 Turquoise at anchor
| |
| Class overview | |
|---|---|
| Name | Emerald class |
| Operators |  Royal Navy |
| Preceded by | HMS Rover |
| Succeeded by | Bacchante class |
| Built | 1873–1878 |
| Completed | 6 |
| Scrapped | 6 |
| General characteristics (as built) | |
| Type | Composite screw corvette |
| Displacement | 2,120 long tons (2,150 t) |
| Tons burthen | 1,864 bm |
| Length | 220 ft (67.1 m) (p/p) |
| Beam | 40 ft (12.2 m) |
| Draught | 18 ft (5.5 m) |
| Installed power | 2,031–2,364 ihp (1,515–1,763 kW) |
| Propulsion |
|
| Sail plan | Ship rig |
| Speed | 12–13 knots (22–24 km/h; 14–15 mph) |
| Range | 2,000–2,280 nmi (3,700–4,220 km; 2,300–2,620 mi) at 10 knots (19 km/h; 12 mph) |
| Complement | 230 |
| Armament |
|
The Emerald-class corvettes were a class of six composite screw corvettes built for the Royal Navy in the mid-1870s. The Opal was built by contract under the 1873-74 Programme, and Turquoise, Ruby, Tourmaline and Emerald under the 1874-75 Programme - the first three also by contract, while Emerald was dockyard-built at Pembroke. The final ship (Garnet) was also dockyard-built at Chatham under the 1875-76 Programme.