The International Association of Classification Societies (IACS) is an international association of classification societies that aims to develop
standards and regulations regarding the safety of shipping. The association is headquartered in London, England.
The association was established in 1968. Initially, it included six societies. The Association brings together major national classification societies in order to develop cooperation between them in the field of technical supervision of ships to ensure the safety of navigation.
The activity of IACS is aimed at unifying the national rules for the classification, measurement, construction, operation and repair of ships used in shipbuilding materials, supplying ships with technical equipment (rescue, fire fighting, etc.).
The Association is the chief adviser to the International Maritime Organization (IMO) on technical issues.
More than 90% of the tonnage of the global merchant fleet is in the class of IACS member societies.