What class of submarines is based upon a class of diesel-electric attack submarines jointly developed by French Direction des Construtiones Navales and the Spanish company Navantia?
Kalvari-class submarine The "Kalvari" class is a class of submarines based on the Scorpène-class submarine being built for the Indian Navy. It is a class of diesel-electric attack submarine which is designed by French "naval defence and energy" company DCNS and being manufactured by Mazagon Dock Limited in Mumbai.
Argonauta-class submarine The Italian "Argonauta"-class submarine was a series of 600 ton submarines built for and operated by the Regia Marina. They saw service in World War II. 7 of the class were constructed in total.