Veinticinco de Mayo-class cruiser

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Argentinian Cruiser ARA 25 de Mayo
Class overview
Builders	OTO, Livorno
Operators	Argentine Navy
In commission	1931 - 1961
Planned	3
Cancelled	1
Retired	2
General characteristics ARA Veinticinco de Mayo
Displacement	6,800 tons (standard) 9,000 tons (full load)
Length	171 m (561 ft 0 in)
Beam	17.82 m (58 ft 6 in)
Draught	4.66 m (15 ft 3 in)
Propulsion	2 shaft Parsons turbines, 6 oil-fired boilers, 85,000 hp (63,000 kW)
Speed	32 knots (59 km/h)
Range	8,030 nautical miles (14,870 km) at 14 knots (26 km/h)
Complement	780
Armament	6 × 190 mm (7.5 inch)/52 caliber guns (3 × 2) 12 × 102 mm (4 inch)/45 caliber DP guns (6 × 2) 6 × Vickers-Terni 40/39 mm AA guns 6 × 533 mm (21-inch) torpedo tubes
Armour	70 mm (2.75 inch) inch belt 25 mm (1 inch) deck 50 mm (2 inch) gun turrets 60 mm (2.3 inch) conning tower
Aircraft carried	2 × Grumman J2F Duck aircraft
Aviation facilities	Catapult launcher

The two Veinticinco de Mayo-class heavy cruisers served in the Argentine Navy through World War II. They were the only post-Washington Naval Treaty heavy cruisers built for a South American navy. Both ships of the class were built in Italy by the OTO company, and commissioned into the Argentine Navy in 1931.