Missouri was long overall, had a beam of and a draft of. Her casemate extended for most of the length of the ship and was long. It partially enclosed her diameter center paddle wheel in a recess at the aft end of the casemate; the upper of the paddle wheel protruded above the casemate and was totally unprotected. The stern wheel was powered by two steam engines taken from the steamboat Grand Era; four boilers provided steam to the engines and were connected to a single funnel. The ship had a maximum speed of. Missouris armor consisted of railroad "T-rails", laid alternately with the crowns up and down. They were spiked to the backing of of yellow pine, but not closely together enough to give them a solid surface. On the sides of the ship, they were laid diagonally, but were vertical on the bow and stern faces of the casemate. The armor extended approximately below the waterline. The casemate was sloped at an angle of 30°. The deckfore and aft of the casemate was also protected by "T-rails". At the forward end of the casemate was a pilothouse that was raised above the deck. She was built of green timber, caulked with cotton and leaked like a sieve. Despite her three rudders, her stern wheel made her difficult to steer. The casemate had eight gun ports, two in the bow face and three on each side, although only three guns were mounted in the ship. A smoothboreDahlgrenpivot gun was mounted in the starboard forward position. It could fire out of the starboard bow port or the forward starboard broadside port. It weighed approximately and could fire a shell up to a range of at an elevation of 15°. An old 32-pounder siege gun was in the equivalent position on the port side of the ship. The characteristics of this gun cannot be reliably determined because the United States produced a multitude of 32-pounder guns before the Civil War, but none of them were designated as siege guns. The third gun was a smoothbore Dahlgren pivot gun that could fire out of either of the two aft broadside gun ports. It weighed approximately and could fire a shell up to a range of at an elevation of 15°.
Construction and service
The Confederate Navy Department authorized the construction of one or more ironclad warships at Shreveport on 3 October 1862 and Lieutenant Jonathan H. Carter signed a contract for two ships on 1 November. The keel of the first ship was laid the following month and she was launched on 14 April 1863. The ship was commissioned on 12 September 1863 with the name of Missouri, after the high water season on the Red River had ended. Lieutenant Commander Charles Fauntleroy was appointed as her captain, although he told Lieutenant Carter that "he hoped the damned boat would sink" and that he "never intended to serve on her if he could help it". The low water prevented Missouri from playing any part in the Red River Campaign of early 1864. In September, Lieutenant Carter commanded an unsuccessful attempt to seize the gunboat using men from the crews of Missouri and CSS Webb. In March 1865, the river began to rise and Missouri was able to leave the Shreveport area for the first time. She reached Alexandria, Louisiana on 8 April and anchored where she could defend the town. Captain Carter surrendered the ship to Union forces on 3 June, the last Confederate ironclad to surrender. After her armor was removed, Missouri was sold at public auction on 29 November.
