BAP Aguirre (CH-84) was a De Zeven Provinciën-class cruiser in service with the Peruvian Navy. It was completed for the Royal Netherlands Navy in 1953 as HNLMS De Zeven Provinciën. After two decades in service, it was decommissioned in August 1976 and sold to Peru. Before being transferred to the Pacific Ocean, it underwent a major rebuild program by Rotterdamse Droogdok Maatschappij (RDM) at its shipyard in Rotterdam. Modifications included the removal of its RIM-2 Terrier SAM system and the installation of a fixed hangar and a flight deck. The upgrade was finished on October 31, 1977 and the ship was commissioned on February 24, 1978 at the Dutch naval base of Den Helder. Renamed Aguirre, in honor of the Peruvian Commander Elías Aguirre, it arrived to its new homeport of Callao on May 17, 1978.

BAP Aguirre (CH-84) in 1978
History
Netherlands
Name	De Zeven Provinciën
Builder	Rotterdamsche Droogdok Maatschappij, Rotterdam
Laid down	September 5, 1939
Launched	December 19, 1941
Commissioned	November 18, 1953
Decommissioned	August 1976
Out of service	Sold to Peruvian Navy on August 1976
Motto	Ad Victoriam
Fate	Transferred to Peru in August 1976
Peru
Name	Aguirre
Acquired	August 1976
Commissioned	February 24, 1978
Decommissioned	March 21, 1999
Renamed	BAP Almirante Grau between August 7, 1986 and February 15, 1988
Homeport	Callao
Fate	Scrapped in 2000
General characteristics
Class and type	De Zeven Provinciën-class cruiser
Displacement	9,681 tons standard 12,165 tons full load
Length	187.32 m
Beam	17.25 m
Draught	6.72 m
Propulsion	4 Werkspoor-Yarrow three-drum boilers 2 De Schelde Parsons geared steam turbines 2 shafts; 85,000 shp (63,000 kW)
Speed	32 knots (59 km/h)
Range	6,900 nm at 12 knots (22 km/h)
Complement	47 officers, 606 enlisted
Sensors and processing systems	1 Signaal LW-02 early warning 1 Signaal DA-02 surface search 1 Signaal ZW-03 surface search 1 Signaal M25 fire control 3 Signaal M45 fire control 2 Decca 1226 navigation 1 CWE-610 N hull sonar
Armament	2 Bofors 152/53 twin guns 3 twin Bofors 57/60 mm guns 4 single Bofors 40/70 mm guns
Armor	50-76 mm belt 50-125 mm turrets 50-125 mm conning tower
Aircraft carried	3 ASH-3D Sea King helicopters
Aviation facilities	Main flight deck: 35 × 17 m Hangar roof helicopter platform: 20 × 16.46 m Fixed hangar for 3 heavy helicopters.

In service, the Aguirre participated in several exercises, including the multinational UNITAS manoeuvres. From August 7, 1986 through February 15, 1988, while the BAP Almirante Grau (CLM-81) underwent a major refit in the Netherlands, the Aguirre was temporarily renamed Almirante Grau and designated as fleet flagship. By the 1990s the ship systems were beginning to show their age, but lack of funds prevented any major upgrade. Finally, on March 21, 1999, the ship was decommissioned.