Marlin-class submarine

The Marlin-class submarines are a proposed class of diesel-electric attack submarines. The design features diesel propulsion and an additional air-independent propulsion (AIP), developed solely by the French company DCNS, formerly DCN, after the Spanish company Navantia (formerly Bazan, then Izar), its partner in the Scorpène-class submarine design, went with Lockheed Martin to build the competing S-80-class submarine, which was selected by the Spanish Navy to form its next-generation submarine force, at the expense of the Scorpène.

Not much is known about this design, however DCNS's successful Scorpène class is approximately 1,800 tons while the S-80 is 3,500 tons. Therefore it is likely that DCNS's Marlin-class design is larger than the Scorpène in order to compete on the international market with Navantia's bigger S-80 submarine, currently under construction for the Spanish Navy.