150 Years Ago Today:

At Hampton roads, Captain Worden of the
Monitor was informed that his primary task was to protect
Minnesota, so the
Monitor took up a position next to the grounded frigate. The officers then took a leisurely breakfast on top of the turret.
On the Confederate side, with Flag Officer Buchanan wounded, Exec Lieutenant Catesby ap Roger Jones took command of the CSS
Virginia. He was equally determined to destroy the
Minnesota. This time only three ships of the James River Squadron followed the
Virginia. It mattered only a little, for the day would belong to
Virginia and
Monitor alone. It was a clear and fairly calm day, so both sides were able to see each other well before they reached gun range. (Giving
Monitor's men time to end breakfast and go to battle stations.) Not surprisingly, Jones initially believed the
Monitor to be a repair raft alongside
Minnesota, but the first salvo of Monitor's 11-inch guns told him he had a formidable opponent.
As the duel got underway, it became clear both ships were handicapped by decisions made on shore. The
Virginia only had explosive shells in her magazines, since there had been no word of having to face an ironclad. With solid shot, there is a chance her two biggest rifled guns could have penetrated the
Monitor's armor. On the Union side, it had been dictated that Monitor's guns be loaded with no more than 15 pounds of powder, a half-charge. The big 11-inch Dahlgren-type cannons were still fairly new, and turreted guns had never been used. This meant that neither ship could punch through the other's armor, though the sheer impact of the shot from
Monitor's guns cracked some of the supporting beams on board
Virginia.

After two hours of hammer and tongs battle, the
Virginia made an error and ran aground in the shallow waters. The
Monitor realized this, and manuevered to a position where only the weaker guns of the Confederate vessel would bear, and proceeded to pound away. Knowing that repeated blows in the same area would eventually break through their armor, Jones called for desperate measures. The safety valves on the boilers were tied down, and turpentine was thrown into the fires to get all possible steam through the engines. The needles on the pressure gages climbed past the danger mark, but the extra speed to the propellers pulled the
Virginia free.
Now, Captain Jones tried to ram the smaller Union vessel, even though
Virginia's bow ram had not been replaced. The result did rather more damage to the ramming vessel, opening up a considerable leak in the bow. A little later on, Captain Worden attempted to return the favor. Again, more damage was done to the ramming ship. A shell from
Virginia struck the pilot house of
Monitor and exploded, temporarily blinding Worden.
Monitor drew off to get her commander to sickbay. The executive officer, Lieutenant Samuel Greene, took over and Monitor headed back towards her opponent. But in that time,
Virginia's crew concluded that they had driven
Monitor away. Although
Minnesota was still aground, the falling tide meant that she was out of reach. Furthermore,
Virginia had suffered enough damage to require extensive repair. Believing the victory was theirs, the Confederates set course back to Norfolk.
When
Monitor returned, she discovered the foe apparently running away. Greene sent a few parting shots towards the Confederate vessel, but considered that his orders required him to stay by the
Minnesota, and so did not pursue. Thus each ship could argue that it had forced the other to retreat.
Newspapers on both sides claimed the victory. The Union papers always referred to the Southern ship as the
Merrimac, her name before she had been captured and extensively reconstructed, and the phrase "Monitor and Merrimac" became the popular name for the encounter. There would be no rematch, however, and neither ship would survive the year.
The debate over who won the encounter continues to this day.