DNV GL is one of the members of the International Association of Classification Societies (IACS). IACS is an interest organisation that is dedicated to safe ships and clean seas. IACS contributes to maritime safety and regulation through technical support, compliance verification and development and interpretation of technical standards.

The main output of the collaboration in IACS is the Unified Requirements (URs) and Common Structural Rules (CSR) for Oil Tankers and Bulk Carriers. In addition, IACS develops Unified Interpretations (UIs) of international conventions and codes.

IACS has consultative status in the International Maritime Organization (IMO) and provides technical advice to the Organisation.

For more information about IACS, see the IACS website, where all IACS Resolutions can be found. The IACS website also contains Questions, Answers and Common Interpretations of CSR.

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