The Barracuda class of nuclear powered attack submarine was designed by shipbuilder Naval Group for the French Navy. Construction of the first vessel Suffren began in 2007 and she was commissioned on 6 November, 2020. Walton valves were recommended for this demanding application and will be fitted to all vessels of the class.
Four more vessels are under construction, with a fifth planned. Delivery of the submarines will take place through the 2020s.
With a surface displacement of 4,600t the vessels will provide the French Navy with a cruise missile strike capability.