NEW - Paid ADMIRALTY Apps and Services
Offshore Infrastructure - An accurate and trustworthy database of over 7,500 surface and subsurface offshore energy installations and infrastructure in UK waters, including oil and gas platforms, wind turbines, well heads, pipelines and respective safety zones.
Vertical Offshore Reference Frame (VORF) - A faster, more accurate, more cost-effective method to help users convert data between vertical datums for surveys, planning and modelling in UK coastal and offshore zones.
Wrecks and Obstructions - An extensive range of information on over 24,000 wrecks and undefined obstructions in UK waters, from the UK government’s hydrographic and marine geospatial experts.
Seabed Composition - A government-owned database containing almost 50,000 grab samples in UK waters, helping professional marine planners to understand the make-up of the seabed.
HMNAO Astronomical and Calendar Information - The UK government authority on astronomical events like phases of the moon, seasons, equinoxes, and calendar events like religious and bank holidays for publishers of diaries and calendars.


New data sets include offshore infrastructure and VORF
ADMIRALTY Data sets
Bathymetry - Bathymetric surveys from various sources including over 4,000 bathymetry surfaces from 1970 to present day. The bathymetry data is updated every three months and a large number have been funded by the Maritime and Coastguard Agency (MCA), an executive agency sponsored by the Department for Transport, under the Civil Hydrography Programme.
Maritime Limits – Download maritime limits and boundaries as data sets or illustrations for the UK EEZ, UK Crown Dependencies and UK Overseas Territories.
Ships’ Routeing - Ships’ Routeing Measures as approved by the International Maritime Organization (IMO), and/or the Maritime and Coastguard Agency (MCA) (as National Competent Authority).
Wrecks – Over 8,000 live and charted wrecks around the UK as maintained by the UKHO's Marine Geospatial Data Management team.
UK Satellite Derived Coastline Data Set - Created using open source satellite data and custom automated computer vision algorithms developed by the UKHO.
You can access available bathymetry and contour data within the UK EEZ
ADMIRALTY Apps and Services
Contour App - View contours and dredged areas derived from Electronic Navigation Charts within the UK EEZ in a GIS web app.
PEXA Limits App - View authoritative Practice and Exercise Area (PEXA) Limits within the UK EEZ in a GIS web app.
Maritime Limits App - View authoritative Maritime Limits such as Port Limits and Marine Protected Areas within the UK EEZ in a GIS web app.
Maritime Activity App - View maritime activity such as Aquaculture sites, Ships' Routeing Measures, Spoil Grounds and Marine Protected Areas within the UK EEZ in a GIS web app.
Tidal Data Services - Discover flexible tidal information services from the UK's largest authoritative network of tidal stations.