Boadicea-class cruiser

Boadicea at anchor
Class overview
Operators Royal Navy
Preceded bySentinel class
Succeeded byBlonde class
Built1907–1910
In commission1909–1926
Completed2
Scrapped2
General characteristics (as built)
TypeScout cruiser
Displacement3,350 long tons (3,400 t) (normal)
Length405 ft (123.4 m) (o/a)
Beam41 ft 6 in (12.6 m)
Draught14 ft (4.3 m)
Installed power
Propulsion
Speed25 knots (46 km/h; 29 mph)
Range4,260 nautical miles (7,890 km; 4,900 mi) at 10 knots (19 km/h; 12 mph)
Complement317
Armament
Armour

The Boadicea-class cruiser was a pair of scout cruisers built for the Royal Navy in the first decade of the 20th century. They were the first class of this type to be fitted with steam turbine machinery. Upon completion in 1909–10, the sister ships served as flotilla leaders for destroyer flotillas of the First Fleet until 1913 when they were assigned to battleship squadrons. When the First World War began in August 1914, they remained with their squadrons as the First Fleet was incorporated into the Grand Fleet, although they changed squadrons over the course of the war. Both ships were present during the Battle of Jutland in mid-1916, but neither fired a shot. They were converted into minelayers the following year and both ships laid minefields in early 1918 in addition to other missions. The sisters were reduced to reserve in 1919 and sold for scrap in 1921 and 1926.

Design

Like the earlier scout cruisers, the Boadicea class was designed to provide destroyer flotillas with a command ship, theoretically offering the ability to scout ahead of the group and locate targets for the smaller ships to attack. They were enlarged and more powerfully armed versions of the earlier ships, fitted with steam turbines. Curiously, they were no faster than the older ships and equally unsuccessful in their intended role as they lacked the speed of the destroyers they were supposed to escort.[1]

Displacing 3,350 long tons (3,400 t), the ships had an overall length of 405 feet (123.4 m), a beam of 41 feet 6 inches (12.6 m) and a deep draught of 14 feet (4.3 m). They were powered by two sets of Parsons steam turbines, each driving two shafts. The turbines produced a total of 18,000 indicated horsepower (13,000 kW), using steam produced by 12 Yarrow boilers that burned both fuel oil and coal, and gave a maximum speed of 25 knots (46 km/h; 29 mph). They carried a maximum of 780 long tons (790 t) of coal and 189 long tons (192 t) of fuel oil that gave them a range of 4,260 nautical miles (7,890 km; 4,900 mi) at 10 knots (19 km/h; 12 mph).[2] Her crew consisted of 317 officers and enlisted men.[3]

The main armament of the Boadicea class consisted of six breech-loading (BL) four-inch (102 mm) Mk VII guns. The forward pair of guns were mounted side by side on a platform on the forecastle, the middle pair were amidships, one on each broadside, and the two remaining guns were on the centreline of the quarterdeck, one ahead of the other.[3] The guns fired their 31-pound (14 kg) shells to a range of about 11,400 yards (10,400 m).[4] Her secondary armament was four quick-firing (QF) three-pounder 47 mm (1.9 in) Vickers Mk I guns and two submerged 21-inch (533 mm) torpedo tubes. During the war, four additional four-inch guns were added amidships to increase her firepower. A QF three-inch 20 cwt[Note 1] anti-aircraft gun was also added. In 1918 it was replaced by a four-inch gun.[3]

As scout cruisers, the ships were only lightly protected to maximise their speed. They had a curved protective deck that was 1 inch (25 mm) thick on the slope and 0.5 inches (13 mm) on the flat.[2] Their conning tower was protected by 4 inches of armour.[3]

Ships

Construction data
Ship Builder[5] Laid down[3] Launched[3] Completed[3]
HMS Boadicea Pembroke Dockyard 1 June 1907 14 May 1908 June 1909
HMS Bellona 5 June 1908 23 March 1909 February 1910

Service

Both Boadicea and Bellona began their careers with destroyer flotillas of the First Fleet, Boadicea as senior officers' ship for the 1st Destroyer Flotilla and Bellona with the 2nd Destroyer Flotilla. The former was transferred to the 3rd Destroyer Flotilla in mid-1912 and the sisters were transferred to the 2nd and the 1st Battle Squadrons, respectively, of the First Fleet in 1913.[6] Both ships were assigned to positions at the rear of their squadrons and did not fire their guns during the Battle of Jutland on 31 May – 1 June 1916.[7]

