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fighting ships of the world

FRENCH NAVY (FRANCE)

CRUISERS

ALGER protected cruisers (1891-1893)

Isly 1893

Name No Builder Laid down Launched Comp Fate
Alger   Arsenal de Cherbourg 11/1887 23/11/1889 1891 hulk 1911
Isly   Arsenal de Brest 8/1887 23/6/1891 1893 stricken 1914
Jean Bart   Arsenal de Rochefort 9/1887 24/10/1889 1891 wrecked 11/2/1907

 

Displacement normal, t

Alger: 4313

Jean Bart: 4044

Isly: 4406

Displacement full, t

 

Length, m

105.0 pp 107.0 oa

Breadth, m

13.0

Draught, m

6.10 - 6.45 max

No of shafts

2

Machinery

Alger: VTE, 24 Belleville boilers

Jean Bart, Isly: HTE, 8 cylindrical boilers

Power, h. p.

8000

Max speed, kts

Alger: 19

Jean Bart, Isly: 19.5

Fuel, t

coal 860

Endurance, nm(kts)

6000(10)

Armour, mm

Alger: steel; deck: 50 with 100mm slopes, CT: 50

Jean Bart: steel; deck: 50 with 100mm slopes, CT: 75

Isly: steel; deck: 50 with 100mm slopes, shields: 50, CT: 75

Armament

Alger: 4 x 1 - 165/28 M1881, 6 x 1 - 139/30 M1884, 2 x 1 - 65/50 M1891, 8 x 1 - 47/40 M1885, 8 x 5 - 37/20 M1885, 5 - 350 TT (aw, 1 bow, 4 beam)

Jean Bart, Isly: 4 x 1 - 165/28 M1881, 6 x 1 - 139/30 M1884, 2 x 1 - 65/50 M1891, 12 x 1 - 47/40 M1885, 10 x 5 - 37/20 M1885, 5 - 350 TT (aw, 1 bow, 4 beam)

Complement

Alger: 387

Jean Bart, Isly: 405

Ship project history: Two-funnelled cruisers with plough bows, tumblehome and in Alger an overhanging stern. There were originally two large military masts. The 165mm were in fore and aft upper deck sponsons with four 139mm in midships ones, one 139mm under the forecastle and one on the poop. The class were reckoned to be good steamers, and the early use of Belleville boilers in Alger should be noted.

Ship protection: In Isly and later in Jean Ban 139mm guns had 50mm shields. The CT had 50/75mm and the curved armour deck was 50mm total on the flat amidships with 100mm max on the slopes. There was a cofferdam 0.8m wide above the armour deck and an early type of cellular layer.

Modernizations: 1890s, Jean Bart: 139mm guns received 50mm shields.

1900s, all: - 6 x 1 - 139/30; + 6 x 1 - 139/30 M1893, 2 - 350 TT (beam)

1903, Jean Bart: was reboilered with 8 Niclausse boilers (10000hp, 20kts).

Naval service: Jean Bart was wrecked 11/2/1907 off Sahara coast.

Ivan Gogin, 2014