Baleares-class frigate

300px Spanish frigate Baleares (F71) during exercise Ocean Venture 1981
Class overview
Name:	Baleares class
Builders:	Navantia, Ferrol, Spain
Operators:	Spanish Navy
Succeeded by:	Santa María class
Built:	1969-1976
In commission:	1974 -2008
Completed:	5
Retired:	5
General characteristics
Type:	Frigate
Displacement:	3015 tons (standard), 4177 tons (full load)
Length:	438 ft (134 m)
Beam:	46 ft 9 in (14.25 m)
Draught:	24 ft 9 in (7.54 m)
Propulsion:	1 shaft, one Westinghouse steam turbine, 2 V2M boilers. total 35,000 shp (maximum),
Speed:	28 knots (52 km/h)
Complement:	256
Sensors and processing systems:	AN/SPS-52B Air Search Radar RAN-12L/X Air Search Radar AN/SPS-10F Surface Search Radar DE1160LF Sonar AN/SQS-35(v)Variable Depth Sonar system AN/SPG-53 Mk68 Gun Fire Control System
Electronic warfare & decoys:	Ceselsa Deneb/Canopus, Mk36 SROC decoy launchers
Armament:	one Mk-16 8 cell missile launcher for RUR-5 ASROC and Harpoon missiles one Mk42 5-inch/54 caliber gun Mark 46 torpedoes from four single tube launchers) 2 × quad Mk141 launchers for Harpoon missiles. 1 Standard SAM launcher (16 Missiles). 2 20mm Meroka CIWS gun systems.
Aircraft carried:	none

The Baleares class are a group of five frigates built for the Spanish navy in the 1970s. The ships are a modified version of the American Knox-class frigates. The key differences are the replacement of the Sea Sparrow PDMS and ASW helicopter facilities by Standard SAM and associated radars. They received a SPS-52B 3D search radar and one SPG-51 illuminator for the Standard SM-1 medium range SAM, fired from a Mk22 16-round single arm launcher. The SQS-26 long range LF sonar was replaced by a SQS-23G MF sonar, while two Mk25 tubes for Mk37 torpedoes were mounted in the transom. The SQS-35 variable depth sonar was maintained.

The five ships were upgraded several times during their service lives. They received a Spanish TRITAN combat data system and the EW suite was upgraded with Spanish equipment. Mk36 SROC decoy launchers were also added, as well as two quadruple Harpoon launchers amidships. Two Meroka CIWS gun system were also fitted. The old SQS-23G sonar was replaced by a modern DE-1160LF set built in Spain (a larger, lower frequency version of the SQS-56 sonar) and the Mk25 tubes were removed to allow for female crewmember berthing.

The ships have recently been retired, in order to assume the costs of the F100 frigates (the Álvaro de Bazán class), which will replace the Baleares class on a one to one basis.

Ships in class

All ships were built in Ferrol. They made up the 31 Escort Squadron, based in Ferrol. The Spanish Navy adopted the Standard SAM, providing the class an anti-air (A/A) capability, which the American Knox class lacked.

Ship	Pennant number	Launched	Commissioned	Status
SPS Baleares	F71	20 August 1970	24 September 1973	Decommissioned 2004
SPS Andalucia	F72	30 March 1971	23 May 1974	Decommissioned 2005
SPS Cataluna	F73	3 November 1971	16 January 1975	Decommissioned 2004
SPS Asturias	F74	13 March 1972	2 December 1975	Decommissioned 30 June 2009
SPS Extremadura	F75	21 November 1972	10 November 1976	Decommissioned 2006

References

• Conway's All the World's Fighting Ships 1947 -1995