Her keel was laid down at the HM Dockyard at Portsmouth on 2 October 1905, launched on 2 December a year later, commissioned on 2 December, decommissioned in 1919 and broken up in 1923. With a displacement of 18.420/18,120 long tons (standard)-21.060 tons/20.730 long tons (deep load) tons were her dimensions 161 x 25 x 7,9 metres. Her engines supplied 22.500 hp allowing a speed of 21 knots. Her crew numbered between 695 and 773 men. The armament consisted of 5x2-30,5cm guns, 27x1-12pdr guns and 5-45,5cm torpedo tubes. She was protected by armour consisting of a 4-11” thick belt, a 0.75-3” inch deck, the barbettes by 4-11”, gun turrets by 3-12”, the conning tower by 11” and further more 8” bulkheads. Her design was revolutionary and since then there were pre-dreadnoughts of a dated design due to the dreadnoughts-battleships of her or even an improved design. The British First Dea Lord of the Admiralty admiral Sir John Fisher is called her father.(1)
Note
1. John Arbuthnot Fisher (25 January 1841 Ramboda, Sri Lanka-10 July 1920 London), served in the Royal British navy between 1854 and 1909 and was First Sea Lord in 1904-1910 and 1914-1915.
