ProtectedSubmarines Brazilian N-sub a step closer By ANI - October 21, 2023 0 274 Brazilian nuclear submarine a step closer On October 4, 2023, the first steel plates of a test section for the future nuclear-powered attack submarine “Álvaro Alberto” were cut during a ceremony organized by Itaguaí Construções Navais (ICN) and the Brazilian Navy, Naval News reports. Please Login to view this content. (Not a member? Join Today!)