For several years, digital engineering has increasingly taken a more important place in the strategic issues of mechanical engineering companies. Our proposition is a global approach that enables technical data to be managed and used throughout the product life-cycle. This approach aimed to provide assistance for costing, development and the industrialization of the product, and for the capitalization, the reuse and the extension of fundamental knowledge. This approach has been experimented within a company environment that designs and produces families of ship equipment parts. This case study is presented together with the software that has been developed for this company.