page_title: Alsedo-class destroyer
section_title: Design and construction
hierarchical_section_title: Alsedo-class destroyer / Design and construction
caption_attribution_description: Español: Destructor Lazaga, de la Armada Española
context_page_description: The Alsedo class was a Spanish class of destroyer. Three ships were built, based on a British design, entering service between 1924 and 1925. They all served through and survived the Spanish Civil War, two on the Republican side and one with the Nationalists. The class was retired in 1957–1961.
context_section_description: On 17 February 1915, the Spanish Cortes (Parliament) passed a navy law authorising a large programme of construction for the Spanish Navy, including three destroyers of British design, the Alsedo class, to be built in Spain at the Sociedad Española de Construcción Naval (SECN) dockyard at Cartagena.
  The design chosen, a joint effort by Vickers and John Brown, was of similar layout to the Hawthorn Leslie variant of the M-class destroyer. The British Director of Naval Construction  objected to current British destroyer designs being sold to a foreign nation, but could not stop the sale.
  The ships were 86.25 metres (283 ft) long overall and 83.82 metres (275 ft), with a beam of 8.23 metres (27 ft) and a draught of 4.57 metres (15 ft). Displacement was 1,060 tonnes (1,043 long tons) standard and 1,336 tonnes (1,315 long tons) full load. The ships were propelled by two geared steam turbines driving two shafts, and fed by four Yarrow water-tube boilerss, giving a distinctive four-funneled silhouette. This machinery gave the ships a design speed of 34 knots (63 km/h; 39 mph), although Alsedo did reach a speed of 37.2 knots (68.9 km/h; 42.8 mph) during trials before its armament was fitted. 276 tonnes (272 long tons) of oil was carried, giving a range of 1,500 nautical miles (2,800 km; 1,700 mi) at 15 knots (28 km/h; 17 mph). The ships had a crew of 86.
  The ship's main gun armament consisted of three Vickers 4-inch (102 mm) guns (license-built in Spain) in three single mounts, with one forward, one aft the third gun between the second and third funnels, while two 47 mm anti-aircraft guns protected against air attack. The anti-aircraft guns were later replaced by four 20 mm cannon. Four 21-inch (533 mm) torpedo tubes were mounted in twin banks, with the class being the first Spanish destroyers to carry torpedoes of this size. Two depth charge throwers were fitted in about 1945. A rangefinder was mounted on the ship's bridge.
  The First World War caused shortages of materials and equipment sourced from Britain, so the ships were not laid down until 1920. By this time, destroyer design had advanced, making the Alsedo class obsolete. Plans to build three more ships of the class were reconsidered; eventually, a modern and much larger design was selected, which became the Churruca class.
caption: Lazaga
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