Green Book

The IACS Green Book contains all currently in force IACS Resolutions and Recommendations. The Green Book is updated when an IACS new or revised Resolution or Recommendation is uploaded on the IACS website.

The Green Book will enable end users to download it just before going to a working location where there may not be access to internet available. The Blue Book containing all historical publications will be published annually.

Note: Green Book is not working as intended and is currently under maintenance. We seek your understanding in this regard.


The content in this Website and the material available on it, including (without limitation) the IACS Blue Book, (together, the "Website Materials") are offered as a helpful resource for you and your company and is designed to help you obtain information and guidance. It should be noted that, for classification purposes, the Rules of the individual members apply, not the IACS resolutions contained in either the "Blue Book" and "Green Book".

While every effort has been made to ensure the accuracy of information presented, the International Association of Classification Societies, its members and International Association of Classification Societies Limited (together, "IACS") make no representations or warranties as to the completeness or accuracy of information in the Website Materials. Furthermore IACS hereby disclaims all responsibility for and accepts no liability for any errors or losses caused by any incompleteness or inaccuracies of such information or the consequences of any person acting or refraining from acting or otherwise relying on such information.

IACS is the owner or licensee of the copyright, database rights and all other intellectual property rights in the Website Materials. Such material is protected by laws and treaties throughout the world. The trade marks and logos ("Marks") displayed on the Website Materials are the property of or licensed to IACS. You are not permitted to use these Marks without the prior written consent of IACS.

You may download and use the Website Materials only in accordance with the Terms and Conditions.



Forgotten Password

Please enter your email address here and you'll receive an email with instructions on how to reset your password.