​​​​​​​​​​​The United Kingdom Hydrographic Office (UKHO) provides hydrographic and geospatial data to mariners and maritime organisations across the world.

Our market-leading portfolio of ADMIRALTY Maritime Data Solutions is found on over 90% of the world's ships trading internationally and provides the widest official coverage of the world's busiest international shipping routes and ports. Depended upon by mariners for over 200 years, the range includes over 15,750 Electronic Navigational Charts (ENCs), 3,500 Standard Nautical Charts (SNCs) and over 200 paper and digital publications.