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. Scorpène-class submarine: The Scorpène-class submarines are a class of diesel-electric attack submarines jointly developed by the French Direction des Constructions Navales (DCN) and the Spanish company Navantia, and now by DCNS.
Scorpène-class submarine