Founded in 1899, ClassNK is a ship classification society dedicated to safer and cleaner seas.

ClassNK provides diverse technical services including surveys and classifications of ships and marine structures based on its own rules, statutory certifications on behalf of more than 100 flag states, management system certifications in line with ISO and other international standards. On top of these services, ClassNK has committed to provide the industry with its full support to pave the way for digitalization and decarbonization challenges.

ClassNK is a global organization providing the highest quality services and supporting its clients 24/7 through a network of competent and well-experienced professionals at 130 exclusive surveyor offices worldwide. With roughly 270 million gross tons or some 20% of the world’s merchant fleet on the register, ClassNK is one of the world’s largest classification societies in terms of gross tonnage.