Atrevida-class corvette

Last updated
Atrevida F61 PA61.jpg
Atrevida after classification as a patrol vessel
Class overview
Builders Bazán, Cartagena and Cadiz
OperatorsFlag of Spain.svg  Spanish Navy
Succeeded by Serviola-class patrol boat
Built1950–1960
In commission1954–1992
Completed6
Scrapped6
General characteristics
Type Corvette
Displacement927  t (912 long tons) standard
Length75.5 m (247 ft 8 in) o/a
Beam10.2 m (33 ft 6 in)
Draught2.6 m (8 ft 6 in)
Installed power2,200  kW (3,000  shp)
Propulsion2 × Sulzer diesel engines
Speed18.5 knots (34.3 km/h; 21.3 mph)
Range8,000  nmi (15,000 km; 9,200 mi)
Complement132
Armament
  • 1 × 105 mm (4.1 in) gun
  • 2 × 37 mm anti-aircraft guns
  • 12 × 20 mm anti-aircraft guns
  • 20 mines
  • Depth charges

The Atrevida class was a class of six corvettes built for the Spanish Navy in the 1950s.

Contents

Design and construction

In 1945, the Spanish State drew up a large construction programme to re-equip the Spanish Navy, which had many old and worn out ships, as shipbuilding had ground to a near halt during the Spanish Civil War and the Second World War. The programme included 18 destroyers, [lower-alpha 1] six corvettes, six submarines together with motor-torpedo boats and patrol vessels. [1]

The corvettes, the Atrevida class, were 75.5 metres (247 ft 8 in) long overall and 68 metres (223 ft 1 in) between perpendiculars, with a beam of 10.2 metres (33 ft 6 in) and a draught of 2.6 metres (8 ft 6 in). Displacement was 927 tonnes (912 long tons ) standard and 1,038 tonnes (1,022 long tons) full load. [2] Two Sulzer diesel engines rated at a total of 3,000 shaft horsepower (2,200 kW) drove two propeller shafts, giving a speed of 18.5 knots (34.3 km/h; 21.3 mph). [2] [3] 100 tons of oil were carried, given a range of 8,000 nautical miles (15,000 km; 9,200 mi) at 10 knots (19 km/h; 12 mph). [2]

As designed, the ships had a gun armament of one 105 mm (4.1 in) dual-purpose gun, backed up by a close-in anti-aircraft armament of two 37 mm guns (in one twin mount) and twelve 20 mm anti-aircraft guns (in three quadruple mounts). Four depth-charge throwers were fitted, and 20 mines could be carried. The ship had a crew of 132. [2]

Construction of the first two ships of the class, Atrevida and Descubierta began at Bazán's (now Navantia) Cartagena shipyard in 1950, [3] but economic problems slowed construction, and the remaining ships were not laid down until 1953. The first two ships were completed in 1954–1955, but US Mutual Defense Assistance Programme funding allowed the remaining four ships to be completed with modernised armament and sensors more suitable for anti-submarine warfare. The 105 mm gun was replaced by a single US 3-inch (76 mm) Mark 26 semi-automatic anti-aircraft gun, with short range anti-aircraft armament consisting of three 40mm Bofors L/70 guns. Anti-submarine armament consisted of two Hedgehog anti-submarine mortars, supplemented by eight depth charge mortars and two depth charge racks. Sensors consisted of SPS-5B surface search radar and QHBa sonar. Displacement increased to 1,013 tonnes (997 long tons) standard and 1,153 tonnes (1,135 long tons) full load. The four ships still under construction completed in 1959–1960, with Atrevida converting to the revised standard in 1960. [4] [5]

Service

The unmodified Descubierta was stricken in 1971, [5] [lower-alpha 2] with Diana in 1973. [2] [6] [lower-alpha 3] It was planned to withdraw Atrevida and Villa de Bilbao from service in 1979, but instead, all four ships were refitted for patrol work. Their sonar and anti-submarine armament was removed and they were redesignated as Patrullero de Altura (PA). They patrolled in the Atlantic between Gibraltar and the Canary Islands until replaced by Serviola-class patrol boats from 1991. [2] [7] [8] The last of the class, Atrevida, was stricken in 1992. [2]

Ships

NamePennant Number [lower-alpha 4] Built byLaid down [2] Launched [2] Completed [2] Fate [2]
Atrevida F61 Bazán, Cartagena 26 June 19502 December 195219 August 1954Stricken 1992
Descubierta F51Bazán, Cartagena26 June 19509 June 19521 February 1955Stricken 1971 [5]
Diana F63Bazán, Cartagena27 July 195329 April 195513 May 1960Stricken 1973
Nautilus F64Bazán, Cadiz 27 July 195323 August 195615 December 1959Stricken 1991
Princesa F62Bazán, Cartagena18 March 195331 March 19563 October 1959Stricken 1991
Villa de Bilbao [lower-alpha 5] F65Bazán, Cadiz18 March 195319 February 19582 July 1960Stricken 1991

Notes

  1. ↑ The Oquendoclass and Audazclass
  2. ↑ Conway's states Descubierta was stricken in 1978. [2]
  3. ↑ Combat Fleets states Diana was stricken in 1972. [7] [8]
  4. ↑ From 1961. [9]
  5. ↑ ex-Favorita

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