The Álvaro de Bazán class (also known as the F100 class of frigates) are a new class of Aegis combat system-equipped air defence frigates entering service with the Spanish Navy. They are being built in the Spanish factory of Navantia in Ferrol and are named after Admiral Álvaro de Bazán. The F105 will be the basis of the Australian Hobart-class destroyer (previously known as the "Air Warfare Destroyer"). The Australian government announced in June 2007 that, in partnership with Navantia, three F100 vessels will be built for the Royal Australian Navy with the first due for delivery in 2014.