Indefatigable class battlecruisers (RN, 1909)

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Displacement: 18,500t (Indefatigable 18,470t) load; 22,110t (Indefatigable 22,080t) deep load
Dimensions: 179.8m oa × 24.4m × 8.1m mean
Machinery: 4-shaft Parsons turbines, 32 Babcock & Wilcox boilers, 44,000shp (Indefatigable 43,000shp) = 25kts. Coal 3170t, oil 840t (Indefatigable 3340t/870t). Range 6330nm at 10kts
Armour: 6in-4in (150mm-100mm) belt, 4in (100mm) bulkhead, 7in-3in (180mm-80mm) barbettes, 7in (180mm) turret faces, 10in (250mm) CT, 2½in-1in (65mm-25mm) decks
Armament: 8-12in (30.5cm)/45cal Mk X (4×2), 16-4in (10.2cm)/50cal Mk VII, 4-3pdr (47mm), 3-18in (45.7cm) TT (1 beam, 2 stern)
Complement: 800


Name Builder Laid down Launched Comp Fate Note
Indefatigable Devonport DYd 23 Feb 1909 28 Oct 1909 Apr 1911 31 May 1916 sunk at North Sea during the Battle of Jutland
Australia John Brown 23 Jun 1910 25 Oct 1911 Jun 1913 12 Apr 1924 scuttled Served by RAN (Royal Austrailain Navy)
New Zealand Fairfield 20 Jun 1910 1 Jul 1911 Nov 1912 19 Dec 1922 sold for BU funded by New Zealand dominion