| Name | No | Yard No | Builder | Laid down | Launched | Comp | Fate |
| Diadem | Pembroke DYd | 6.1855 | 14.10.1856 | 3.1.1858 | sold 1.1875 | ||
| Doris | Pembroke DYd | 6.1856 | 25.3.1857 | 30.3.1859 | sold 1885 |
|
Displacement normal, t |
3714 |
|
Displacement full, t |
|
|
Length, m |
73.2 pp |
|
Breadth, m |
14.6 |
|
Draught, m |
5.77 hold depth |
|
No of shafts |
1 |
|
Machinery |
Diadem: sails + rectangular boilers, 1 2-cyl HSE Doris: sails + rectangular boilers, 1 2-cyl HSE, trunk |
|
Power, h. p. |
Diadem: 2979ihp Doris: 3087ihp |
|
Max speed, kts |
Diadem: 12 Doris: 12.9 |
|
Fuel, t |
coal |
|
Endurance, nm(kts) |
|
|
Armament |
20 x 1 - 254/11 10'' 85cwt shell SBML, 2 x 1 - 206/15 68pdr 95cwt shell SBML, 10 x 1 - 163/18 32pdr 56cwt SBML |
|
Complement |
475 |
Project history: 32-gun frigates, originally corvettes. Surveyor's Department design, approved in 1855. The first pair of 'Walker Big Frigates'. Originally ordered in 1854 as 'special type (frigate-) corvettes' of 30 guns, although rated 1st class frigates. Orlando ordered in 1855, was originally built to same design. Wooden hull.
Modernizations: None.
Naval service: No significant events.
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