of the
CSS Atlanta The brothers
Asa and
Nelson Tift received the contract to convert the blockade runner into an ironclad in early 1862 with the name of
Atlanta, after the city in Georgia. This was largely financed by contributions from the women of Savannah. After the conversion,
Atlanta was
long overall and had a beam of . Her depth of hold was now The armor of the casemate was angled at 30° from the horizontal and made from two layers of
railroad rails, rolled into plates thick and wide. The outer layer ran vertically and the inner layer horizontally. Her armor was backed by of oak, vertically oriented, and two layers of of pine, alternating in direction. The bottom of the casemate was some from the
waterline and its top was above the waterline. The pyramidal
pilothouse was armored in the same way and had room for two men. The upper portion of
Atlantas hull received of armor. s in the
Washington Navy Yard The rectangular casemate was pierced with eight narrow
gun ports, one each at the bow and stern and three along each side. Each gun port was protected by an armored shutter made of two layers of iron riveted together and allowed the guns to elevate only to a maximum of +5 to +7°.
Atlanta was armed with single-banded,
Brooke rifles on
pivot mounts at the bow and stern. The middle gun port on each side was occupied by a single-banded, Brooke rifle. The 17-
caliber, seven-inch guns weighed about and fired
armor-piercing "bolts" and explosive shells. The equivalent statistics for the 18.5-caliber, 6.4-inch gun were with 80-pound bolts and shells.
Atlanta was also armed with a , solid iron,
ram that was reinforced by a series of vertical steel bars. In front of the ram was a
spar torpedo that carried of
black powder on a wooden pole connected to an iron lever that could be raised or lowered by means of
pulleys. On 31 July 1862, under the command of Lieutenant
Charles H. McBlair,
Atlanta conducted her
sea trials down the Savannah River toward
Fort Pulaski. The ship proved to be difficult to steer, and the additional weight of her armor and guns significantly reduced her speed and increased her draft. This latter was a real problem in the shallow waters near Savannah. She also leaked significantly, and her design virtually eliminated air circulation. The ship was commissioned on 22 November Webb demonstrated his aggressiveness when he attempted to sortie on the first spring tide (30 May) after taking command, but
Atlantas forward engine broke down after he had passed the obstructions, and the ship ran aground. She was not damaged although it took over a day to pull her free. He planned to make another attempt on the next full tide, rejecting Mallory's idea that he wait until the nearly complete ironclad
Savannah was finished before his next sortie. In the meantime,
Rear Admiral Samuel F. Du Pont, commander of the
South Atlantic Blockading Squadron, had ordered the monitors
Weehawken and
Nahant into Wassaw Sound. Commander
John Rodgers in
Weehawken had overall command of the two ships. In the early evening of 15 June, Webb began his next attempt by passing over the lower obstructions in the Wilmington River and spent the rest of the night coaling. He moved forward the next evening to a concealed position within easy reach of the monitors for an attack early the following morning. The
gunboat Isondiga and the
tugboat Resolute A lookout aboard
Weehawken spotted
Atlanta at 04:10 on the morning of 17 June. When the latter ship closed to within about of the two Union ships, she fired one round from her bow gun that passed over
Weehawken and landed near
Nahant. Shortly afterward,
Atlanta ran aground on a sandbar; she was briefly able to free herself, but the pressure of the tide pushed her back onto the sandbar. This time Webb was unable to get off and the monitors closed the range. When
Weehawken, the leading ship, closed to within she opened fire with both of her guns. The shell missed, but the shell struck the ironclad above the port middle gun port, penetrated her armor and broke the wooden backing behind it, spraying splinters and fragments that disabled the entire gun crew and half the crew of the bow gun, even though it failed to cleanly penetrate through the backing. The next shot from the 11-inch
Dahlgren gun struck the upper hull and started a small leak even though it failed to penetrate the two-inch armor there. The next shell from the 15-inch Dahlgren glanced off the middle starboard gun shutter as it was being opened, wounding half the gun's crew with fragments. The final shell was also from the 15-inch Dahlgren and it struck the top of the pilothouse, breaking the armor there and wounding both
pilots in it. By this time,
Atlanta had been able to fire only seven shots, none of which hit either Union ship, and was hard aground with high tide not due for another hour and a half.
Weehawken and
Nahant were able to freely maneuver into positions from which the
Atlantas narrow gun ports would not allow her to reply and the damage already inflicted by the former ship made further resistance futile. Webb surrendered his ship within 15 minutes of opening fire, before
Nahant even had a chance to fire. Of the ironclad's 21 officers and 124 enlisted men, one man was killed and another sixteen were wounded badly enough to require hospitalization. ==In the Union Navy==