| Name | No | Yard No | Builder | Laid down | Launched | Comp | Fate |
| Jaseur | R & H Green, Blackwall | 2.9.1856 | 7.3.1857 | 5.9.1857 | wrecked 26.2.1859 | ||
| Jasper | R & H Green, Blackwall | 26.9.1856 | 18.3.1857 | 5.9.1857 | to China 8.1862 (Amoy) | ||
| Algerine | W & H Pitcher, Northfleet | 1.10.1856 | 24.2.1857 | 9.4.1857 | sold 4.1872 | ||
| Lee | W & H Pitcher, Northfleet | 1.10.1856 | 28.2.1857 | 13.4.1857 | sunk 25.6.1859 | ||
| Leven | W & H Pitcher, Northfleet | 1.10.1856 | 7.3.1857 | 24.4.1857 | sold 7.1873 | ||
| Slaney | W & H Pitcher, Northfleet | 1.10.1856 | 17.3.1857 | 27.4.1857 | wrecked 9.5.1870 |
|
Displacement normal, t |
370 |
|
Displacement full, t |
|
|
Length, m |
38.1 pp |
|
Breadth, m |
7.01 |
|
Draught, m |
2.82 hull depth |
|
No of shafts |
1 |
|
Machinery |
sails + boilers, 1 1-cyl HSE direct-acting |
|
Power, h. p. |
294 |
|
Max speed, kts |
9 |
|
Fuel, t |
coal |
|
Endurance, nm(kts) |
|
|
Armament |
1 x 1 - 206/14 68pdr 87cwt shell SBML, 2 x 1 - 148/8 24pdr SBML howitzers |
|
Complement |
50 |
Project history: Wooden-hulled, design of 1856. Enlarged Albacore class. Reclassed as gunvessels in June 1859.
Modernizations: None.
Naval service: Jaseur wrecked on the Paxo Nuevo Shoal 26.2.1859, en route from Port Royal to Greytown. Lee sunk in action with the Taku forts, Peiho River, China 25.6.1859. Slaney wrecked in a typhoon in the Paracel Islands near Hong Kong 9.5.1870.
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