Brazilian submarine Álvaro Alberto

*Nuclear attack submarine Álvaro Alberto*
	Model of the submarine, 2024
History
Brazil
Name	Álvaro Alberto
Namesake	Álvaro Alberto da Motta e Silva
Ordered	23 December 2008
Builder	ICN
Cost	$3.8 billion (2018 budget report, construction plus R&D costs, at 2024 exchange rate)
Launched	2029
Commissioned	2032 to 2034
Homeport	Madeira Island
Identification	SN10
Status	Under construction
General characteristics
Type	Nuclear attack submarine
Displacement	6,000 t (5,900 long tons)
Length	100 m (330 ft)
Beam	9.8 m (32 ft)
Propulsion	1 × Pressurized water reactor, 48 MW (64,000 hp), LEU 20%; 1 × Nuclear turbo–electric engine ; 1 × Shaft;
Speed	25 knots (46 km/h; 29 mph)
Range	Unlimited range, up to 25 years (nuclear fuel)
Complement	100
Sensors &; processing systems	Naval Group SUBTICS combat management system; Thales TSM 2233 Eledone hull and flank array passive sonar; Thales Safare/S-Cube hull active sonar; Safran Series 20 target identification and classification system;
Electronic warfare; & decoys	Thales DR 3000/ITT AR 900 electronic support measures; Naval Group Contralto-S decoy launchers; CANTO anti-torpedo countermeasures;
Armament	6 × 533 mm (21 in) torpedo tubes:; 8 × SM39 Exocet anti-ship missiles; 18 × F21 heavy-weight torpedoes; 30 × naval mines;
Notes	Sources:

Álvaro Alberto, Brazil's first nuclear-powered submarine, is the fifth unit of the Riachuelo class based on the French Scorpène class and is part of a strategic partnership signed between France and Brazil on 23 December 2008 that created the Submarine Development Program. The submarine was named after the former Vice Admiral and scientist Álvaro Alberto da Motta e Silva, who was the responsible for the implementation of the country's nuclear program. He also served as President of the United Nations Atomic Energy Commission between 1946–47, and as President of the Brazilian Academy of Sciences for two terms.