HSwMS Mode (1902)

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HMS Mode (1902).jpg
Mode
History
Naval Ensign of Sweden.svgSweden
NameMode
Builder Yarrow, Poplar
Launched22 July 1902
Stricken1928
FateSunk as target, 1936
General characteristics
Displacement394 long tons (400  t)
Length67.08 m (220 ft 1 in)
Beam6.20 m (20 ft 4 in)
Draught2.67 m (8 ft 9 in)
Installed power
Propulsion2 shafts; 2 triple expansion engines
Speed29 knots (54 km/h; 33 mph)
Complement62
Armament

HSwMS Mode [lower-alpha 1] was a torpedo boat destroyer of the Royal Swedish Navy. Mode was built by the British shipbuilder Yarrow, launching in 1902, and was the first destroyer built for Sweden. She was employed on escort duties during the First World War and was sunk as a target in 1936.

Contents

Design

In 1899, the Swedish Navy Board began negotiations with British shipyards, including Yarrow, Thornycroft and Beardmores, for its first destroyer, which was planned to become a template for Swedish production. Shortages of funds prevented an order from being placed in 1900. Still, in August 1901, Sweden accepted an offer from Yarrow to build a single destroyer, with Yarrow quoting a price of £48,000 compared to £52,250 from Thornycroft. A contract to build the destroyer, to be called Mode, was signed on 4 October 1901, specifying a price of £48,300. The destroyer was required to reach a speed of 31 knots (57 km/h; 36 mph) during sea trials, with financial bonuses for exceeding this speed and penalties for failing to reach the required speed, with the Swedes able to reject the ship if it could not reach a speed of 30 knots (56 km/h; 35 mph). [2]

Mode was 67.08 m (220 ft 1 in) long overall with a beam of 6.20 m (20 ft 4 in) and a draught of 2.67 m (8 ft 9 in). Displacement was 394 long tons (400 t) normal, [3] and 453 long tons (460 t) full load. [4] The ship had an arched turtleback [lower-alpha 2] forecastle and four funnels. [2] [3] Four Yarrow boilers (two coal-fired and two with provision for mixed (coal and oil) firing) fed steam at 250 psi (1,700 kPa) to 2 four-cylinder triple expansion steam engines, rated at 6,000 indicated horsepower (4,500  kW ), that drove two shafts. [6] Armament consisted of six 57 mm (2.2 in) QF guns, with two 450 mm (17.7-inch) torpedo tubes mounted aft. [2] [3] The ship had a crew of 62, comprising 4 officers, 13 non-commissioned officers and 45 ratings. [7]

Service

Mode was built by Yarrow at their Poplar, London yard, [8] as yard number 1118, and was launched on 22 July 1902. [9] During sea trials in August 1902, Mode reached a speed of 32.4 knots (60.0 km/h; 37.3 mph), [7] making her briefly the world's fastest ship. [8] For the trials, a specially trained team of engineers and stokers were provided by Yarrow, while fuel was high grade coal and some oil. No armament was fitted, but the ship carried the equivalent weight in ballast. [7] [lower-alpha 3] After acceptance and delivery to Karlskrona, Mode's armament was fitted. [7] When the trials were then repeated by the Swedes, the ship could only reach 29 knots (54 km/h; 33 mph), [7] although this still made her the fastest ship in the Swedish Navy by a considerable margin. [8] The Yarrow hull design proved to be poorly suited to sea conditions in the Baltic Sea, and Mode was very wet forward. [4] [8] Sweden purchased a second destroyer, the Magne, from Thornycroft in 1904, [7] and this proved to have better seakeeping. [8] The design of Magne was chosen as the basis for production in Sweden, with four destroyers (Wale and the Ragnar class) built between 1907 and 1909 based on this design. [11] [12]

In June 1905, Mode was deployed with Magne to the West coast of Sweden during the crisis that preceded the dissolution of the Union between Sweden and Norway. [11] During the First World War, Mode was employed escorting convoys of merchant ships from ports in the Northeast of Sweden to Øresund and the Kattegat. [7] She remained in commission until 1919, [7] was stricken in 1928 and sunk as a target in 1936. [4] [lower-alpha 4]

Notes

  1. ↑ "HSwMS" here stands for " Hans/Hennes Majestäts Skepp " - The prefix "HMS" is used in Sweden - the prefix "HSwMS" is used in international contexts to avoid confusion with ships of the British Royal Navy. [1]
  2. ↑ A fore deck with exaggerated camber designed to throw off sea water at high speeds. [5]
  3. ↑ The shallow waters of the measured mile used, off the Maplin Sands, also contributed to the high speed recorded in the trials. The British Admiralty later discounted trials made on this course because of the effects on the measured speed. [10]
  4. ↑ Harris claims that Mode was sunk as a target in 1928. [7]

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References

  1. ↑ "Ordbok: "H"" (in Swedish). Försvarsmakten. Archived from the original on 12 August 2011.
  2. 1 2 3 Harris 2000 , p. 120
  3. 1 2 3 Chesneau & Kolesnik 1979 , p. 363
  4. 1 2 3 Gardiner & Gray 1985 , p. 357
  5. ↑ Gardiner & Lambert 1992, p. 188
  6. ↑ Harris 2000 , pp. 120–121
  7. 1 2 3 4 5 6 7 8 9 Harris 2000 , p. 121
  8. 1 2 3 4 5 Palmstierna 1972 , p. 59
  9. ↑ "Mode". Shipping and Shipbuilding. Shipping and Shipbuilding Research Trust (SSRT). Retrieved 21 November 2020.
  10. ↑ Harris 2000, pp. 121, 124, note 2
  11. 1 2 Harris 2000 , p. 123
  12. ↑ Gardiner & Gray 1985 , p. 360

Bibliography

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