Brazil's Nuclear Powered Attack Submarine "SNB" SSN Program Postponed Until 2025.

Launched in 1979, the project has already been delayed in the past. The development of a nuclear submarine was integrated as part of a larger program, the PROSUB programme (PROgrama de SUBmarinos) during president Lula's mandate. Tthis is one of the main projects of the Brazilian Navy

The PROSUB programme covers the design and construction of four Scorpene conventional submarines, assistance and expertise for the non-nuclear part of the future SSN (the hull) and associated shore-based infrastructure through a technology transfer agreement. Under the agreement, DCNS is providing expertise for the design of the naval base and the infrastructure needed to build and maintain the submarines.

According to Admiral Leal Ferreira, work is proceeding on schedule for the naval base and submarine shipyard. DCNS and Odebrecht are the main contractors.