Colossus-class
An item referred to the magazine Schiffbau reporting that the British 22.500 ton battleship Colossus had a contracted speed of 21 miles. The 4 shafts were each fitted out with a forward and a backward turbine. The high pressure forward and back turbines were separated, the low pressure for- and backward turbines were housed in one casing. There were no longer cruising turbines available. To compensate this were at high speeds the steam just delivered in the last stages of the high pressure turbines, while with low speeds the steam was delivered through the whole high pressure turbines. The result of separating the turbines in fore and backward turbines was a higher power during manoeuvring.(1)
Note
1. Part of the Colossus-class consisting of the Colossus and the Hercules, preceded by the Neptune-class and succeeded by the Orion-class. Building ordered under the 1908 Naval Estimates. Laid down at the Scotts Shipbuilding, Greenock, Scotland on 8 July 1909, launched in 9 April 1910, trials started on 28 February 1911, commissioned on 8 August 1911, stricken in 1920, for disposal on 30 June 1921, boys’ training ship, training hulk since 23 July 1923, sold to the Charlestown Shipbreaking Industries in August 1928 and broken up at Charlestown, Scotland from 5 September 1928.
