SMS Yorck
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| History | |
|---|---|
| Name | Yorck |
| Namesake | Ludwig Yorck von Wartenburg |
| Builder | Blohm & Voss, Hamburg |
| Laid down | 25 April 1903 |
| Launched | 14 May 1904 |
| Commissioned | 21 November 1905 |
| Decommissioned | 21 May 1913 |
| Commissioned | 12 August 1914 |
| Fate | Sunk accidentally by German mines, 4 November 1914 |
| General characteristics | |
| Class & type | Roon-class armored cruiser |
| Displacement | |
| Length | 127.80 m (419 ft 3 in) |
| Beam | 20.20 m (66 ft 3 in) |
| Draft | 7.76 m (25.5 ft) |
| Installed power |
|
| Propulsion |
|
| Speed | 20.4 knots (37.8 km/h; 23.5 mph) |
| Range | 5,080 nmi (9,410 km; 5,850 mi) at 12 knots (22 km/h; 14 mph) |
| Crew |
|
| Armament |
|
| Armor | |
SMS Yorck ("His Majesty's Ship Yorck") was the second and final ship of the Roon class of armored cruisers built for the German Kaiserliche Marine (Imperial Navy) as part of a major naval expansion program aimed at strengthening the fleet. Yorck was named for Ludwig Yorck von Wartenburg, a Prussian field marshal. She was laid down in April 1903 at the Blohm & Voss shipyard in Hamburg, launched in May 1904, and commissioned in November 1905. The ship was armed with a main battery of four 21 cm (8.3 in) guns and had a top speed of 20.4 knots (37.8 km/h; 23.5 mph). Like many of the late armored cruisers, Yorck was quickly rendered obsolescent by the advent of the battlecruiser; as a result, her peacetime career was limited.
Yorck spent the first seven years of her career in I Scouting Group, the reconnaissance force for the Heimatflotte (Home Fleet), initially as the group flagship. She made several cruises in the Atlantic Ocean during this period. Yorck was involved in several accidents, including an explosion aboard the ship in 1911 and a collision with a torpedo boat in 1913. In May 1913, she was decommissioned and placed in reserve until the outbreak of World War I in July 1914. She was then mobilized and assigned to III Scouting Group. On 3 November, she formed part of the screen for the High Seas Fleet as it sailed to support a German raid on Yarmouth; on the return of the fleet to Wilhelmshaven, the ships encountered heavy fog and anchored in the Schillig Roads to await better visibility. Believing the fog to have cleared sufficiently, the ship's commander ordered Yorck to get underway in the early hours of 4 November. She entered a German minefield in the haze, struck two mines, and sank with heavy loss of life. The wreck was dismantled progressively between the 1920s and 1980s to reduce the navigational hazard it posed.

The two Roon-class cruisers were ordered in 1902 as part of the fleet expansion program specified by the Second Naval Law of 1900. The two ships were incremental developments of the preceding Prinz Adalbert-class cruisers, the most significant difference being a longer hull; the extra space was used to add a pair of boilers, which increased horsepower by 2,000 indicated horsepower (1,500 kW) and speed by an intended 0.5 knots (0.93 km/h; 0.58 mph).[1] Although the new cruisers were an improvement over earlier vessels, the launch of the British battlecruiser HMS Invincible in 1907 quickly rendered all of the armored cruisers that had been built by the world's navies obsolescent.[2][a]
Yorck was 127.8 m (419 ft) long overall and had a beam of 20.2 m (66 ft 3 in) and a draft of 7.76 m (25 ft 6 in) forward. She displaced 9,533 t (9,382 long tons; 10,508 short tons) as built and 10,266 t (10,104 long tons; 11,316 short tons) fully loaded. The ship had a crew of 35 officers and 598 enlisted men, though this was frequently augmented with an admiral's staff during periods when she served as a flagship.[4]
The ship's sixteen coal-fired water-tube boilers powered the three vertical triple-expansion steam engines that drove the three propeller shafts. Yorck's propulsion system developed a total of 17,272 metric horsepower (12,704 kW) and yielded a maximum speed of 20.4 knots (37.8 km/h; 23.5 mph) on trials, falling short of her intended speed of 22 knots (41 km/h; 25 mph). She carried up to 1,570 t (1,550 long tons; 1,730 short tons) of coal, which enabled a maximum range of up to 5,080 nautical miles (9,410 km; 5,850 mi) at a cruising speed of 12 knots (22 km/h; 14 mph).[4][5]
Yorck was armed with four 21 cm (8.3 in) SK L/40 guns arranged in two twin-gun turrets,[b] one on either end of the superstructure. Her secondary armament consisted of ten 15 cm (5.9 in) SK L/40 guns; four were in single-gun turrets on the upper deck and the remaining six were in casemates in a main-deck battery. For close-range defense against torpedo boats, she carried fourteen 8.8 cm (3.5 in) SK L/35 guns, all in individual mounts in the superstructure or in the hull. She also had four 45 cm (17.7 in) underwater torpedo tubes, one in the bow, one in the stern, and one on each broadside. She carried a total of eleven torpedoes.[4]
The ship was protected with Krupp cemented armor, with the belt armor being 100 mm (3.9 in) thick amidships and tapering to 80 mm (3.1 in) on either end. The main battery turrets had 150 mm (5.9 in) thick faces. Her deck was 40–60 mm (1.6–2.4 in) thick, connected to the lower edge of the belt by 40–50 mm (1.6–2.0 in) thick sloped armor.[4]


