06/18/2026
Rivers of Iron and Courage Spotlight: CSS Tennessee
The CSS Tennessee was one of the Confederacy’s most powerful ironclad warships and became a symbol of both Southern determination and desperation during the final years of the Civil War. Built as a casemate ironclad ram for the Confederate Navy, the vessel was heavily armored and designed to challenge Union naval dominance along the Gulf Coast. Upon her commissioning, she became the flagship of Admiral Franklin Buchanan, commander of the Confederate Mobile Squadron and one of the South’s most experienced naval officers.
The Tennessee entered history during one of the war’s most dramatic naval engagements—the Battle of Mobile Bay on August 5, 1864. On that morning, Admiral Buchanan led his small squadron into battle against the massive Federal fleet commanded by Admiral David G. Farragut. The Confederate force was badly outmatched. Alongside the Tennessee were only three smaller wooden gunboats—the CSS Gaines, CSS Morgan, and CSS Selma. Facing them was Farragut’s powerful fleet of fourteen wooden steamships supported by four ironclad monitors.
Despite the odds, Buchanan chose to fight.
As the battle began, the Tennessee steamed forward into the smoke-filled waters of Mobile Bay. Though heavily armored, she was also slow and difficult to maneuver. Her greatest weapon was supposed to be her ability to ram enemy ships, but the faster Union vessels easily avoided her attempts. Unable to close for a decisive strike, the Tennessee instead exchanged heavy gunfire with the Federal fleet at close range.
Around her, the Confederate gunboats were quickly destroyed, captured, or scattered. Farragut’s fleet succeeded in passing Fort Morgan and entered the bay, where the Union ships temporarily anchored. At that moment, Buchanan still had the opportunity to remain under the protection of the Confederate forts guarding the harbor. Instead, true to his aggressive nature, he ordered the Tennessee directly toward the much larger Federal fleet.
The decision turned the ironclad into the sole target of nearly every Union warship in the bay.
Federal vessels repeatedly rammed the Confederate ironclad in an effort to disable her. Heavy cannon fire pounded the ship from every direction. Although the Tennessee’s armor withstood much of the punishment, her weaknesses soon became apparent. Most critical were the exposed steering chains located in trenches along the after deck. Union gunfire destroyed the steering system, leaving the massive ironclad unable to maneuver or effectively respond to the attack.
Trapped and nearly helpless, the Tennessee endured relentless punishment from Union guns firing heavy solid shot at close range. Inside the ironclad, conditions became increasingly chaotic as splinters, smoke, heat, and flying metal filled the cramped casemate. Admiral Buchanan himself was severely wounded during the fighting when a shot shattered his leg. By the end of the engagement, two crewmen had been killed and several others, including Buchanan, were wounded.
Unable to steer, unable to escape, and suffering mounting damage, the CSS Tennessee could no longer continue the fight. Buchanan reluctantly ordered the colors struck, surrendering the ironclad to the Union Navy.
The capture of the Tennessee effectively sealed Union victory at Mobile Bay, one of the Confederacy’s last major Gulf Coast ports. Following her capture, the ironclad was repaired and taken into Union service, where she later participated in operations against Fort Morgan during the final reduction of Confederate defenses in the bay.
After the Civil War ended, the once-feared ironclad was decommissioned. In 1867, the CSS Tennessee—a ship that had fought against overwhelming odds in one of the war’s most famous naval battles—was sold for scrap, bringing an end to the career of one of the Confederacy’s last great ironclads.
