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Río Iguazú GC83 - A Z-28 type naval patrol craft, was damaged by BAe Sea Harrier FRS.Mk.1s on 22 May in Choiseul Sound while steaming towards Goose Green with two 105 mm guns aboard, beached in Button Bay. The guns were taken off by Argentine helicopter, though one was damaged, and were used in the defence of Darwin. Later captured by British Forces, but attacked by a Westland Lynx HAS.Mk.2/3 (XZ691) from HMS Penelope firing a Sea Skua on 13 June 1982. The wreck was towed to Goose Green after the conflict.
Various websites.
Argentina SG2339

ARA "DOCTOR MANUEL MANTILLA" GC 24
Displacement: 1,000 tons full load
Dimensions: 67.00 x 10.50 x 3.25 meters
Propulsion: 2 shafts; 2 Bazán-MTU MA-16V956 TB91 diesels,
9,000 bhp (6,620 kW), 7,500 bhp sustained, 21.5 knots
Range: 5,000/18
Endurance: 20 days
Fuel: --- tons
Electric: 710 kW
Crew: 38 (9 officers & 4 cadets)
Radar: 2 x Decca AC 1226 navigation
Fire Control: None.
EW: None.
Aviation: Helicopter deck & hangar for one light helicopter.
Armament: 1 x 40 mm AA 70 cal. Breda-Bofors SP-48 (1,456 rounds),
2 x 12.7 mm MGs (I x 2)
Builder: Bazán, El Ferrol, E.U. (Spain)
Notes: Used to carry Hughes 369HS helicopters but these have been
retired without replacements. No photographs of Hughes 369HS
helicopters on deck have ever been published. Normally carry a
6.1 m rigid craft with Evinrude outboard for rescue operations.
Can carry 12 additional personnel. Fitted with a Magnavox
MS 1102 SATNAV receiver.

Number Name Year FLT Homeport Notes
GC 24 Doctor Manuel Mantilla 1982 PNA Buenos Aires ---
GC 25 Azopardo 1983 PNA Buenos Aires ---
GC 26 Thompson 1983 PNA Mar del Plata ---
GC 27 Prefecto Fique 1983 PNA Cdro Rivadavia ---
GC 28 Prefecto Derbes 1983 PNA Bahía Blanca Probably out of service.