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Nippon Kaiji Kyokai (ClassNK)

Address: 4-7 Kioi-cho, Chiyoda-ku, Tokyo 102-8567
Country: Japan

Telephone Number: +81 3 5226 2011

Contact: Dr M. Abdul Rahim

Categories: Design, Construction, Equipment, Surveying, Safety & Risk Assessment

Description: Nippon Kaiji Kyokai, known as ClassNK or NK is a ship classification society. The principal work of ClassNK is to undertake surveys, to ensure that the rules which it has developed are applied to both newbuildings and to existing ships to ensure the safety of the vessels. The rules cover not only hull structures, but also safety equipment, cargo handling gear, engines, machinery, and electrical and electronic systems among others. As of the end of October 2015, the Society had 9,173 ships totalling over 240 million GT under class. This figure represents approximately 20 percent of the world merchant fleet currently under class. Although based in Japan, where it has 20 service sites, ClassNK has worldwide representation through an extensive global network of 129 exclusive surveyor service sites. ClassNK's surveyors work in shipbuilding and repair yards and at ports across the world, wherever they may be called upon to examine the condition of a ship, so that all of the Society's services are available worldwide. On 15 November 1999, ClassNK celebrated the centenary of its foundation. ClassNK is one of the seven founding members of the International Association of Classification Societies, otherwise known as IACS. ClassNK is active in the various Working Parties and subcommittees of the organization, and makes major contributions to the realization of the goals of the Association. ClassNK for example played a leading role in the development of the IACS Common Structural Rules, especially for bulk carriers, and is actively supporting the common rule harmonization process.


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