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Supporting safe, secure and thriving oceans
The UK Hydrographic Office (UKHO) delivers quality, innovative maritime navigation solutions, trusted by customers and partners worldwide, through our ADMIRALTY portfolio.
For over 225 years, we have been delivering accurate and timely navigational information to support decision making for safe, compliant and efficient maritime navigation.
Discover our ADMIRALTY portfolio
Click below to find out more about our world-leading range of ADMIRALTY products and services.
ADMIRALTY Vector Chart Service
The ADMIRALTY Vector Chart Service (AVCS) is the world’s leading official digital maritime chart service, with around 18,000 official Electronic Navigational Charts (ENCs) to help bridge crews navigate safely and efficiently whilst meeting flag and port State requirements.
ADMIRALTY Digital Publications
ADMIRALTY Digital Publications (ADP) are computer-based applications of the UKHO’s market-leading paper-based nautical reference guides, including:
• ADMIRALTY TotalTide - Accurate tidal predictions for 7,000 ports and 3,000 tidal streams worldwide.
• ADMIRALTY Digital List of Lights - Official light and fog signal information for 90,000 light structures.
• ADMIRALTY Digital Radio Signals - Official maritime radio communications information worldwide.
ADMIRALTY e-Nautical Publications
ADMIRALTY e-Nautical Publications (AENPs) are official ADMIRALTY Nautical Publications available as e-books, bringing improved efficiency, accuracy and access to information bridge officers need.
90 official ADMIRALTY Nautical Publications are available including Ocean Passages for the World, the Nautical Almanac, the Mariner’s Handbook and many more.
ADMIRALTY Vector Chart Service Online
ADMIRALTY Vector Chart Service (AVCS) Online is a shore-based version of the world's leading maritime chart service that is used on board most ships trading internationally. With access to images of over 18,000 ENCs available at all scales, AVCS Online supports shore-based maritime decision making such as vessel tracking, voyage planning, and accident and emergency incidents.