and then I assumed command. Blind and suffering as he was, Worden's fortitude never forsook him; he frequently asked from his bed of pain of the progress of affairs, and when told that the 'Minnesota' was saved, he said, 'Then I can die happy!'"[18]
In the confusion that followed the disablement of her commander, the "Monitor" had drifted away from the "Merrimac," but still in a position between her and the "Minnesota." The Confederate ship fired at the temporarily disabled turret-ship a few shots, to which there was no reply. Commander Jones and his officers believed they had put their opponent out of action. But the "Merrimac" was not in a position to profit by her advantage. It was near 2 p.m. The tide was running out rapidly, and the risk of grounding was serious. Ammunition was beginning to be scarce. The crew was exhausted, and the ship's pumps had to be kept going, for under the strain of the heavy firing, and the repeated groundings during the two days, the hull was leaking badly. Jones judged the time had come to break off the action, and the "Merrimac" turned slowly, and began to steam into the Elizabeth River, on her way back to Norfolk.
The "Monitor," seeing her retiring, fired a few long-range shots after her. They splashed harmlessly into the water. So the famous fight ended.
On board both ships no life had been lost, and only a few men were wounded, Captain Worden's case being the most serious. In fact, there were fewer casualties than on the first day, when the loss of life in the wooden ships had been serious, and the "Merrimac," despite her armour, had had twenty-one men killed and wounded by the lighter projectiles of the "Cumberland" and "Congress" finding their way into her casemate through the port-holes. Neither ship had suffered severe injury, though if the battle had continued, the damage done to the conning-tower of the "Monitor" might have had serious results. When the "Merrimac" was docked at Gosport Yard, Norfolk, to be overhauled and repaired, it was found that she had ninety-seven indentations on her armour. Twenty of these were judged to be the marks of the "Monitor's" 11-inch balls. In these places the outer layer of armour-plating was cracked and badly damaged. The under layer and the wood backing were uninjured. The other seventy-seven marks were mere surface dents made by the lighter artillery of the wooden ships. The "Monitor" had used reduced charges of 15 pounds of gunpowder, and it was believed that if the full charge of 30 pounds had been used, the results might have been more serious, but the Navy Department had ordered the reduced charge, as it was feared that with full charges the strain on the gun-mountings and turret-gear would be too severe. The "Merrimac's" funnel was riddled, and all outside fittings shot away. Two of her guns had been made unserviceable on the first day by shots striking their muzzles.