Question: 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?
Sentence (from "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.
Relevant evidence: Yes