| Name | No | Yard No | Builder | Laid down | Launched | Comp | Fate |
| Imperieuse | Deptford DYd | 11.1850 | 15.9.1852 | 30.3.1853 | sold 3.1867 | ||
| Euryalus | Chatham DYd | 10.1851 | 5.10.1853 | 5.3.1854 | sold 3.1867 | ||
| Aurora | Pembroke DYd | 5.9.1854 | 22.6.1861 | 11.1863 | BU 12.1881 | ||
| Forte | Deptford DYd | 5.5.1854 | 29.5.1858 | 7.4.1860 | receiving ship 1880 | ||
| Chesapeake | Chatham DYd | 30.5.1854 | 27.9.1855 | 28.8.1857 | sold 1867 |
|
Displacement normal, t |
Imperieuse: 3345 Euryalus: 3356 Aurora: 3498 Forte: 2370 light Chesapeake: 3334 |
|
Displacement full, t |
|
|
Length, m |
64.6 pp Aurora: 69.2 pp |
|
Breadth, m |
15.3 |
|
Draught, m |
Imperieuse: 6.78 Euryalus: 6.99 Aurora: 6.88 Forte: 5.66 Chesapeake: 6.96 |
|
No of shafts |
1 |
|
Machinery |
Imperieuse, Euryalus: sails + boilers, 1 2-cyl HSE, trunk Aurora, Forte, Chesapeake: sails + boilers, 1 2-cyl HSE |
|
Power, h. p. |
Imperieuse: 1296ihp Euryalus: 1162ihp Aurora: 1576ihp Forte: 1539ihp Chesapeake: 1159ihp |
|
Max speed, kts |
Imperieuse: 9.9 Euryalus: 9.5 Aurora: 10.2 Forte: 11.4 Chesapeake: 9.7 |
|
Fuel, t |
coal |
|
Endurance, nm(kts) |
|
|
Armament |
1 x 1 - 206/15 68pdr 95cwt shell SBML, 30 x 1 - 204/13 8'' 65cwt shell SBML, 20 x 1 - 163/18 32pdr 56cwt SBML |
|
Complement |
515 |
Project history: 51-gun frigates. Surveyor's Department design, approved in 1850. Imperieuse originally ordered in 1848 as 60-gun sailing frigate, was reordered in 1850 as a screw ship. Euryalus originally was ordered in 1848 as 50-gun sailing frigate and was reordered as screw ship in 1851. Intended sisters Bacchante, Liffey, Shannon and Topaze were later completed to a modified design, as were later ordered Mersey and Tweed. Wooden hull.
Modernizations: None.
Naval service: No significant events.
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