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    HomeDesign NewsNAPA, ClassNK Launch Data Link to Support 3D Ship Design Approval Process

    NAPA, ClassNK Launch Data Link to Support 3D Ship Design Approval Process

    HELSINKI, Finland, Mar 31, 2022 – NAPA, the leading provider of maritime software, services, and data analysis, and classification society ClassNK, have strengthened their partnership to support the use of 3D models in the ship design approval process. By streamlining data sharing between design and class approval software, this move brings 3D model-based approval one step closer to reality. It saves time and allows designers, engineers, and class societies to collaborate more effectively on vessel designs by using a consistent 3D model throughout.

    The partnership will enhance data sharing between NAPA’s 3D Computer-aided design (CAD) software NAPA Designer and ClassNK’s design support software PrimeShip-HULL. The two systems will now be directly linked through NAPA’s Application Programming Interface (API) rather than relying on intermediate files.

    This streamlined system will reduce the person-hours required for data linkage by more than 30% compared to the current method while also improving the accuracy of linkage and limiting the risk of errors.

    An example of visualization of prescriptive rule calculation result on NAPA Designer

    This latest upgrade will also enable closer collaboration between designers and class societies. It allows users of the PrimeShip-HULL system to carry out direct strength and prescriptive calculations on NAPA Designer seamlessly. Moreover, any amendment to dimensions following these calculations will be directly reflected in NAPA Designer’s 3D models. The new function is currently available for bulk carriers and oil tankers, applying the Common Structural Rules for Bulk Carriers and Oil Tankers (CSR BC & OT) requirements. The scope will be expanded to more ship types and structures in the future.

    An example of seamless integration between NAPA and Direct Strength Assessment (DSA) software

    Tapio Hulkkonen, Director, Product Management, Design Solutions at NAPA, said: “The use of 3D models throughout the design process of a ship, including for the class approval process, is an integral part of the future of naval architecture. At NAPA, we are proud to drive this vital transition forward by developing solutions that enable all stakeholders to collaborate on the same 3D model, instead of wasting time and resources on multiple conversions to 2D drawings. This makes the design process more efficient, saves time and money, and reduces the risk of errors. At a time when ship designers and engineers need to innovate rapidly to create more efficient vessels, and continue to raise safety standards, this couldn’t be more important.”

    Dr. Toshiro Arima, Corporate Officer, Director of Rule Development and ICT Division at ClassNK, said: “As the capabilities of 3D computer-aided design software improve, we see an acceleration in the use of 3D technologies in the shipbuilding industry. At ClassNK, we are dedicated to supporting this transition with a powerful software environment that puts 3D models at the forefront to facilitate approval and collaboration between all partners. Today’s announcement builds on previous collaboration with partners on a study to facilitate the class approval process using 3D models, and we are proud to be at the forefront of innovation on this vital issue.”

    About NAPA

    In its over 30 years of operation, NAPA has become a global leader in developing and scaling software, services and data analysis for a safer, smarter, and more sustainable maritime industry.

    NAPA operates globally, with 190 employees in ten countries in Europe, Asia and the Americas. To date, NAPA has 420 user organizations for its design solutions, nearly 3,000 installations onboard vessels and a growing number of subscribers for its cloud-based fleet services. For more information, visit

    About ClassNK

    Founded in 1899, ClassNK is a ship classification society dedicated to safer and cleaner seas. ClassNK provides diverse technical services including surveys and classifications of ships and marine structures based on its own rules, statutory certifications on behalf of more than 110 flag states, management system certifications in line with ISO and other international standards.

    For more information, visit

    Nitin Patil
    Editor and Director of Content, Nitin completed his Master's in Mass Communication & Journalism and having 13 years of work experience as an editor, content writer with renowned international technical magazines and media companies. He is associated with CAD,CAM industry since 2008.

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