ClassNK Grants Approval in Principle to OceanWings’ RF and RT Wingsail Designs
Expanded approval confirms the scalability of OceanWings technology across a broad range of vessel sizes and shipping segments. OceanWings has received an Approval in Principle (AiP) from ClassNK covering its Rigid Fixed (RF) and Rigid Tiltable (RT) wingsails. The approval was presented during an official ceremony at SMM in Hamburg on 2nd September 2026. Building ...
OceanWings has received an Approval in Principle (AiP) from ClassNK for its Rigid Fixed (RF) and Rigid Tiltable (RT) wingsail designs. This expanded approval confirms the scalability of OceanWings technology across a broader range of vessel sizes and shipping segments. The AI(P) was presented during a ceremony at SMM in Hamburg on September 2nd, 2026.
Building upon the initial AiP from 2025, which covered a 363m² wingsail with a 38-meter span, this extension now validates the core design principles of both configurations for various wing sail sizes. OceanWings currently offers wingsails up to 407m² with a 42-meter span, and the technology is now approved to expand further for larger ship segments and different operational profiles.
ClassNK President & CEO Hayato Suga highlighted that the expanded AiP provides shipowners, shipyards, and naval architects with greater confidence in selecting the most suitable OceanWings size and configuration for their vessels. This milestone supports the integration of wind propulsion into newbuild programs and retrofit projects, advancing the maritime industry's shift towards more sustainable shipping.
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