
1. Please be informed that the amendments have been made to reflect IACS Resolutions, IMO Circulars and Requests for Establishment/Revision of Classification Technical Rules, and you are kindly requested to apply the amendments to the relevant works according to effective date.
2. Furthermore, please be informed that the amendments will be included in 2026 edition on Classification Technical Rules which will be published in the first half of 2026.
Classification Technical Rules | Effective Date | Main Amendments |
Rules for the Classification of Steel Ships Pt 5 | 1st January 2026 (Date of contract for ship construction) | IACS UR M46(Rev.4) IACS UR M52(Rev.3) |
1st January 2026 | IACS UR M10(Rev.5) | |
Guidance Relating to the Rules for the Classification of Steel Ships Pt 5 | 1st January 2026 (Date of contract for ship construction) | IACS UR M52(Rev.3) |
1st January 2026 (Date of contract for ship construction or application for testing/certification is carried out) | IACS UR M10(Rev.5) | |
Rules for the Classification of | 1st January 2026 (Date of contract for ship construction) | IACS UI SC305(New) |
Guidance Relating to the Rules for the Classification of Steel Ships Pt 6 | 1st January 2026 (Date of contract for ship construction) | IACS UI SC11(Rev.2) |
Guidance Relating to the Rules for the Classification of Steel Ships Pt 7 | 1st January 2026 (Date of contract for ship construction) | MSC.1/Circ.1683 |
Guidance Relating to the Rules for the Classification of Steel Ships Pt 8 | 1st January 2026 (Date of contract for ship construction) | MSC.1/Circ.1683 |
Rules for Ships Using Lowflashpoint Fuels | Rules for Ships Using Lowflashpoint Fuels | Resolution.MSC.551(108) |
Guidance for Prevention | 1st January 2026 (Date of contract or ship construction) | IACS UR M86(New) |
Guidance for Approval of anufacturing Process and ype Approval, etc. | 1st January 2026 (Date of contract or ship construction) | IACS UR M10(Rev.5) |
Guidance for Cyber Resilience of Ships and Systems | 1st January 2026 (Date of contract or ship construction) | New notation development and requirement revision |