Eclipse-class sloop
| HMS Sirius | |
| Class overview | |
|---|---|
| Name | Eclipse class | 
| Builders | 
 | 
| Operators | Royal Navy | 
| Preceded by | Amazon class | 
| Succeeded by | Fantome class | 
| Built | 1867–1870 | 
| In service | 1867–1921 | 
| Completed | 7 | 
| Scrapped | 7 | 
| General characteristics (as built) | |
| Type | Wooden screw sloop (later corvette) | 
| Displacement | 1,760 long tons (1,790 t) | 
| Tons burthen | 1,268 bm | 
| Length | 212 ft (64.6 m) (p/p) | 
| Beam | 36 ft (11.0 m) | 
| Draught | 16 ft 6 in (5.0 m) | 
| Depth | 21 ft 6 in (6.6 m) | 
| Installed power | 1,946–2,518 ihp (1,451–1,878 kW) | 
| Propulsion | 
 | 
| Sail plan | Barque or Ship rig | 
| Speed | 12–13 knots (22–24 km/h; 14–15 mph) | 
| Complement | 180 | 
| Armament | 
 | 
The Eclipse class was a class of seven 6-gun wooden screw sloops built for the Royal Navy between 1867 and 1870. They were re-armed and re-classified as 12-gun corvettes in 1876. Two further vessels were proposed but never ordered.