Rubis

The Rubis class is a class of nuclear-powered attack submarines operated by the French Navy. It originally comprised six boats, the first entering service in 1983 and the last in 1993. Two additional units originally planned were cancelled as a result of post-Cold War budget cuts. All submarines of the Rubis class have been based at Toulon and are part of the Escadrille de sous-marins nucléaires d'attaque. Smaller than contemporary designs of other major world navies, the Rubis class shares many of its system designs with the conventionally-powered Agosta class. In the late 1980s, the Rubis class was proposed to Canada in the context of their plan to acquire nuclear-powered submarines. The submarines of the class were built in two batches, with the final two built to an improved standard to reduce noise emissions that plagued the original design.