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fighting ships of the world

ROYAL NAVY (UNITED KINGDOM)

CAPITAL SHIPS & MONITORS

INVINCIBLE battlecruisers

Invincible 1909

Inflexible 1919

Name No Builder Laid down Launched Comp Fate
Invincible   Armstrong, Elswick 2/4/1906 13/4/1907 3/1909 sunk 31/5/1916
Indomitable   Fairfield, Govan 1/3/1906 16/3/1907 6/1908 stricken 3/1920
Inflexible   John Brown, Clydebank 5/2/1906 26/6/1907 10/1908 stricken 3/1920

 

 

Displacement normal, t

17373

Displacement full, t

20078

Length, m

172.8

Breadth, m

22.1

Draught, m

8.0

No of shafts

4

Machinery

Parsons steam turbines, 31 Babcock & Wilcox or Yarrow boilers

Power, h. p.

41000

Max speed, kn

25.5

Fuel, t

coal 3085 + oil 710 - 725

Armour, mm

belt: 152 - 102, bulkheads: 178 - 152, turrets: 178 (all sides), 76 (roof), barbettes: 178 (over main deck) - 51 (under main deck), deck: 64 - 19, over magazines: 89, CT: 254 (face and sides) - 178 (rear) - 51 (roof)

Armament

4 x 2 - 305/45 Mk X, 16 x 1 - 102/40 QF Mk III, 7 x 1 - 7.7/94 , 5 - 450 TT (4 beam, 1 stern)

Complement

784

 

Ship project history: First battlecruisers in the world. They have made huge impression on naval experts of all countries, however their design represented the obvious dissonance between high-power dreadnought gun armament and very weak protection.

Protection: 152-mm main belt with 3,43 m height extended from barbette "A" to the barbette "Y", closed at fore end by 178-mm and by after end by 152-mm bulkheads. Its full length was 95 m (55 % of ship length). Fore belt between barbette "A" and stem was 102-mm. Main deck over citadel was 25 mm with 25-mm slopes (51 mm over magazines), main deck from barbette "Y" to stern was 64-mm with 64-mm slopes, fore part from barbette "A" to stem covered by 38-mm deck.

Modernizations: 1910,Indomitable; 1911, Inflexible; 1/1915,Invincible: raising of fore funnel.

10/1914, Invincible, 4/1915, Indomitable: + 1 x 1 - 76/45 QF Mk I

11/1914, Invincible: - 1 x 1 - 76/45; + 1 x 1 - 47/40 Hotchkiss AA

11/1914, Inflexible: + 1 x 1 - 47/40 Hotchkiss

4/1915, Invincible; 7/1915, Inflexible: + 1 x 1 - 76/45 QF Mk I

late 1916, both survived: additional 25mm armour on the turret roofs and 25mm of additional armour over the crowns of the magazines; - 1 - 450 TT (stern)

4/1917, Indomitable: - 16 x 1 - 102/40; + 12 x 1 - 102/50 BL Mk VII.

4/1917, Inflexible: - 1 x 1 - 47/40; + 1 x 1 - 102/50 BL Mk VII AA

4/1917, Indomitable: + 1 x 1 - 102/50 BL Mk VII AA

7/1917, Inflexible: - 16 x 1 - 102/40; + 12 x 1 - 102/45 BL Mk IX.

1918, both survived: flying-off platforms on "P" & "Q" turrets for Sopwith Pup and 11/2-strutter.

1919, Inflexible: - 1 x 1 - 102/50 AA; + 1 x 1 - 76/45 QF Mk I

Naval service: Cruisers actively participated in WWI. Invincible and Inflexible have destroyed German armoured cruisers Scharnhorst and Gneisenau at Falklands in December 1914 , later Inflexible served as a flagship in Dardanelles. Indomitable shot 134 305mm shells at Dogger bank, having sunk an armoured cruiser Blücher. Invincible received 5 shells from battlecruiser Derfflinger in action at Jutland. After last hit she blown up in half by explosion of magazines. All but 3 of complement were lost. Both survivors since 1919 placed in reserve and stricken 1922.

Invincible 1910

Indomitable

 

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Ivan Gogin, 2008-09