| Name | No | Yard No | Builder | Laid down | Launched | Comp | Fate |
| Impétueuse | Arsenal de Cherbourg | 20.1.1854 | 15.8.1856 | 12/1856 | stricken 11.1869 | ||
| Souveraine | Arsenal de Lorient | 15.5.1854 | 3.6.1856 | 1/1857 | hospital ship 6-11/1871, stricken 5.1872 |
|
Displacement normal, t |
3773 |
|
Displacement full, t |
|
|
Length, m |
72.2 pp |
|
Breadth, m |
14.7 |
|
Draught, m |
6.63 mean |
|
No of shafts |
1 hoisting |
|
Machinery |
sails + 1 4-cyl HSE return connecting rod, boilers |
|
Power, h. p. |
2228 |
|
Max speed, kts |
12 |
|
Fuel, t |
coal 520 |
|
Endurance, nm(kts) |
|
|
Armament |
Impétueuse: 6 x 1 - 223/12 No.1 shell SBML, 30 x 1 - 165/17 30pdr No. 1 SBML, 18 x 1 - 165/14 30pdr No.3 SBML, 2 x 1 - 165/14 MLR Souveraine: 8 x 1 - 223/12 No.1 shell SBML, 26 x 1 - 165/17 30pdr No. 1 SBML, 2 x 1 - 165/14 MLR, 20 x 1 - 163/8 30pdr SBML carronades |
|
Complement |
530 |
Project history: 1st rank screw frigates, 1853 design of G. Allix. Wooden hull.
Modernizations: 1857, Impétueuse: - 2 x 1 - 165/14 SBML; + 2 x 1 - 165/14 MLR
Naval service: No significant events.
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