Union Iron Works
Carondelet MO
The legendary James B. Eads bought the Carondelet Marine Railway Company in 1861 and used it to build seven gunboats and seven monitors for the US Navy, as well as for conversion and repair work. The yard was located at the foot of Davis Street in St. Louis, on the site later used by St. Louis Ship.
| O/N | Name | Customer | Type | LDT | LOA | Delivered | Notes | |
| Built in Mound City IL | ||||||||
| Cairo | US Navy | gunboat | 512 | 25 Jan 1862 | sunk by a mine in the Yazoo River 12-Dec-62 | |||
| Cincinnati | US Navy | gunboat | 512 | 16 Jan 1862 | sold 1866 | |||
| Mound City | US Navy | gunboat | 512 | 16 Jan 1862 | sold for scrap 1865 | |||
| Built in Carondelet MO | ||||||||
| Carondelet | US Navy | gunboat | 512 | 15 Jan 1862 | sold 1865, wrecked and sank in the Ohio River 1873 | |||
| Louisville | US Navy | gunboat | 512 | 16 Jan 1862 | sold 1865 | |||
| Pittsburgh | US Navy | gunboat | 512 | 25 Jan 1862 | sold for scrap 1865 | |||
| St. Louis | US Navy | gunboat | 512 | 31 Jan 1862 | later Baron De Kalb 8-Sep-82, sunk by a mine off Yazoo City 13-Jul-63 | |||
| Neosho | US Navy | monitor | 523 | 13 May 1863 | later Vixen 1869, Osceola 1869, sold 1873 | |||
| Osage | US Navy | monitor | 523 | 10 Jul 1863 | sunk by a mine in the Blakely River 29-Mar-65 | |||
| Oswego | US Navy | monitor | 523 | 10 Jul 1863 | sunk by a mine in the Blakely River 29-Mar-65 | |||
| Chickasaw | US Navy | monitor | 970 | 14 May 1864 | later Samson 1869, Chickasaw 1869, sold 1874, Goldsboro 1882, sank 1950s | |||
| Winnebago | US Navy | monitor | 1,300 | 27 Apr 1864 | later Tornado 1869, Winnebago 1869, sold 1874, Peru's Manco Capac | |||
| Kickapoo | US Navy | monitor | 1,300 | 8 Jul 1864 | later Cyclops 1869, Kewaydin 1869, sold 1874 | |||
| Milwaukee | US Navy | monitor | 1,300 | 27 Aug 1864 | sunk by a mine in the Blakely River 29-Mar-65 | |||