SN Álvaro Alberto (SN-10) Nuclear Submarine
Type: submarine
Domain: sea
Country of Origin: Brazil
Manufacturer: Avibras
First Deployed: 2035
Overview
Brazilian nuclear-powered attack submarine representing the most ambitious military-industrial programme in Latin American history — making Brazil the first nation in Southern Hemisphere to operate nuclear submarines and only the seventh nation globally with indigenous nuclear submarine capability (after USA, Russia, UK, France, China, India). The SN Álvaro Alberto (SN-10, where SN = Submarino Nuclear) is lead boat of planned class of 4-6 nuclear submarines under PROSUB (Submarine Development Programme) developed with French technical assistance but featuring Brazilian nuclear reactor designed and built domestically. Expected displacement of 6,000+ tonnes with length of 100 metres. Features Brazilian-designed pressurized water reactor (PWR) providing unlimited underwater endurance (limited only by crew endurance and supplies), conventional weapons with six 533mm torpedo tubes for heavyweight torpedoes and potentially submarine-launched anti-ship missiles, modern combat management system, advanced sonar suite, and special forces deployment capability. Expected submerged speed exceeding 25 knots with unlimited range. Construction at Itaguaí Naval Complex near Rio de Janeiro where Brazil built dedicated nuclear submarine shipyard. Programme experienced delays with revised completion timeline targeting late 2020s for launch and early 2030s for commissioning. The nuclear submarine provides strategic capability for protecting Brazilian offshore oil reserves (pre-salt layer discoveries worth trillions of dollars), patrolling South Atlantic, and deterring potential threats. Represents Brazilian strategic autonomy and technological independence. The reactor development provides dual-use technology applicable to civilian nuclear power.
Technical Specifications
| notes | Would make Brazil only 7th nation to operate nuclear submarines |
|---|---|
| weapons | Torpedo tubes, possibly cruise missiles |
| propulsion | Brazilian-designed pressurized water reactor |
| expected_ioc | 2030s |
| displacement_estimated | 6,000 tonnes (submerged) |
Operators
- Brazil
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