Branlebas-class destroyer

Sape underway
Class overview
Name: Branlebas class
Operators:  French Navy
Preceded by: Claymore class
Succeeded by: Spahi class
Built: 1905–09
In service: 1908–32
Completed: 10
Lost: 2
Scrapped: 8
General characteristics
Type: Destroyer
Displacement: 350 t (344 long tons)
Length: 58 m (190 ft 3 in) (p/p)
Beam: 6.28 m (20 ft 7 in)
Draught: 2.96 m (9 ft 9 in)
Installed power:
Propulsion: 2 shafts; 2 Triple-expansion steam engines
Speed: 27.5 knots (50.9 km/h; 31.6 mph)
Range: 2,100 nmi (3,900 km; 2,400 mi) at 10 knots (19 km/h; 12 mph)
Complement: 60
Armament:
  • 1 × 65 mm (2.6 in) gun
  • 6 × 47 mm (1.9 in) guns
  • 2 × 450 mm (17.7 in) torpedo tubes
Armour: Waterline belt: 20 mm (0.8 in)

The Branlebas class[lower-alpha 1] was a class of ten destroyers built for the French Navy in the first decade of the 20th century. Eight of the ships survived the First World War and were scrapped afterwards.

Construction and design

The Branlebas-class was a development of the previous Claymore-class, and was the final evolution of the 300-tonne type which the French had built since 1899, with their first destroyer class, the Durandal-class. Like all the 300-tonne destroyers, the Branlebas-class had a turtledeck forecastle with a flying deck, raised above the hull, aft.[2]

They were 58 metres (190 ft 3 in) long between perpendiculars, with a beam of 6.28 metres (20 ft 7 in) and a maximum draught of 2.96 metres (9 ft 9 in).[3] Displacement was 350 tonnes (344 long tons).[4] Two coal-fired Normand or Du Temple boilers fed steam at 1,830 kilopascals (265 psi) to two 3-cylinder triple-expansion steam engines, rated at 6,800 indicated horsepower (5,100 kW), and driving two propeller shafts, giving a design speed of 27.5 knots (50.9 km/h; 31.6 mph).[3][4] Speeds reached during sea trials ranged from 27.09 knots (50.17 km/h; 31.17 mph) for Glaive to 29.82 knots (55.23 km/h; 34.32 mph) for Sape. The ships had a range of 2,100 nautical miles (3,900 km; 2,400 mi) at 10 knots (19 km/h; 12 mph).[5]

A 20 millimetres (0.79 in) belt of armour was fitted to protect the ship's boilers and machinery.[6] The class was built with the standard gun armament for the 300-tonne destroyers, with a single 65  mm forward, backed up by six 47 mm guns, while two 450 mm (17.7 in) torpedo tubes were carried, with one amidships and one right aft.[2][3] The ships had a complement of 4 officers and 56 men.[4]

The Branlebas-class were considered good sea-boats, with reliable machinery.[7][8] By the time the class was built, however, they were outclassed by contemporary British and German destroyers, such as the River-class and the German S138-class torpedo boat being larger (and more heavily armed.[1][7] (French destroyer size had been kept small owing to the influence of the Jeune École, which favoured the construction of large numbers of small ships.)[7]

Losses

Ships

Oriflamme
Ship Builder[5] Laid down[5] Launched[5] Operational History
Branlebas[lower-alpha 2] Normand November 1905 8 October 1907 Sunk by mine 30 September 1915[9]
Étendard Dyle et Bacalan, Bordeaux December 1905 20 March 1908 Sank 25 April 1917[9]
Fanfare Normand November 1905 12 December 1907 Stricken 29 September 1925[9]
Fanion Dyle et Bacalan, Bordeaux December 1905 4 May 1908 Stricken 27 May 1925[9]
Gabion Chantiers de Penhoët, Rouen November 1905 21 December 1907 Stricken 14 May 1921[9]
Glaive Rochefort Dockyard May 1905 10 September 1908 Stricken 13 February 1932[9]
Oriflamme De La Brosse et Fouché, Nantes June 1906 4 April 1908 Stricken 27 May 1921[9]
Poignard Rochefort Dockyard May 1905 3 July 1909 Stricken 3 May 1926[9]
Sabretache[lower-alpha 3] De La Brosse et Fouché, Nantes June 1906 5 February 1908 Stricken 10 May 1920[9]
Sape Chantiers de Penhoët, Rouen November 1905 23 September 1908 Stricken 3 May 1926[9]

Notes

  1. ↑ Also known as the Sabretache-class[1]
  2. ↑ Roche gives the name as Branle-bas
  3. ↑ Couhat gives the name as Sabretagne.[6]

Citations

  1. 1 2 The Engineer 21 August 1908, p. 191.
  2. 1 2 Chesneau and Kolesnick 1979, pp. 326–327.
  3. 1 2 3 The Engineer 21 August 1908, p. 192.
  4. 1 2 3 Couhat 1974, p. 92.
  5. 1 2 3 4 Couhat 1974, pp. 92, 94.
  6. 1 2 Couhat 1974, p. 94.
  7. 1 2 3 Chesneau and Kolesnick 1979, p. 323.
  8. ↑ Couhat 1974, pp. 80–81, 92.
  9. 1 2 3 4 5 6 7 8 9 10 Gardiner and Gray 1985, pp. 194–195.

Bibliography

External links

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