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USS Osage (1863)
USS ''Osage'' was a single-turreted built for the Union Navy during the American Civil War. After completion in mid-1863, the ship patrolled the Mississippi River against Confederate raids and ambushes as part of Rear Admiral David Porter's Mississippi Squadron. ''Osage'' participated in the Red River Campaign in March–May 1864, during which she supported the capture of Fort DeRussy in March and participated in the Battle of Blair's Landing in April. The ship was grounded on a sandbar for six months after the end of the campaign and badly damaged. ''Osage'', after being refloated and repaired, was transferred to the West Gulf Blockading Squadron in early 1865 for the campaign against Mobile, Alabama. During the Battle of Spanish Fort in March 1865 she struck a mine and rapidly sank. The ship was later salvaged and sold in 1867.
==Design and description==
The steam-powered gun turret of the ''Osage'' was at the bow and she had a deckhouse between the funnel and the sternwheel, although another was later added between the turret and the funnel. Her pilothouse was positioned above the rear deckhouse, next to the forward face of the sternwheel. The ship was long overall and had a beam of . When launched she proved to have a draft deeper than planned and she measured 523 tons burthen. ''Osage'' had four steam boilers powering a two-cylinder, western steamboat-type engine that drove the sternwheel.〔Silverstone, p. 149〕 The ship had a maximum speed of in service〔Canney, p. 109〕 and she carried of coal.〔Gibbons, p. 57〕 Her crew numbered 100 officers and enlisted men.〔
''Osage''s main armament consisted of two smoothbore Dahlgren guns mounted in a single turret〔Konstam, p. 42〕 that had an arc of fire of 300°. Firing the guns tended to jam the turret until modifications were made to the guns' recoil system.〔 Each gun weighed approximately . They could fire a shell up to a range of at an elevation of 15°.〔Olmstead, et al., p. 90〕 The turret was protected by of wrought iron while the hull had of armor. The armor plates of the deck and paddle housing were thick.〔
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