Classification Technical Rules

Effective Date

Main Amendments

Rules/Guidance for the Classification of Steel Ships, Pt 1

(Classification and Surveys)

On or after 1st Jan. 2026

(Date of which the application for survey is submitted)

1) IACS PR42(Rev.1 Nov. 2024) reflected etc.

 : The term related to QSCS amended for clarity.

2) IACS PR1A(Rev.10 Oct. 2024) reflected: Regarding TOC (Transfer of Class), additional plans/documents required for Passenger Ships have been newly added.

Rules/Guidance for the Classification of Steel Ships, Pt 8

(Fire protection and Fire Extinction)

On or after 1st Jan. 2026

(Date of which the application for survey is submitted)

1) Res.MSC.550(108) reflected etc.

 : Introduction of New Fire Safety Requirements for Vehicles, Special Category Spaces, Open/Closed Ro-Ro Spaces, and Weather Decks Intended for the Carriage of Motor Vehicles.

Rules for the Classification of Ships Using LFF

On or after 1st Jan. 2026

(Date of which contract of construction is assigned)

1) Res.MSC.550(108) reflected etc.

 : Revision of wording for clarification of requirements, etc.

Guidance for Approval of

Service Suppliers

On or after 1st Jan. 2026

(Date of which the application for survey is submitted)

1) IACS UR Z17(Rev.19 Oct. & Rev.20 Nov 2024) reflected: The term related to QSCS amended for clarity etc.

2) Details related to “Practical Demonstration” deleted: In case of the deleted sentences, they are not included in IACS UR Z17.