CNN — After more than 80 years hidden beneath the waves off Rio de Janeiro, the location of a Brazilian troop transport ship torpedoed and sunk by Nazi Germany was definitively confirmed by Brazil’s navy this week. The wreck of the Vital de Oliveira was initially discovered in 2011 by a pair of brothers, Jose Luíz and Everaldo Popermeyer Meriguete. As recently as July, the Brazilian navy had told Brazil’s O Globo newspaper that it could not confirm whether the hulk lying 45 kilometers (28 miles) from the coast was indeed the ship in question. As part of a scientific...