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Delivering navigation and marine geospatial information to defence

We are the Defence Maritime Geospatial Intelligence Centre, supporting the safety and security of our waters is a vital part of what we do.

Our role in Defence

Safer navigation and enhanced situational awareness

The Royal Navy and all UK defence vessels, from ships to submarines, rely on our products and services for safe navigation. Fundamental to the UK’s Integrated Review, we work closely with maritime forces and global allies to protect our home waters and national infrastructure, international trade routes and the world’s oceans.

Our wide-reaching expertise and close collaboration help ensure the most effective operations for UK defence and our national security. 

Tactical operations and planning

Our specialist teams help provide the best possible view of the marine environment to support tactical operations and planning – from subsea navigation to littoral manoeuvre. This includes bespoke solutions that deliver hydrographic information, ocean environment data and remote sensing to aid environmental intelligence and tactical advantage.

Additional Military Layers is a range of digital geospatial products designed to enhance situational awareness in the marine environment.

Additional Military Layers (AML)

Defence products and services


From existing data holdings we create navigation and enhanced marine environment products, for both dived and surface vessels and amphibious craft and maritime air platforms.

ADMIRALTY Maritime Security Charts

MSCs contain security-related information to assist bridge teams in planning safe passages through areas of increased risk. All information has been gathered by the UKHO working with NATO, other government agencies and international partners, ensuring that each chart has the most accurate, up-to-date and verified information available.​​

Find security related information for mariners