ClassNK and NAPA to improve 3D model workflow for ship design approval

NAPA and parent company ClassNK are to work together in supporting the use of 3D models in the ship design approval process, with the goal of streamlining data sharing between design and class approval software.

The firms aim to simplify the process for 3D model-based approvals and provide a means for designers, engineers, and class societies to collaborate on vessel designs by using a consistent 3D model throughout.

The new partner project will improve data sharing between NAPA’s 3D Computer-aided design (CAD) software NAPA Designer and ClassNK’s design support software PrimeShip-HULL, directly linking the two systems through NAPA’s Application Programming Interface (API) rather than relying on intermediate files.

The companies note that this system should reduce the person-hours required for data linkage by more than 30% compared with current methods, while also improving the accuracy of data exchange and limiting the risk of errors.

The upgrade will additionally enable closer collaboration between designers and class societies, allowing PrimeShip-HULL users to carry out direct strength and prescriptive calculations on NAPA Designer and have any amendment to dimensions following these calculations directly reflected in 3D models.

“As the capabilities of 3D computer-aided design software improve, we see an acceleration in the use of 3D technologies in the shipbuilding industry,” said Dr Toshiro Arima, Corporate Officer, Director of Rule Development and ICT Division at ClassNK.

“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.”

The new functionality is currently available for bulk carriers and oil tankers applying the Common Structural Rules for Bulk Carriers and Oil Tankers (CSR BC & OT) and will be expanded to more ship types and structures in the future.

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