| Name: | POWERFUL |
| Launched: | 1854 |
| Completed: | 11/1854 |
| Builder: | TD Marshall, South Shields |
| Yard Number: | |
| Dimensions: | 146grt, 78nrt, 108.0 x 19.0 x 10.4ft |
| Engines: | 70hp |
| Engines by: | |
| Propulsion: | Paddle |
| Construction: | Iron |
| Reg Number: | |
| History: | |
| 13/12/1854 | Dawson & Co, Cork |
| 1855 | Abraham Sutton & Co, Cork |
| 26/03/1855 | The Admiralty; renamed STEADY |
| 21/07/1856 | Unknown owner, Overseas |
| No later history known | |
| Comments: | 1855: Purchased for use in the Crimean War |