| Names | Économe Surveillant | 
| Builders | Arsenal de Rochefort: Économe, Surveillant | 
| Completed | 1855: Économe, Surveillant | 
| Losses | none | 
| Transfers | none | 
| Discarding | 1868: Surveillant 1873: Économe | 
| Displacement normal, t | 69 | 
| Displacement full, t | |
| Length, m | 24.0 wl | 
| Breadth, m | 4.10 | 
| Draught, m | 1.20 | 
| No of shafts | side wheels | 
| Machinery | sails + 1 SE, boiler | 
| Power, h. p. | 25nhp | 
| Max speed, kts | 7 | 
| Fuel, t | coal 15 | 
| Endurance, nm(kts) | 
 | 
| Armament | 4 x 1 SBML espingoles | 
| Complement | 25 | 
Project history: 25nhp paddle 2nd class avisos. Wooden hulls.
Modernizations: None.
Naval service: No significant events.
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