ClassNK issues General Design Approval (GDA) for Subsea Cable-Laying Vessel developed by NYK Line

TOKYO: ClassNK has issued a General Design Approval (GDA) for Subsea Cable-Laying Vessel developed by Nippon Yusen Kabushiki Kaisha (NYK Line). This approval verifies the vessel’s compliance with relevant rules at the detailed design level^*1.

The expansion of wind power generation utilizing offshore areas and surrounding islands with favorable wind conditions and relatively limited site constraints is expected as part of efforts to increase the share of renewable energy. However, regions suitable for wind power generation are often located far from major electricity demand centers, making the development and reinforcement of power transmission infrastructure a key challenge in delivering generated electricity to demand areas.

In response to this challenge, long-distance subsea DC transmission using cable jointing and burial vessels is regarded as an effective solution for achieving efficient power transmission.

ClassNK carried out a design review of the vessel based on part O of its `Rules and Guidance for the Survey and Construction of Steel Ships,’ as well as other relevant rules, and issued a GDA after confirming compliance with the prescribed requirements.

ClassNK will continue to contribute to the widespread adoption of offshore wind power generation by supporting new technology development and social implementation, including through safety assessments.

*1 At an early stage of design, or prior to the determination of a specific vessel for implementation, the design is reviewed based on existing regulations such as international conventions and ship classification rules, and a certificate is issued as proof of compliance with the relevant requirements.

This process helps prevent regulatory revisions or rework in later development stages and contributes to reducing the time required for examination upon class registration. It can also serve as a technical basis for externally demonstrating the soundness of the design.