The Nazario Sauro class are submarines operated by the Italian Navy. All boats were built by Fincantieri in Monfalcone. There are three sub groups built in four batches: * Nazario Sauro class (I-II Sauro batch): * S518 Nazario Sauro - completed 1980 - decommissioned 2002 (named after Nazario Sauro); since September 2009, this unit has been a museum ship in Genoa (part of Galata - Museo del mare). * S519 Carlo Fecia di Cossato - completed 1980 - decommissioned 2005 (named after Italian World War II submarine commander Carlo Fecia di Cossato) * S520 Leonardo da Vinci - completed 1982 - targeted for decommissioning, training activity only (named after Leonardo da Vinci) * S521 Guglielmo Marconi - completed 1982 - decommissioned 2003 (named after Guglielmo Marconi) *