The Agosta-class submarines are French diesel attack submarines (SSKs) used by Spain, Pakistan and formerly by France. The French Navy grouped this model of submarine in their most capable class as an océanique, meaning "ocean-going." A modernised version built for Pakistan, the Agosta 90B, has a crew of 36 plus 5 officers and can be equipped with the MESMA air-independent propulsion (AIP) system.