"2008-12-23" . . . . . . . "46.3" . "Under construction" . . . "\u00C1lvaro Alberto" . . . "Brazilian submarine \u00C1lvaro Alberto" . . . . . . "9.8" . "under construction" . . . "first nuclear submarine" . "Brazilian submarine \u00C1lvaro Alberto" . "''\u00C1lvaro Alberto''-class submarine" . . "100.0" . "''\u00C1lvaro Alberto''-class" . . "''\u00C1lvaro Alberto'' class" . "''\u00C1lvaro Alberto''" . . "6.0E9" .