In the afternoon of Dec 14th. Itaguai Construcoes Navais (ICN) launched the first locally built Riachuelo class submarine for the Brazilian Navy. The S-BR project within the PROSUB, submarine construction plan, came to shape after a strategic agreement between Brazil and France more than a decade ago. A new base and shipyard has been built in Itaguai, near the Brazilian nuclear research and development facilities both existing and new, to build 4 diesel electric submarines and one nuclear. DCNS, now Naval Group, was selected thus to provide the basic engineering for both conventional and nuclear projects.