Danish ironclad Rolf Krake
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Rolf Krake
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| History | |
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 Kingdom of Denmark
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| Name: | Rolf Krake |
| Namesake: | Rolf Krake |
| Ordered: | 28 August 1862 |
| Builder: | Robert Napier and Sons, Govan |
| Laid down: | 1862 |
| Launched: | 6 May 1863 |
| Commissioned: | 1 July 1863 |
| Decommissioned: | 29 June 1907 |
| Fate: | Scrapped, 1907 |
| General characteristics | |
| Type: | Turret ironclad |
| Displacement: | 1,360 long tons (1,380 t) |
| Length: | 191 ft 3 in (58.3 m) (o/a) |
| Beam: | 50 ft 10 in (15.5 m) |
| Draft: | 23 ft 3 in (7.1 m) |
| Installed power: | 700 ihp (520 kW) |
| Propulsion: | 1 shaft, 1 steam engine |
| Sail plan: | Schooner-rigged |
| Speed: | 10.5 knots (19.4 km/h; 12.1 mph) |
| Range: | 1,150 nmi (2,130 km; 1,320 mi) at 8 knots (15 km/h; 9.2 mph) |
| Complement: | 140 |
| Armament: | 2 × twin 68-pounder smoothbore guns |
| Armour: |
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Rolf Krake was a Danish monitor built in Scotland during the 1860s. The vessel was designed by Cowper Phipps Coles, a pioneering naval architect, and was the first warship of any navy to carry a turret of the type designed by Coles. She was the first all-iron, steam-powered vessel acquired by Denmark.
Rolf Krake was ordered in 1862 as tensions rose between Prussia and Denmark over the Duchy of Schleswig-Holstein in the early 1860s. The ship had an overall length of 191 feet 3 inches (58.3 m), a beam of 50 feet 10 inches (15.5 m), and a draft (ship) of 23 feet 3 inches (7.1 m). She displaced 1,360 long tons (1,382 t) and her crew consisted of 140 officers and ratings. Hinged were fitted to improve Rolf Krake's seakeeping abilities. She was equipped with a beak-shaped ram at the bow.
The ship had one direct-acting steam engine that drove a single 9-foot (110 in) propeller, using steam provided by two boilers. The engine produced a total of 700 indicated horsepower (520 kW) which gave her a maximum speed of 10.5 knots (19.4 km/h; 12.1 mph) during her sea trials in mid-1863.Rolf Krake carried 135 long tons (137 t) of coal, enough to steam 1,150 nautical miles (2,130 km; 1,320 mi) at 8 knots (15 km/h; 9.2 mph). She was schooner-rigged with three masts.
Rolf Krake was initially armed with four Swedish-built 68-poounder smoothbore guns, one pair in each gun turret. The hand-operated turrets took a crew of 18 men one minute to complete a full revolution.
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