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Trusted marine geospatial data
Our teams gather, process, verify and share data from seabed to surface to inform a wide range of decision making. Learn more about the data, expertise and partnerships that underpin our work.
Shaping the future of navigation
S-100 is a new data framework that will underpin the next generation of navigation technologies. Find out how S-100 will impact your operations and how the UKHO is testing, trialling and supporting the industry through this transition.
Safety warnings and notices
Access the latest Admiralty Notices to Mariners and critical maritime safety information, including NAVAREA warnings from the UKHO.
Discover our world leading navigational products
Supporting safe navigation is at the heart of what we do. The UKHO provides trusted navigational information through its portfolio of Admiralty products, sold worldwide through our network of distributors.
Admiralty Digital Sailing Directions
Admiralty Digital Sailing Directions (ADSD) transforms trusted Admiralty Sailing Directions into a geo-referenced digital format with powerful search, filtering and bookmarking capabilities built in.
Providing quicker, easier access to navigational information, ADSD is designed to support smooth passage planning and situational awareness.
Admiralty Vector Chart Service
Admiralty Vector Chart Service (AVCS) is the world’s leading official digital maritime chart service, with around 23,000 official Electronic Navigational Charts (ENCs) to help bridge crews navigate safely and efficiently whilst meeting flag and port State requirements.
Explore the services and access the latest updates and support.
Admiralty Digital Publications
Admiralty Digital Publications (ADP) are designed to bring simplicity, flexibility and speed to passage planning and navigation.
Discover the full suite of ADP applications, including:
- Admiralty TotalTide (ATT)
- Admiralty Digital Radio Signals (ADRS)
- Admiralty Digital List of Lights (ADLL)
Admiralty e-Nautical Publications
Admiralty e-Nautical Publications (AENPs) are updatable, electronic versions of our range of official nautical publications. Easy to use and update, they bring improved efficiency, accuracy and access to information bridge officers need.
The next generation of Sailing Directions has arrived
Admiralty Digital Sailing Directions (ADSD) transform the trusted Admiralty Sailing Directions data into a dynamic digital format to streamline passage planning from coastal transit to port entry.
Discover the latest news and insights
Read the latest insights from the UKHO, including news and updates on our Admiralty products.
