The ironclad's casemate had 14 gun ports, three each in the bow and stern, one firing directly along the ship's centerline, the two others angled at 45° from the center line; these six bow and stern gun ports had exterior iron shutters installed to protect their cannon. There were four gun ports on each broadside; their protective iron shutters remained uninstalled during both days of the Battle of Hampton Roads. "Virginia"s battery consisted of four muzzle-loading single-banded Brooke rifles and six smoothbore Dahlgren guns salvaged from the old "Merrimack". Two of the rifles, the bow and stern pivot guns, were caliber and weighed each. They fired a shell. The other two were cannon of about , one on each broadside. The 9-inch Dahlgrens were mounted three to a side; each weighed approximately and could fire a shell up to a range of (or 1.9 miles) at an elevation of 15°. Both amidship Dahlgrens nearest the boiler furnaces were fitted-out to fire heated shot. On her upper casemate deck were positioned two anti-boarding/personnel 12-pounder Howitzers.