| Emerald at anchor | 
| History | 
|---|
| United Kingdom | 
|---|
| Name | Emerald | 
| Builder | Armstrong Whitworth, Newcastle-on-Tyne | 
| Laid down | 23 September 1918 | 
| Launched | 19 May 1920 | 
| Commissioned | 14 January 1926 | 
| Decommissioned | 9 June 1948 | 
| Out of service | 15 July 1933 | 
| Reclassified | 
In reserve between 1937 and 1939In reserve between 1945 and 1947 | 
| Identification | Pennant number: 66 (Jan 26); I.66 (1936); D.66 (1940) | 
| Fate | Sunk as a target in 1947, scrapped in July 5 1948 | 
| General characteristics | 
|---|
| Class & type | Emerald-class light cruiser | 
| Displacement |  | 
| Length | 570 ft (173.7 m) | 
| Beam | 54.5 ft (16.6 m) | 
| Draught | 16.5 ft (5.0 m) | 
| Installed power | 
Eight boilers80,000 shp (60,000 kW) | 
| Propulsion | 4 shafts; geared steam turbines | 
| Speed | 33 knots (61 km/h; 38 mph) | 
| Range | 
1,350 nautical miles (2,500 km; 1,550 mi) at 32 knots (59 km/h; 37 mph)8,000 nautical miles (15,000 km; 9,200 mi) at 15 knots (28 km/h; 17 mph) | 
| Complement | 572 officers and ratings | 
| Armament | 
Original configuration:7 × single BL 6 in (150 mm) Mk XII guns4 × 3-pounder (47 mm) "pom-pom" guns3 × single 4 in (100 mm) anti-aircraft guns4 × 21 in (533 mm) quadruple torpedo tubes.August 1939:7 × 6 in (152 mm) single guns,2 × quadruple 0.5 in MG guns,4 × 3 pdr (47 mm) pom-pom single guns,4 × 21 inch (533 mm) quadruples torpedo tubes.April 1943:5 × 6 in (152 mm) single guns,2 × 2 pdr (37 mm/40 mm) pom-poms quad guns,4 × 3 pdr (47 mm) pom-pom single guns,6 × 20 mm (0.8 in) dual power-operated guns,4 × 21 in (533 mm) quadruples torpedo tubes.April 1944:5 × 6 in (152 mm) single guns,2 × 2 pdr (37 mm/40 mm) pom-poms quad guns,4 × 3 pdr (47 mm) pom-pom single guns,6 × 20 mm (0.8 in) single guns,6 × 20 mm (0.8 in) dual power-operated guns,4 × 21 in (533 mm) quadruples torpedo tubes. | 
| Armour | 
Original configuration
Side: 3 in (76 mm) (amidships),Side: 2.5–1.5 in (64–38 mm) (bow),Side: 2 in (51 mm) (stern),Deck: 1 in (25 mm) | 
| Aircraft carried | 
One aircraft with one catapultCatapult later removed. A Fairey Seafox was carried in the early days of World War II |