HMS Sapphire (1904)
_IWM_Q_038114.jpg)
Sapphire's sister ship, Amethyst at anchor
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| History | |
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 United Kingdom
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| Name: | HMS Sapphire |
| Namesake: | Sapphire |
| Builder: | Palmers, Jarrow |
| Laid down: | January 1903 |
| Launched: | 17 March 1904 |
| Completed: | February 1905 |
| Fate: | Sold for scrap, 1921 |
| General characteristics | |
| Class and type: | Topaze-class protected cruiser |
| Displacement: | 3,000 long tons (3,000 t) |
| Length: | 360 ft (109.7 m) (p/p) |
| Beam: | 40 ft (12.2 m) |
| Draught: | 16 ft (4.9 m) |
| Installed power: |
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| Propulsion: | 2 Shafts, 2 triple-expansion steam engines |
| Speed: | 21 knots (39 km/h; 24 mph) |
| Range: | 7,000 nautical miles (13,000 km; 8,100 mi) at 10 knots (19 km/h; 12 mph) |
| Complement: | 318 |
| Armament: | |
| Armour: |
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HMS Sapphire was a Topaze-class protected cruiser built for the Royal Navy in the first decade of the 20th century. She saw active service in World War I and was sold for scrap in 1921.
Rated as third-class cruisers, the Topaze-class ships had a length between perpendiculars of 360 feet (109.7 m), a beam of 40 feet (12.2 m) and a draught of 16 feet (4.9 m). They displaced 3,000 long tons (3,000 t) and their crew consisted of 313 officers and other ranks.
Sapphire was fitted with a pair of four-cylinder vertical triple-expansion steam engines, each driving one shaft, using steam provided by 10 water-tube boilers. The engines were designed to produce a total of 9,800 indicated horsepower (7,300 kW) which was intended to give a maximum speed of 21.75 knots (40.28 km/h; 25.03 mph). They carried a maximum of 700 long tons (710 t) of coal which gave them a range of 7,000 nautical miles (13,000 km; 8,100 mi) at 10 knots (19 km/h; 12 mph) and 2,000 nautical miles (3,700 km; 2,300 mi) at 20 knots (37 km/h; 23 mph).
The main armament of the Topaze class consisted of a dozen quick-firing (QF) 4-inch (102 mm) guns. One gun each was mounted on the forecastle and the quarterdeck. The remaining ten guns were placed port and starboard amidships. They also carried eight QF 3-pounder Hotchkiss guns and two above water 18-inch (450 mm) torpedo tubes. The ships' protective deck armour ranged in thickness from .75 to 2 inches (19 to 51 mm). The main guns were fitted with 1-inch (25 mm) gun shields and the conning tower had armour 3 inches (76 mm) thick.
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