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Counterfeit products have not been issued officially by or on the authority of a Government, authorised Hydrographic Office or other relevant Government institution and do not satisfy the carriage requirements of the International Convention on the Safety of Life at Sea (see ​Chapter V, Regulations 2.2 and 19.2.1.4 of the Convention). Furthermore, they have not undergone the rigorous checking procedures which take place for official versions; posing a significant safety risk to vessels, crews and cargo.

Our short counterfeit guide can help you to identify genuine ADMIRALTY products and reduce the risk of counterfeits being used for navigation.​

Download the ADMIRALTY Guide to Identifying Counterfeit ADMIRALTY Products​​

If you do find a counterfeit product, please inform the UKHO by contacting our customer services team at customerservices@ukho.gov.uk. Details of where and when the product was purchased, photographs and ideally the product itself should be provided to help us identify the source.​

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