Nippon Kaiji Kyokai

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Nippon Kaiji Kyokai (ClassNK)

Native name	日本海事協会
Company type	Non profitable organization
Industry	Classification society
Founded	1899
Headquarters	Chiyoda, Tokyo, Japan
Website	Nippon Kaiji Kyokai

Nippon Kaiji Kyokai (一般財団法人日本海事協会, Ippan-zaidan-hōjin Nippon Kaiji Kyōkai), also known by it s brand name ClassNK, is a non-profit, non-governmental organization ship classification society. ClassNK is one of the seven founding members of the International Association of Classification Societies, otherwise known as IACS.