DNV, Damen and Napa unveil 3D-model design framework

Image of the model of CSOV 9020 taken from Napa Designer (Source: Napa)
DNV, Damen, and Napa have developed a new Open Class 3D Exchange (OCX) standard to streamline class involvement in the early stages of a design project. In its first application, Damen Engineering decided to involve DNV classification experts in the first design review of a Commissioning Service Operation Vessel – CSOV 9020.
The walk-to-work CSOV design was developed by Damen engineers using Napa’s 3D design tools. These enable the export of 3D models in OCX format. This, in turn, made it possible for Damen and DNV to work on the same 3D model simultaneously, thereby saving both time and effort required for agreeing and preparing documentation.
The OCX standard for 3D model-based approval is designed to enable the straightforward exchange of geometry and metadata between design and class software platforms. The OCX 3D model can also replace traditional 2D structure drawings for class requirements, saving time for shipbuilders and enabling class to respond to designers more quickly.
The OCX standard is the result of a joint industry project headed by DNV. The standard is now jointly owned and managed by the OCX Consortium, established in 2021, which consists of more than 30 industry organisations including all major classification societies, leading computer-aided-design providers, and several designers and shipyards.
Ivar Håberg, director of Approval at DNV, pointed out: "The earlier class starts the design approval process, the easier it is to find good rule-compliant design solutions in cooperation with the yards. By using the OCX file format to exchange information on 3D design models, DNV can more efficiently interact and cooperate with the designers and yards already in the early design development phase."
Damen Engineering managing director, Katarzyna Romantowska-Jaskólska, commented: "Environmental, safety, regulatory, and other external pressures, combined with the competitive need to create ever-better designs, mean doing things the way we always did them is no longer sufficient. The OCX format allows us to take a new approach that is beneficial to everyone involved in the development of a vessel design, and the project execution process. In collaboration with DNV and Napa, we arrived at a solution that connects disciplines and facilitates quick decision-making while reducing risks in the early stages of a design."
Executive vice president for Design Solutions at Napa, Mikko Forss, added: "At NAPA, streamlining the hull structure approval process through efficient collaboration and swift feedback loops among stakeholders is one of our top priorities. As a result of several joint industry development projects, NAPA’s 3D design solutions can support efficient information exchange between ship designers and classification societies, enabling quicker and more accurate approvals. Our support for the OCX format is a key part of this effort, as it enables the standardised exchange of 3D model data and reduces the time and effort required for efficient communication."