An item reported that the new Spanish cruiser executed end February a 24 hours trial. During 8 hours was the boilers oil fuelled, that 8 hours coal-fuelled and the last 8 hours a mix of oil and coal. Her design speed was with a horsepower of 45.000 ahp to be 28 miles and with a speed of 13 miles was the range to be 3.000 miles while coal-fuelled and 5.000 miles while oil-fuelled. Coal bunker capacity was 230 tons and oil fuel bunker capacity 500 tons. The editors of the Dutch magazine however doubted if this figures were correct. Despite being double the coal bunker capacity was as the range with just 66% larger.(1)
1. Ordered in 1915 but not earlier launched as 27 July 1922 at the Sociedad Espanola de Construccion Naval at Ferrol due to lacking material caused by the First World War, commissioned in March 1925 and wrecked 1 July 1932.