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From ship to shore
Supporting safe navigation is at the heart of what we do. We deliver quality, innovative maritime navigation solutions, trusted by customers and partners worldwide.
ADMIRALTY Vector Chart Service
Explore our world-leading ENC service and access the latest updates and support you need.
ADMIRALTY e-Nautical Publications
We offer updatable, electronic versions of our official ADMIRALTY Nautical Publications.
Find out more about our world-leading publications as e-books.
ADMIRALTY Digital Publications
Bringing simplicity, flexibility and speed to passage planning and navigation. Discover our range of digital publications.
Safety warnings and notices
Get the latest safety information and notices from UKHO.
Supporting you now and in the future
As the maritime industry evolves, we know seafarers’ needs are evolving too.
With more innovative solutions and more granular data than ever, we’re ensuring our ADMIRALTY products and services support navigation today and for generations to come.
Find out about the UKHO's involvement in advances across the maritime industry
Explore our case studies
Find out more about the work we do at the UKHO with real-world examples of how we're supporting safe, secure and thriving oceans.
Future S-100 standards
Developed by the International Hydrographic Organization (IHO), S-100 will be the new data standard underpinning the next generation of navigation technology and data exchange in the maritime industry. Find out how we’re supporting the development, testing and use of future S-100 products and services.
Discover our data
We hold a wide range of data gathered from a range of expert providers. This data is sourced by working closely with government organisations, hydrographic offices and other partners around the world.
Marine data sets
We hold a wealth of marine geospatial data from seabed to surface, offshore and beyond. Through the ADMIRALTY Marine Data Portal, users can access extensive data on bathymetry, wrecks and obstructions, ships' routeing, maritime limits and offshore infrastructure.
Seabed mapping
We offer a range of seabed mapping data and services - from the depth of the seafloor to its composition.
Tidal data
Our UK tidal database contains height data from over 600 tidal gauges around the UK, making up the UK's largest network of tidal stations. The database also includes over 40 stations in the Environment Agency's UK National Tidal Network and stations from port authorities at many of the UK's primary and secondary ports.
Astronomical data
His Majesty's Nautical Almanac Office (HMNAO) is a small team within the UKHO which provide astronomical and celestial information through specialist products and services.
S-100 trial data
With more data being collected and shared across the maritime and geospatial industries than ever before, having a common set of standards is key to making this data accessible, compatible and valuable to those using it both now and in the future.
In support of the development, testing and use of future S-100 products and services, we’ve created a range of S-100 trial data sets that are free to download.