ClassNK AiP FOR OCEANWINGS WAPS

Mar 28, 2025 | Ship classification news

ClassNK has issued an approval in principle (AiP) for a rigid windsail type Wind-Assisted Propulsion System (WAPS) developed by OceanWings.

The certification confirms its feasibility from regulatory and safety perspectives. The implementation of WAPS is advancing as a solution for responding to environmental regulations and reducing fuel expenses. When such systems are installed on ships, they are expected to be effective in reducing CO2 emissions through the use of wind power. However, depending on the scale and specifications, risks can arise for the ship’s structure, onboard crew, and the surrounding environment.

ClassNK reviewed the design concept of the system based on its Guidelines for Wind-Assisted Propulsion Systems for Ships (Edition 2.1). Upon confirming its conformity to prescribed requirements for structural design, driving and control systems etc., ClassNK issued the AiP.

Image: AiP handover ceremony (source: ClassNK/JLA)

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