The sisters remained with their squadrons until 1917 when they were converted into minelayers, Bellona in May[8] and Boadicea in October, Bellona replacing her sister in the 2nd Battle Squadron that month.[9] After her conversion, Boadicea was assigned to the 4th Battle Squadron in January 1918[10] and neither ship was reassigned before the end of the war.[11] They laid mines at the entrance to the Kattegat on the nights of 18/19 and 24/25 February 1918[12] and both made several other sorties to lay their mines before the end of the war.[3] They were placed in reserve after the war[13] and taken out of service in 1920.[14] Bellona was quickly sold for scrap in 1921, but Boadicea was not sold until 1926.[15]

Notes

  1. ^ "Cwt" is the abbreviation for hundredweight, 20 cwt referring to the weight of the gun.

Footnotes

  1. ^ Friedman 2009, pp. 111–13
  2. ^ a b Friedman 2009, p. 295
  3. ^ a b c d e f g h Preston 1985, p. 50
  4. ^ Friedman 2011, pp. 75–76
  5. ^ Phillips 2014, p. 288
  6. ^ "The Navy List". National Library of Scotland. London: His Majesty's Stationery Office. 18 June 1913. p. 269. Retrieved 31 March 2016.
  7. ^ Corbett 1997, p. 345
  8. ^ "Supplement to the Monthly Navy List Showing the Organisation of the Fleet, Flag Officer's Commands, &c". National Library of Scotland. Admiralty. May 1917. p. 14. Retrieved 1 April 2016.
  9. ^ "Supplement to the Monthly Navy List Showing the Organisation of the Fleet, Flag Officer's Commands, &c". National Library of Scotland. Admiralty. October 1917. pp. 10, 14. Retrieved 1 April 2016.
  10. ^ "Supplement to the Monthly Navy List Showing the Organisation of the Fleet, Flag Officer's Commands, &c". National Library of Scotland. Admiralty. January 1918. p. 10. Retrieved 1 April 2016.
  11. ^ "Supplement to the Monthly Navy List Showing the Organisation of the Fleet, Flag Officer's Commands, &c". National Library of Scotland. Admiralty. October 1918. p. 10. Retrieved 1 April 2016.
  12. ^ Smith 2005, pp. 32–37
  13. ^ "Supplement to the Monthly Navy List Showing the Organisation of the Fleet, Flag Officer's Commands, &c". National Library of Scotland. Admiralty. 1 March 1919. p. 17. Retrieved 1 April 2016.
  14. ^ "The Navy List". National Library of Scotland. London: His Majesty's Stationery Office. 18 March 1920. p. 735. Retrieved 31 March 2016.
  15. ^ Colledge 2006, pp. 37, 43

Bibliography

  • Colledge, J. J.; Warlow, Ben (2006) [1969]. Ships of the Royal Navy: The Complete Record of all Fighting Ships of the Royal Navy (Rev. ed.). London: Chatham Publishing. ISBN 978-1-86176-281-8.
  • Corbett, Julian (1997). Naval Operations to the Battle of the Falklands. History of the Great War: Based on Official Documents. Vol. I (2nd, reprint of the 1938 ed.). London and Nashville, Tennessee: Imperial War Museum and Battery Press. ISBN 0-89839-256-X.
  • Friedman, Norman (2009). British Destroyers From Earliest Days to the Second World War. Annapolis, Maryland: Naval Institute Press. ISBN 978-1-59114-081-8.
  • Friedman, Norman (2011). Naval Weapons of World War One. Barnsley, South Yorkshire, UK: Seaforth. ISBN 978-1-84832-100-7.
  • Phillips, Lawrie; Lieutenant Commander (2014). Pembroke Dockyard and the Old Navy: A Bicentennial History. Stroud, Gloucestershire, UK: The History Press. ISBN 978-0-7509-5214-9.{{cite book}}: CS1 maint: multiple names: authors list (link)
  • Preston, Antony (1985). "Great Britain and Empire Forces". In Gardiner, Robert & Gray, Randal (eds.). Conway's All the World's Fighting Ships 1906–1921. Annapolis, Maryland: Naval Institute Press. pp. 1–104. ISBN 0-85177-245-5.
  • Smith, Peter C. (2005). Into the Minefields: British Destroyer Minelaying 1916 - 1960. Barnsley, UK: Pen & Sword Maritime. ISBN 1-84415-271-5.
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