Laid down at the Devonport Dockyard 23 February 1909 as a result of the Naval Programme for the period 1908-1909 as an enlarged Invincible-design, launched 28 October of the same year, commissioned 24 February 1911 and sunk in the battle of Jutland 31 May 1916 by the German battle cruiser Von der Tann.
With a displacement of 18,500 long tons/18,800 tons standard or 22,130 long tons/22,485 tons full load were her dimensions 590 x 80 x 29’9” (fuel load). The two Parsons direct-drive steam turbine sets combined with 31 Babcock&Wilcox coal-fired boilers provided 43,000 ship allowing a speed of 25 knots. With a speed of 10 knots was her range 6,690 nautical miles. Her crew numbered 800 men, in the battle at Jutland however 1,017 of which just two survived her loss. he original armament consisted of 4x2-12” guns, 16x1-4” guns and 2x1-18” submerged torpedo tubes. The armour consisted of a 4-6” belt, 1.5-2.5” decks, 7” barbettes and gun turrets, 2.5” torpedo bulkheads and a 4-10” conning tower.
HMS Indefatigable
SMS Von der Tann
With a displacement of 18,500 long tons/18,800 tons standard or 22,130 long tons/22,485 tons full load were her dimensions 590 x 80 x 29’9” (fuel load). The two Parsons direct-drive steam turbine sets combined with 31 Babcock&Wilcox coal-fired boilers provided 43,000 ship allowing a speed of 25 knots. With a speed of 10 knots was her range 6,690 nautical miles. Her crew numbered 800 men, in the battle at Jutland however 1,017 of which just two survived her loss. he original armament consisted of 4x2-12” guns, 16x1-4” guns and 2x1-18” submerged torpedo tubes. The armour consisted of a 4-6” belt, 1.5-2.5” decks, 7” barbettes and gun turrets, 2.5” torpedo bulkheads and a 4-10” conning tower.
