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How to supply goods and services to the UK Hydrographic Office.
The UKHO's Annual Report and Accounts for 2024 to 2025 is available to view and download
The UK Hydrographic Office (UKHO) is a world-leading centre for hydrography, delivering data and expertise to support safe, secure and thriving oceans.
The systematic survey of the UK’s coastal waters
UKHO Tidal Prediction Service Sample Formats
The UK Hydrographic Office (UKHO) is working with government partners to improve the UK’s resilience in satellite-based Positioning, Navigation and Timing (PNT).
Record copies of published Admiralty charts produced since 1800 arranged by chart number
The Seabed Mapping App is now available on the ADMIRALTY Marine Data Portal
First published during the 2019 to 2022 Johnson Conservative government
The UKHO recognises the impact seabed mapping has on enabling ocean action on World Hydrography Day and at the United Nations Ocean Conference in Nice in June.
Timetable for withdrawal of Standard Nautical Charts and Thematic Charts to be extended beyond 2026 in response to user feedback
First published during the 2022 to 2024 Sunak Conservative government
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