The Type 212A is a class of diesel-electric attack submarine developed by Howaldtswerke-Deutsche Werft AG (HDW) for the German Navy (German: U-Boot-Klasse 212 A), and the Italian Navy where it is known as the Todaro class. It features diesel propulsion and an additional air-independent propulsion (AIP) system using proton-exchange membrane (PEM) compressed hydrogen fuel cells from Siemens Energy. The submarines can operate at high speed on diesel power or switch to the AIP system for silent slow...
