CMN ships are built entirely undercover, using modern shipbuilding technology linked to the highly sophisticated CIRCE-CATIA-RIMBAUD computer assisted design and manufacturing system which is used to produce lines fairing, hydrostatic and stability calculations, detailed two and three dimensional, structural, piping and electrical drawings and computer controlled cutting machinery operations in an integrated system.

This modern technology linked to digitally controlled plasma-cutting and burning machines, together with automatic welding equipment, enables CMN to maintain a very high standard of hull construction. Spacious and well equipped outfit workshops with adjacent storage facilities,plus a complete land based test site facility enable CMN to effectively undertake complex combat system integration and complete machinery installation before the ships leave the building halls and travel to a 3500 tonnes synchrolift and the test and trials facility.