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Working together to solve challenges in maritime business.

Contributing to society as a whole through expansion of certification field.

Services for Wind Turbine

Press Release

02 Jul: ClassNK grants Innovation Endorsement for Products & Solutions to “CMAXS LC-A” developed by MITSUI E&S Co., Ltd. and Mitsui E&S DU Co., Ltd.

30 Jun: ClassNK issues World's First Approval in Principle (AiP) for LCO2/Methanol Carrier developed by Mitsubishi Shipbuilding and MOL - Contributing to establishment of synthetic methanol supply chain for carbon-neutral future -

30 Jun: Evaluation and financing is provided to Kumiai Navigation (Pte) Ltd based on "Zero-Emission Accelerating Ship Finance" -Supporting efforts to realize low-/zero-emission ships-

Technical News

02 Jul: Released TEC-1353 "Amendment of IMO's Guidelines for the development of the Inventory of Hazardous Materials regarding Ship Recycling Convention (RESOLUTION MEPC.405(83))"

01 Jul: Release of the "NOTATION HANDBOOK (2025-3 Edition)"

30 Jun: Released TEC-1352 "Compliance with Hong Kong Convention (Ship Recycling Convention) for Panamanian-flagged ships"

News & Events

26 Jun: 重要通知：敬請小心冒充本協會發出的可疑電子郵件或發票

16 Jun: Email address pre-registration for the new log-in system has started

23 May: Information about changing log-in for ClassNK Services

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