NYK has launched a new crew transfer vessel project using 3D technology as the core platform across both design and construction, in collaboration with Kosaba Shipbuilding Co., Ltd. and Smert Design Co., Ltd.
The project replaces a conventional 2D workflow with a full 3D model applied from the initial design stage through construction. The approach reflects the increasingly advanced and complex performance requirements facing crew transfer vessels serving offshore wind farms, where safety, operability, and maintenance and inspection efficiency are critical.
The 3D model was used to review the hull structure, equipment arrangement, and ease of operation and maintenance. This enabled the project team to identify potential interference between structural members and equipment at an early stage, improving layout accuracy and supporting design front loading. As a result, the process reduced design changes and rework during construction.
The same 3D model was then used during the building stage. In addition, 3D scanning of the actual structure was carried out during construction to visualize deviations from the design data. This made it possible to identify thermal deformation and assembly tolerances specific to aluminum catamarans, contributing to quality verification and improvement.
The project also produced 3D digital finished drawings that centrally manage specifications, drawings, construction comments, and measurement data linked to the model. By adopting a 3DA, or 3D annotated, model, the project moved beyond conventional geometric representation. Each component was linked with technical data and records, including specifications, construction notes, and measurement data.
Using the 3D model as an entry point, related equipment information and documents can be accessed more intuitively. This is expected to improve the efficiency of vessel management work, including inspection and maintenance, after the vessel enters service.
The knowledge gained from building the vessel is expected to be applied to future CTVs, other vessel types, operational and maintenance phases, and academic research. The vessel has an overall length of about 28 m, a breadth of about 9 m, and a gross tonnage of about 145 tonnes. The vessel is being built at Kosaba Shipbuilding Co., Ltd. in Kamaishi City, Iwate Prefecture. Through the application of 3D technology to ship design and construction, the NYK Group aims to establish next-generation shipbuilding processes and strengthen its technological competitiveness in offshore wind power and other businesses.
