Brazil-France submarine programme Brazil has launched the third of four attack submarines built with French technology in a $10 billion deal that aims to deliver the country’s first nuclear-powered submarine in the next decade Tonelero: Third Scorpène-class diesel-powered submarine, built by Brazilian Navy to design of French shipbuilder Naval Group, launched in Itaguai shipyard Length: 70.6m Displacement: 1,870 tonnes Max. speed: 21 knots (39km/h) Diving depth: 400m Endurance: Up to 70 days Riachuelo Commissioned 2022 Humaitá 2024 Tonelero 2024 Angostura 2025 Álvaro Alberto 2032-34 Length: 100m Hull diameter: 9.8m Displacement: 6,000 tonnes Speed: 25 knots (46km/h) Diving depth: 350m Crew: 100 Pressurised water reactor 48MW Developed in Brazil Coolant outlet Fuel assembly Reactor vessel Armament: 6 × 533mm torpedo tubes Control rods Coolant inlet BRAZIL Itaguai ATLANTIC OCEAN Submarines will patrol Brazil’s 3.5 million sq km offshore waters containing vast oil and gas reserves Sources: PROSUB, Navy Recognition Picture: Newscom © GRAPHIC NEWS